Comments by Albert Holguin

Albert Holguin 20-Apr-17 14:29pm View

When you try this again... from the directory you're in do the following:
(0) list the current directory
(1) run pwd to see your present working directory
(2) list the /bin directory (to make sure you have bash there)
(3) list the environment variables (env)

Albert Holguin 14-Mar-17 16:19pm View

Except there's a major negative in pulling in IO from a user as integers for the purpose of doing math... you'll immediately lose precision from a floating point input. Your results also don't always match the input types, integer division often results in non-integer value (i.e 3/2!=1, 3/2==1.5).

Albert Holguin 13-Mar-17 10:21am View

FYI... this is considered bad for security, hence the feature being disabled by default.

Albert Holguin 1-Mar-17 17:27pm View

+5, I'd add a couple of things... if you're already in python and have a prompt, you can launch via execfile() or exec() (depending on version)... and you can also run the debugger on a python script from the terminal

Albert Holguin 1-Mar-17 17:11pm View

Appears to be an "embedded" Python issue (or nuance)...

Albert Holguin 23-Feb-17 12:01pm View

That's definitely not C. If you need help with whatever language this is, tag appropriately. If you just want help with understanding concurrency in general, don't use a language specific tag.

Albert Holguin 26-Jan-17 10:02am View

You probably should care about namespace clashes... it's a reason not to rely on macros so heavily.

Albert Holguin 24-Jan-17 21:49pm View

Haven't seen one... but I've moved over to the gcc toolset a bit ago.

Albert Holguin 24-Jan-17 16:06pm View

+5... but if OP is simply trying to find the state of a definition within a file, my solution is probably the simplest thing to do.

Albert Holguin 18-Jan-17 18:20pm View

With that many questions, I'm not so sure you'll get that many responses. Nobody wants to sit and answer all this. To get good responses, keep things concise and only offer relevant info.

Albert Holguin 18-Jan-17 18:06pm View

Are you asking a question or trying to interview us?

Albert Holguin 13-Jan-17 9:19am View

Virtual method would be the approach I'd use for this type of problem. +5 for list of approaches to solving the problem...

Albert Holguin 11-Jan-17 10:59am View

Yeah, it's actually a pretty good question. I'll upvote it as well (as well as your answer).

Albert Holguin 11-Jan-17 10:58am View

You know, C++ has pretty good/easy networking libraries as well. Heck, there are a handful of libraries that have interfaces/bindings for both C++ AND Python (i.e. ZeroMQ[^]).

Albert Holguin 9-Jan-17 14:32pm View

are you running make on an APK file?

Albert Holguin 2-Jan-17 17:04pm View

Yeah, OP had conflicting information, I *THINK* he meant foo should be equal to bar on the first iteration only.

Albert Holguin 2-Jan-17 16:02pm View

This would compile...except that this wouldn't give you the expected results... because the value of foo would get initialized to c every time f() was called and not only the first time.

Albert Holguin 22-Dec-16 14:33pm View

Have you tried flushing? Believe there's also an "auto_flush" variable you can enable so that streams are flushed every time you pass something... fyi, if logging a lot, this feature can actually slow things down, hence it being disabled by default.

Albert Holguin 18-Dec-16 22:29pm View

Didn't look at the dates... that shows up on my feed as an unanswered question given my filters... what can I say? ::shrug::

Albert Holguin 13-Nov-16 21:38pm View

well, first off... I asked if you were breaking on purpose there... are you? do you understand what that does?

Albert Holguin 10-Nov-16 13:06pm View

I've been in Linux land for too long perhaps

Albert Holguin 10-Nov-16 9:58am View

lib libraries are the static versions, are you trying to do static linking? If not, or you're not sure, you probably should be doing dynamic linking (i.e. dll libraries).

Albert Holguin 9-Nov-16 13:15pm View

-1 to -49 do not return 0 if you use an unsigned int, and yes, 100-149 are also valid but I thought that was acceptable given the OP's requirements.

Albert Holguin 9-Nov-16 11:54am View

Well, this does account for negatives as well (you'll get "not valid" for negatives since the result val will be huge). It does also allow values up to 149 though, which I though would be proper given that "extra credit" can usually boost a grade slightly over a 100.

Albert Holguin 9-Nov-16 10:44am View

Although this meets the requirements of the OP, it sure is ugly.... NEVER use this in actual production code.

Albert Holguin 8-Nov-16 13:15pm View

You're doing so much pointer arithmetic that you're likely going out of bounds. Use a debugger or put some print statements to figure out where you're going out of bounds.

Albert Holguin 8-Nov-16 11:24am View

There are a lot of reasons to use mixed programming, so definitely useful, but be sure to have weighed your options for using it before choosing to do so. A popular mix right now is Python/C++ (that I use), that's because C++ can be fast but it must be compiled, Python doesn't have to be compiled so it can be versatile. By combining the two, you have fast execution times, but still get the run-time versatility of Python.

Albert Holguin 7-Nov-16 11:25am View

Your "fix" broke the expected main prototype. Your initial problem was signaling an error you attempted to fix incorrectly.

Albert Holguin 23-May-16 17:47pm View

There are a ton of resources online that give examples on this topic. Please try another one if one doesn't compile off the back.

Albert Holguin 20-May-16 15:00pm View

It depends on install paths... if they're not in default locations such as /usr or /usr/local then you do have to source that every time (or do something to have that done automatically).

Albert Holguin 12-Apr-16 22:34pm View

Better than nothing... :)

Albert Holguin 10-Apr-16 20:59pm View

If you suspect any networking problems, try using Wireshark to see the data being exchanged between the machines. That would also tell you if there are any firewalls blocking any paths. Aside from that, the application could be failing for any number of reasons. You can always try running it from a debugger, if it was built with debug symbols, it may give you some meaningful feedback, if it wasn't... at least it'll let you know what assembly it failed on (for example, some library that it's using or attempting to use).

Albert Holguin 8-Apr-16 19:44pm View

It's possible that it wasn't finding the Qt libraries in the expected location. You could have actually specified the location by either editing the makefile or by using a load library path (environment variable).

Albert Holguin 7-Mar-16 20:33pm View

I tried to detail the process out a little more since I work with Linux quite a bit...

Albert Holguin 18-Feb-16 23:48pm View

Well, you could do it for one byte but it would be a very simple program.. here it is:

Albert Holguin 18-Feb-16 23:31pm View

As a fellow C++ prog... I must agree... Powerful and as versatile as you make it to be!

Albert Holguin 12-Feb-16 15:55pm View

This is dangerous though... because scope plays an important part of this. Don't return by reference anything that's going to go out of scope as soon as the function is finished!

Albert Holguin 12-Feb-16 10:03am View

+5

Albert Holguin 12-Feb-16 10:00am View

Installing drivers through Wine on Linux won't buy you anything. Wine is a compatibility layer for regular user applicatons, not for drivers.

As to Linux support for touchscreens, you may be hard pressed to find anyone supporting it. Touchscreens haven't really been a big part of most desktop/server distros. Perhaps try looking at Android or other derivative distros, they should have better support for this type of application (although they're generally a pain to work with outside of the handheld environment). Good luck.

Albert Holguin 12-Feb-16 9:54am View

You should probably post this as a solution...

Albert Holguin 9-Feb-16 13:50pm View

+5, That ladies and gentlemen, is what we'd call horrible code in the business... don't be that guy. Just because you can do something doesn't mean you should.

Albert Holguin 29-Jan-16 15:22pm View

Splitting a file into anything smaller than the MTU size is a waste of time (assuming TCP)... default MTU size in Linux is 1500 bytes.

Albert Holguin 29-Jan-16 14:59pm View

The actual size of the array that you're using. If you're using a raw char array, you should know the size since you allocated it... if you're using a container (say vector, even though I don't think it's applicable to use a vector for this) then use whatever size() function the container has.

Albert Holguin 28-Jan-16 20:17pm View

FYI... sizeof() gives you the size of whatever you're passing to it, if you pass an char[] to it, it'll give you the size of the address, not the size of the buffer... looks like you're using it wrong... also, you shouldn't have to specify "this" all the time if you're already within the object, makes the code unnecessarily verbose... if you're making calls within a class, "this" is implied.

Albert Holguin 28-Jan-16 20:12pm View

curiosity is a great way to learn... keep it up

Albert Holguin 28-Jan-16 20:02pm View

Except you're completely bypassing iterators by loading data the way you're showing right? You're also bypassing any memory management. In your example, if the user didn't initialize the vector, you'd get a nice crash out of that. So you've given someone a false sense of security.

Albert Holguin 28-Jan-16 19:39pm View

+4.... this really doesn't buy you anything... for that matter, why a std::vector and not a std::array? the socket recvfrom() call isn't going to change size, no point in using a vector.

Albert Holguin 12-Jan-16 23:23pm View

...although the purpose of redefining new in debug mode is to prevent this type of crashing for debugging (detect overflows/ invalid memory access)... so I doubt that's the cause of a crash.

Albert Holguin 12-Jan-16 15:03pm View

Yep, I'll have to second CPallini... don't think that would crash as written in the post.

Albert Holguin 29-Dec-15 14:40pm View

Since the OP seems to be new to multithreading figured the extra info would help them.

Albert Holguin 29-Dec-15 10:55am View

+5... Also worth noting std::thread is relatively new and is basically a standardized version of what boost::thread was (C++ did not include multithreading until recently, meaning all systems implemented their own version). pthread is the POSIX standard but it's not natively supported by Windows.... Windows has its own WinAPI threading calls.

Albert Holguin 29-Dec-15 10:45am View

That just means that the main thread will be blocked but the Windows architecture will continue to work in the background (i.e. COM and messaging will not be blocked).

Albert Holguin 29-Dec-15 10:44am View

That's just it... you don't HAVE to "join", the main thread can do something else if you'd like.

Albert Holguin 11-Dec-15 12:47pm View

Sure, you can do this easily with C or C++ if you know enough about the Windows API (assuming you mean Windows). You just have to learn about Windows controls and messaging. The control IDs can be snooped using the Spy++ utility (although this should be considered a hack since the control IDs may change between software versions).

Albert Holguin 8-Dec-15 13:28pm View

If you just installed it, why not just re-install but use the desktop version instead?

Albert Holguin 4-Dec-15 9:17am View

If you have Wireshark, another thing to look for is retransmissions. They should be pretty easy to spot with Wireshark, they're colored with a different color than a regular packet transfer. If retransmissions are occurring for whatever reason you'll also see this type of lag.

Albert Holguin 4-Dec-15 8:38am View

I must have read your number wrong, I was thinking 1126... In that case, the MTU size should have been reached and the OS should have sent out a handful of packets. Try checking your MTU size anyway, its possible that it's set to a really large number which would cause this behavior.

Albert Holguin 3-Dec-15 22:39pm View

Not sure why libraries aren't an option for you... ??? ....there's an open source logger called log4cpp that's become pretty popular in Linux, but it's definitely cross-platform.

Albert Holguin 3-Dec-15 22:24pm View

Probably buffering due to default MTU size, that amount of data is actually less than the standard 1500 byte MTU size commonly used.

Albert Holguin 2-Dec-15 12:05pm View

That's why I didn't post a solution, because the obvious errors should result in the interpreter giving you an error message that should be self-explanatory, so didn't know what they meant with "make it work" or "it doesn't work".

As to /bin/sh that should be your default way of doing things unless you're using functions that are specific to one shell or another. Ubuntu does however still have /bin/bash, so that works just as well. Think they replaced bash with dash as the default because dash is supposed to be faster and they use a lot of shell scripts during the startup process.

Albert Holguin 2-Dec-15 10:56am View

...and I guess while we're at it... "#! /bin/bash" and "#! /bin/sh" are not two types of shells... actually bash is a type of shell while /bin/sh is usually a symbolic link to the system default shell (in modern Ubuntu, that's actually dash not bash... a change that was introduced back in ~2006).

Albert Holguin 2-Dec-15 10:51am View

Updated the vote... as to extensions with scripts, that's neither good practice or common, want an example? If you happen to have an Ubuntu installation somewhere, go to the /etc/network/if-up.d/ path... see a bunch of executables without extensions? yep, they're all bash scripts. This particular set of scripts are executed when the network manager does anything with any of the ethernet ports (they all do something relating to ethernet ports or associated services).

Albert Holguin 2-Dec-15 1:20am View

What's your problem specifically? ..I see a few small issues but I don't exactly feel like setting this up and running it since you're not really asking a complete question here.

Albert Holguin 2-Dec-15 1:18am View

technically speaking, the extension doesn't matter in Linux... your chmod command is out of order (filename last)... firefox is a command in this context, not a variable, this actually launches firefox if it's not running (ps command is dumping output to file, then he's attempting to check the file for an instance of firefox already running).

Albert Holguin 2-Dec-15 0:47am View

Yes, ifconfig would give you the addresses of the ethernet ports on the Linux device that you ran that on. It sort of sounds like OP is trying to figure out either 0. who the server is he's connected to OR 1. where he should be attempting to find his host machine. Maybe OP will clarify.

Albert Holguin 2-Dec-15 0:44am View

You question isn't very clear... try to clarify or re-phrase.

Albert Holguin 2-Dec-15 0:42am View

console? ...you mean terminal? ...and if so, you can't do that, each terminal (i.e. bash) instance is independent of the other...

Albert Holguin 18-Nov-15 10:47am View

Not until I had already written everything down... then I said, oh well... :-/

Albert Holguin 17-Nov-15 10:46am View

Regardless of how you dice it, you shouldn't have two interfaces on the same subnet address... which is what you have going here.

Albert Holguin 16-Nov-15 9:30am View

Pretty sure that's your problem...

Albert Holguin 20-Oct-15 17:23pm View

Your problem statement is not clear at all...

Albert Holguin 19-Oct-15 15:01pm View

Happy Monday :)

Albert Holguin 19-Oct-15 14:54pm View

the part after ":" is not anything that has to do with authentication, it's part of the path... only thing he exposed was a username, which may or may not be useful depending on ssh security settings.

Albert Holguin 19-Oct-15 14:45pm View

Pretty much it.... failed to provide a path to your library... +5

Albert Holguin 6-Oct-15 10:54am View

+5

Albert Holguin 6-Oct-15 10:53am View

when it comes to doing something trivial, common, but tedious.... use a library

Albert Holguin 14-Aug-15 11:37am View

Embedding a scripting language is the way I would go about this too... not sure I'd use Lua though as there are a variety of heavy lifting mathematically intensive scripting engine options (Octave/Matlab) that would likely support math intensive scripting very well. Of course, I don't have much experience with Lua so that probably makes me a little biased against it. .....+5 for the scripting suggestion though...

Albert Holguin 30-Jul-15 15:59pm View

I'll have to agree with ^Richard.. this is a massive topic. I would assume that it wouldn't be terribly hard to do something like this in terms of complexity but in terms of how much work you'd need to do, it would probably be a pretty big undertaking for one person.

Albert Holguin 30-Jul-15 12:50pm View

thanks for the upvote

Albert Holguin 27-Jul-15 10:26am View

Didn't I already answer this? You're specifying library_dirs but you're not telling the linker what libraries you need. Read the documentation.

Albert Holguin 24-Jul-15 10:11am View

lol, that's a good one!

Albert Holguin 24-Jul-15 10:07am View

It's the defacto standard in Windows... not in any other system. I'm still sort of surprised this was never standardized.

Albert Holguin 23-Jul-15 20:08pm View

+5... extern "C" simply makes it easier... unless you speak in mangled terms. The other issue with mangling is that it can also changes based on compiler settings and to add insult to injury, it's non-standard.... so different compilers can make different mangled names.

Albert Holguin 23-Jul-15 20:00pm View

Sounds like a useless property...lol, +5

Albert Holguin 23-Jul-15 20:00pm View

+5... I hate all these special terms as well

Albert Holguin 15-Jul-15 14:39pm View

+5.. on all accounts... including "why haven't you found it on your own" question

Albert Holguin 13-Jul-15 11:29am View

"Future proof"? ...no such thing... :)

Albert Holguin 26-Jun-15 16:33pm View

thanks

Albert Holguin 26-Jun-15 16:32pm View

Not all of us are C# programmers.

Albert Holguin 26-Jun-15 16:20pm View

Modern programmers are using C# to leverage .NET assemblies? ...more like C# programmers are using that...

Albert Holguin 22-Jun-15 15:53pm View

+5

Albert Holguin 10-Jun-15 10:22am View

Perhaps you should set the linger option separately, since it requires a different structure. Your setsockopt() call may be failing, you're not checking the return.

Albert Holguin 9-Jun-15 22:56pm View

Why not just use a class? ...if you need the types to be generic, use a template. The code will be easier to follow and maintain.

Albert Holguin 8-Jun-15 22:14pm View

CentOS 7 is essentially the "free-ware" version of RedHat Enterprise. It's VERY capable but since it's more of a server type of OS, it probably just doesn't do too many things automatically like Ubuntu does. It also does tend to lag on functionality due to the stability requirements of enterprise users.

Albert Holguin 8-Jun-15 22:11pm View

I've tried to set up a multi-language project in Eclipse and well, it's a cluster ****. I assume there's probably a way to configure build scripts (like your .sh) but I haven't seen it. VisualStudio is a lot easier to set up that sort of scenario.

Albert Holguin 1-Jun-15 15:06pm View

This just about sounds like a permissions problem. I'd check build directory permissions, resource file(s) permissions... ??? ... worth checking out.

Albert Holguin 18-May-15 18:23pm View

Why is it an issue? ...if this is for source control purposes, you do know that you can simply ignore the file type right? ...perhaps if you tell us what you're trying to achieve we can help you set it up.

Albert Holguin 12-May-15 16:49pm View

You need to show the code where you are generating and passing the structures. Otherwise it's just a guessing game.

Albert Holguin 8-May-15 12:38pm View

Happens... happy coding! :)

Albert Holguin 7-May-15 10:35am View

Yeah but I think even if you have all dependencies present, compiling a dll in one version and an executable in another will make them incompatible. I had this issue with Studio 6 and 2008.... then saw it again when trying to roll from 2008 to 2010. Again, I wasn't exactly sure what component caused the problem and it didn't bother me enough to try to find out.

Albert Holguin 6-May-15 19:14pm View

I'd stick with gcc/g++ for a beginner. If you ever venture into the Linux world, that is by far the most widely used compiler. In windows you can use them through Cygwin or MinGW. For starting out, I'd also recommend you compiling your simple programs through the command line/terminal and work your way up to an IDE.

Albert Holguin 6-May-15 19:10pm View

8bit PCM is pretty common... not the best but common nonetheless

Albert Holguin 6-May-15 18:59pm View

Yep, I've had some of issues trying to do this in the past.

Albert Holguin 6-May-15 18:59pm View

See my comment above... I've personally had issues with this.

Albert Holguin 6-May-15 18:58pm View

In my personal experience... I've never had luck using DLL's that were compiled with different versions of VisualStudio (more specifically, as other pointed out, the underlying libraries used that you link your software to). I never had enough motivation to figure exactly what part didn't quite match up, but in general... there are issues there of concern.

Albert Holguin 6-May-15 18:52pm View

+5

Albert Holguin 6-May-15 18:51pm View

Upvoted the question because it's a legitimate question and the OP is actually trying. Not sure who/why it was downvoted. (+4)

Albert Holguin 6-May-15 18:49pm View

Even though I like your solution... not sure it's well suited for a newbie. +4 :)

Albert Holguin 5-May-15 11:37am View

Eclipse is an IDE, not a compiler.

Albert Holguin 13-Apr-15 13:02pm View

If you're using TCP/IP, this happens automatically without you doing anything. You have to provide more info on what you're trying to do and what protocols you're using.

Albert Holguin 13-Apr-15 12:59pm View

What are the dependencies (maybe screen cap and place somewhere)? This really shouldn't be the case.

Albert Holguin 23-Mar-15 16:35pm View

Look for tutorials online.[^]

Albert Holguin 18-Mar-15 12:05pm View

Learn to use macros... but also learn about the problems they cause. With that said, happy learning! :)

Albert Holguin 18-Mar-15 10:07am View

I can't revise your code because the whole idea there is bad. Probably the best way for you to test this out is to use a non-gui application. That would prevent your blocking call from being a problem.

Albert Holguin 15-Mar-15 23:11pm View

+5

Albert Holguin 11-Mar-15 22:24pm View

It means the calls you show do absolutely, positively nothing.

Albert Holguin 3-Mar-15 10:50am View

How do I convert serial to serial using completely different voltage levels and pin outs in C++? ...yeah, good luck... +5

Albert Holguin 1-Mar-15 14:43pm View

...although you can easily make infinite for() loops as well too...unfortunately.

Albert Holguin 1-Mar-15 14:41pm View

That's horrible code... you should throw that away and forget you ever saw it.

Albert Holguin 27-Feb-15 16:38pm View

This is sort of an old post... but did you search for any libraries name pthreadGC2? The extension in regular Linux would be .o for the shared object. Cygwin does tend to butcher library names though, they do a .o.dll extension or something similar.

Albert Holguin 17-Feb-15 16:12pm View

One of the things you'll see on older posts if cross-platform compatibility issues with .Net... Don't forget MS has recently announced it's releasing the code for it and intends on making it run natively on Linux (not surge if merging with Mono or converting all of their code).

Albert Holguin 16-Feb-15 8:43am View

Answering as comment since I don't feel like making a real detailed answer. Every program has pointers, since it's the pointer to data in memory (you may not realize they're there... but they're always there). As to when it's useful, well, the alternative is to make copies every time you pass data along, which is terribly inefficient and depending on a few factors, slow.

Albert Holguin 2-Feb-15 21:26pm View

Posting for the OP and anyone who may browse the Q&A.

Albert Holguin 2-Feb-15 14:50pm View

OP, see my comment associated with solution 2...

Albert Holguin 2-Feb-15 14:50pm View

FYI for the OP... this isn't part of standard C/C++. These aren't included in the gcc version of that header file so don't use them if compiling standard code for use in multiple platforms.

Albert Holguin 29-Jan-15 17:05pm View

What's the question?

Albert Holguin 22-Jan-15 22:01pm View

You need to add more information, it's not clear what you're doing. What GSM modem are you using? How are you sending the messages? What do you mean you're "unable to get the right codes"?

Albert Holguin 22-Jan-15 16:21pm View

...and if you're combining two signals of two different sample rates, they must be resampled to the same rate first before combining...

Albert Holguin 22-Jan-15 16:14pm View

No worries... I'm a communications engineer. ;)

Albert Holguin 22-Jan-15 16:12pm View

I believe it's more of a misnomer than what he's actually trying to do. Since he's trying to play a sound, what he's referring to as frequency is sampling frequency...otherwise known as sample rate.

See the arguments for the sound()[^] function.

Albert Holguin 22-Jan-15 16:09pm View

You don't need an FFT to neither combine a signal or to play it back. You only need that if you're doing spectral analysis.

Albert Holguin 22-Jan-15 15:46pm View

+5, if you're combining two signals and all you're trying to do is play the combined signal, then all you need is the sample rate (or sampling frequency). I'd hope both signals were sampled using the same sample rate, otherwise you'd get some odd spectral anomalies that aren't really caused by the mixing of the original signals.

Albert Holguin 22-Jan-15 15:41pm View

This should be a solution. This question gets asked a ton but understanding the concepts really comes down to using them.

Albert Holguin 7-Jan-15 20:49pm View

A good combination of the call stack and adding breakpoints at different places should allow you to narrow down the location of the call and thereby the class/instance. Heck, I've found memory leaks by getting creative with breakpoints.

Albert Holguin 7-Jan-15 20:46pm View

+5... call stack and breakpoints are definitely the way to go.

Albert Holguin 7-Jan-15 15:02pm View

Seems like a great solution... +5

Albert Holguin 7-Jan-15 14:58pm View

Just used the reference because it was the first thing I found with the picture of the build-events section in Visual Studio. I didn't exactly remember what it was called so I had to do a quick search. I mostly work in Linux nowadays.

Albert Holguin 6-Jan-15 15:09pm View

There's a handler you're supposed to override but I can't remember which one. I've done this with a toolbar (had two toolbars, one was a major mode setting, didn't want the mode setting to be undocked), is that what you're trying to do?

Albert Holguin 5-Jan-15 18:08pm View

Sounds like a pain in the rear

Albert Holguin 5-Jan-15 15:04pm View

I always wondered who used edit/continue. I personally wouldn't spend that much time on such a trivial feature.

Albert Holguin 5-Jan-15 9:46am View

Very true :)

Albert Holguin 5-Jan-15 9:41am View

See my solution. A legitimate use would be a corporate environment where they try to track attempted access to blocked sites. Think his "www.google.com" example was just a random website he picked for his question (not that he'd necessarily block google). Guessing as to intent here.

Albert Holguin 26-Nov-14 14:44pm View

Harvest repository? ...I have no clue what that is. The unresolved inclusion sounds like, well... an unresolved inclusion. There is something the code includes that is in non of the include paths.

Albert Holguin 26-Nov-14 14:40pm View

This my friend... is what we would call a code dump. When posting code, post only what's relevant. You also fail to explain what your problem/question is.

Albert Holguin 13-Nov-14 10:02am View

Just by changing VS versions, you're changing libraries. They use completely different MFC versions.

Albert Holguin 10-Nov-14 10:07am View

Look it up.

Albert Holguin 6-Nov-14 14:41pm View

+5

Albert Holguin 6-Nov-14 14:32pm View

So what's the error? ...and did you "delete" it or uninstall it through the regular Windows uninstaller?

Albert Holguin 6-Nov-14 11:52am View

Your question is not clear.

Albert Holguin 6-Nov-14 10:55am View

By the way, when you have multithreading bugs, they're VERY dependent on system architecture because every system handles parallel processing a little differently (even processor clock speeds can affect it, because the thread scheduling slots will be different). Hence the need for robust data/variable access control.

Albert Holguin 6-Nov-14 10:52am View

Unfortunately, the bad part of multi-threaded programming is that debugging is very hard and there's really no simple way of doing it.

Albert Holguin 6-Nov-14 10:50am View

I must admit, I often forget to look at the post date as well.

Albert Holguin 6-Nov-14 10:47am View

+5... it's pretty trivial. For the OP, don't forget you can experiment with things right no the command prompt. If you're not sure what a call does, type in on the prompt and don't put a semicolon at the end and it will output to the prompt.

Albert Holguin 4-Nov-14 10:36am View

Is this for an application that you installed? ...or is it an application that someone else installed? Did the application write to the registry? Did the application store to any protected directories (such as Windows\system32 or even the Program Files directories)?

Albert Holguin 30-Oct-14 16:17pm View

+5...very right!

Albert Holguin 30-Oct-14 10:13am View

Sure.. threading is a tricky subject. I'm sure you'll make a lot of mistakes along the way and learn from them. Debugging multi-threaded problems is a bit of a nightmare, so you'll quickly learn to be more careful with variable/data exchanges.

Albert Holguin 30-Oct-14 10:12am View

Looping on a global boolean is generally ok... IF your thread is doing a read-only operation on it.

Albert Holguin 29-Oct-14 10:14am View

Sure. If a thread has to keep running, each "iteration" or work run iteration, you update the variables from any externals only once at the start of the iteration. After the iteration initialization, the thread once again has full control of his structure and variables. The alternative, when you do require "near" simultaneous access of data/variables (near meaning it's not really simultaneous, but you don't wait until the one thread is completely done) is to use a mutex/critical section for protection.

Albert Holguin 29-Oct-14 9:25am View

Not sure what you're asking... the important thing to realize when you're creating a data structure to pass on to the thread is that while that thread is running, NO OTHER THREAD touches those variables until that thread is done with them.

Albert Holguin 28-Oct-14 15:12pm View

thanks

Albert Holguin 5-Sep-14 13:52pm View

If you have a specific reply to a solution, use the "comment" section under that solution. Don't post follow-ups as solutions please. Keeping this relatively orderly will help others in the future that may have the same problem you have.

Albert Holguin 6-Aug-14 15:10pm View

Perhaps you should let us know what you're trying to accomplish by moving these system files around. It's very obvious to me what your problems are with this batch file (permissions plus paths) but I'm not sure why you're even doing this at all. Perhaps if you share what you're trying to accomplish you can get recommendations on how to accomplish your goal in a cleaner manner.

Albert Holguin 30-Jul-14 1:15am View

...but I would agree that some 90% of issues are file permission based...

Albert Holguin 30-Jul-14 1:09am View

Did see that, think the only thing that may have made this answer better would be an example of some of the discrepancies. I tried to think of some, but I may confuse them with other windows library implementations (since I've been working a lot with alternative implementations recently).

Albert Holguin 29-Jul-14 23:47pm View

This may get you what you need, certainly not the best option if you're the developer.

Albert Holguin 29-Jul-14 23:45pm View

+4, most issues I've seen do have to do with permissions, but there are other possibilities... hard to tell without more info from OP.

Albert Holguin 10-Jul-14 17:28pm View

Any more details as to what you're trying to accomplish? ...In Linux, it's easy enough to have a computer auto-login, then you can access anything you need under that login. In Windows I'm not so sure (but I believe it's also possible). The login portion would be configured within the OS of interest, then you can access anything via sockets (or any other IPC).

Albert Holguin 10-Jul-14 16:58pm View

This smells strangely like homework...

Albert Holguin 9-Jul-14 9:59am View

I've done this before... for debugging purposes... as long as you flush the buffer, it should write out to file. It's possible that somewhere in your code the output file name is different when in debug mode, check for that? Your path may also be different when running in debug mode, so make sure you're checking the right path.

Albert Holguin 2-Jul-14 16:33pm View

That happens every now and then... those great little mysteries you solved but not really...lol, at least you have something working now! :)

Albert Holguin 2-Jul-14 16:32pm View

m stands for magic... :p

Albert Holguin 1-Jul-14 17:18pm View

When you just create a default socket, it'll use the first available NIC (the order is that listed when you do ipconfig). You can actually change the order of the adapters independently of the program by disabling/enabling them (the last enabled goes to the top of the list)... at least that's how you could do it in other Windows versions, not sure if that still works in Weven.

Albert Holguin 1-Jul-14 17:15pm View

When you look at the network adapter settings, there should be IPv6 and IPv4 listed independently... you can enable/disable one or the other.

Albert Holguin 1-Jul-14 15:25pm View

Have you checked to make sure IPV4 is enabled on the NIC? ...also, make sure that when you do an ipconfig, the first address listed is real and not some virtual interface for some other program.

Albert Holguin 23-Apr-14 15:46pm View

There's not much to say about it... it's a general programming language. It runs on the CLR, a software abstraction engine designed (virtual environment) designed to partially sandbox software. The abstraction allows for multiple languages to be able to create code that run within it, since there's an intermediate compilation that creates your application. Once you deploy, the intermediate build is compiled locally in a process commonly referred to as "just-in-time compilation". As for implementing algorithms, you'll always have libraries available to you, just like in C/C++.

Albert Holguin 23-Apr-14 10:44am View

Only if it's URGENTZ

Albert Holguin 23-Apr-14 10:32am View

I know of one converter... the do it by hand converter... :p

Albert Holguin 23-Apr-14 10:32am View

I wouldn't say it's not possible, more like it's hard but not impossible.

Albert Holguin 28-Mar-14 17:34pm View

Personally, I wouldn't use a solution that will require a third party daemon if you don't have to.

Albert Holguin 27-Mar-14 18:03pm View

You do realize that in the MS link you provided it says (i.e. no longer supported):
This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.

Albert Holguin 27-Mar-14 17:20pm View

Messaging also has it's pros/cons... for example, to use windows messaging, you need a window, you can't message to an application that doesn't have a window (although the window can be invisible), and of course, the messaging is that case is Windows specific and cannot be used in any other OS.

Albert Holguin 27-Mar-14 17:17pm View

You would need a new connection every time (unless you use connection-less transfers, but then you lose some of the benefits of sockets). I'm not sure I know what you mean when you say "message bus". Typically any messaging system will require a messaging marshaling system (i.e. something that does the actual message transfers). In Windows messaging, that's just the Windows kernel. Not sure if that's the type of messaging you're referring to. Sockets can actually serve in a similar fashion if configured properly, for example... if all clients are accessing the same data, you could use multicasting, where everyone interested in the data joins the multicast group and receives the datagrams (packets).

Albert Holguin 27-Mar-14 16:08pm View

There would still be a lot of questions... would all of your clients get all of the same data or use different streams? ...what are the data rates we're talking about? Some think real-time voice rates are high, but that's actually slow by today's standards, so it really depends on how much data you're moving.

Typically I would recommend to use sockets when possible because they're probably the most flexible IPC option available today, however, they're not nearly the fastest. If you're dealing with a high-volume of data at high-rates, then the overhead of sockets starts to become an issue (you also have to keep in mind that the network stack is a shared system resource). In that case, you have to look at faster options.

Albert Holguin 14-Mar-14 15:07pm View

yeah, use other ways... you can configure the routers to forward just about anything, but if you have to reconfigure a router to do something that you could just do differently, than might as well do it differently (means the other solution is probably better)

Albert Holguin 6-Mar-14 9:43am View

Problem is.... no router is going to forward those messages... because they look like a virus/worm.

Albert Holguin 5-Mar-14 9:30am View

That address means I'm broadcasting to EVERYONE on the internet, so it may not be considered a valid address. Typically even when using broadcasts, you'd confine the broadcast to your own subnet... for example, 192.168.1.255 (just a random example).

Albert Holguin 28-Feb-14 10:52am View

Where are you making these calls from?

Albert Holguin 28-Feb-14 10:49am View

Your first link is the German site. (I just edited the link to go to the English site)

Albert Holguin 26-Feb-14 10:36am View

Not sure if it would make a difference... just thinking here... but are these static or dynamic libraries? ...wondering if you could possibly wrap the libraries in another library so the namespaces are completely separate (since the global namespace of a dll is independent of the calling exe), it would be a hassle but that may work.

Albert Holguin 25-Feb-14 13:16pm View

What kind of control is it?

Albert Holguin 25-Feb-14 10:23am View

What's your network topology like? You probably shouldn't broadcast to 255.255.255.255 anyway, not sure that's even valid.

Albert Holguin 19-Feb-14 16:32pm View

Like I said, it's not in the documentation, but it is in the code.... and when exactly has logic ever stopped MS from doing something? lol

Albert Holguin 19-Feb-14 15:20pm View

True, overriding is trivial.

Albert Holguin 19-Feb-14 15:18pm View

I looked within the afxwin header that's part of the VS2008. The article was written around 2002 I believe, so if they're not in the new CDocument, it may be they were removed, but they were also not referenced in the 2008 documentation even though I can see they're there.

Albert Holguin 19-Feb-14 10:40am View

The thing is... you can make them equally fast if you avoid the pitfalls. For example, some of the std containers pre-allocate data because dynamically allocating data is slow. So even if you only load one object into the container, it will still take up (let's say) the size of five objects just in case you load more. If you exceed the container size, then it has to reallocate memory and copy the old data into the larger allocation. Well, if you know your size, you can always preallocate the memory and save yourself a lot of time, this goes for both C++ and C. So, it's more like knowing what causes slowdown in each and avoiding the situations.

Albert Holguin 19-Feb-14 10:09am View

I would agree with CPallini on this topic. It's all about who writes the code and knowing what are the things that can cause slowdowns in code.

Albert Holguin 12-Feb-14 11:39am View

If you're trying to use it for educational purposes, you can usually get a demo version of the core that'll last for a month or so. If it's for business purposes, then you'll just have to bite the bullet and pay for it (depending on the feature, they run around ~$8K). Alternative is for you to code the stuff yourself from scratch.

Albert Holguin 11-Feb-14 16:51pm View

How are you sharing the data? ...this just about points to thread data access problems (or lack of thread synchronization).

Albert Holguin 11-Feb-14 16:49pm View

Yes, this one... this is a place with experts that know about threads.

Albert Holguin 11-Feb-14 14:18pm View

I was referring to your other solution. Settle down.

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