Re: Manipulating of .txt file - C / C++ / MFC Discussion Boards

Re: Simple question about templates

David Crow2-Jul-17 18:44

David Crow

2-Jul-17 18:44

I'm not sure I entirely understand the problem so my suggestion may be as valuable as a $3 bill. Can you use:

offset = strText.find_first_not_of(0x20, offset);

Or could you add the "search for" character as part of the constructor?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

Re: Simple question about templates

Richard MacCutchan2-Jul-17 22:55

Richard MacCutchan

2-Jul-17 22:55

Thanks, that did work, and your suggestion about the constructor I already tried. However, I am still wondering if there is any way to include string or character literals in such a template.

Re: Simple question about templates

jschell5-Jul-17 7:22

jschell

5-Jul-17 7:22

Presumably your goal is to use a set of characters rather than one character for your separator.
And the classes in use do not provide that functionality.

I believe tokenizers iterate through the string character by character, perhaps for efficiency and perhaps to avoid the problem you have.

If you want to avoid iteration then perhaps strtok() might solve it.

Re: Simple question about templates

Richard MacCutchan5-Jul-17 7:28

Richard MacCutchan

5-Jul-17 7:28

Thanks, that is the conclusion I came to, and I resolved the issue with a slightly different implementation. I was really just trying to learn a bit more about templates, and wondered if there was any provision for automatically converting constant strings between ASCII and Unicode. It's obviously something to be aware of, and avoid.

Manipulating of .txt file

Artur Grabowski1-Jul-17 22:44

Artur Grabowski

1-Jul-17 22:44

Welcome guys!!!
I am a beginner in C++ and I have a little task to solve. Ihave a file .txt like this :
net.txt - Google Drive[^]
And i want make tables that for each number gives all value about the nuber from data
Something like this :

Number9	
from	value
1	0,70606
3	0,99605
11	-0,28155
12	0,58371
15	0,70069
17	-0,95633
18	0,84633
19	0,77246
25	0,49101
30	-0,76256
31	0,77975
34	0,73573
44	-0,6106
45	-0,91379
51	0,25814
53	-0,59725
54	-0,78294
58	0,13108
70	-0,02528
73	0,37034
75	0,23552
76	-0,54187
78	0,77419
79	0,4681
80	-0,01923
83	0,39902
85	0,82687

I will be grateful for help or advices
Thanks !!!!

Re: Manipulating of .txt file

Richard Andrew x642-Jul-17 3:59

Richard Andrew x64

2-Jul-17 3:59

Artur Grabowski wrote:
I will be grateful for help or advices

We're willing to help with good advice. But you need to ask a specific question.

What have you tried? Where does it go wrong? Are there any error messages? Post a snippet of the text file you're using and the relevant portion of your code.

The difficult we do right away...
...the impossible takes slightly longer.

modified 2-Jul-17 9:07am.

Re: Manipulating of .txt file

Artur Grabowski2-Jul-17 5:18

Artur Grabowski

2-Jul-17 5:18

i was trying but the problem is the parsing of uploaded file :/
in example :

connection definition section :

target | site | source:weight
-------|------|----------------------------------------------------------------------------------------------------------------
     1 |      |   2: 0.00000,   3: 0.00000,   4: 0.00000,   5: 0.00000,   6: 0.00000,   7: 0.00000,   8: 0.00000,   9: 0.70606,
                 10: 0.00000,  11: 0.00000,  12: 0.00000,  13: 0.00000,  14: 0.00000,  15: 0.00000,  16:-0.38621,  17: 0.00000,
                 18: 0.00000,  19: 0.00000,  20: 0.00000,  21: 0.00000,  22: 0.00000,  23: 0.00000,  24: 0.00000,  25: 0.00000,
                 26: 0.00000,  27:-0.51685,  28: 0.00000,  29: 0.00000,  30: 0.00000,  31: 0.65813,  32: 0.00000,  33: 0.00000,
                 34: 0.00000,  35: 0.00000,  36:-0.23965,  37: 0.00000,  38: 0.00000,  39: 0.00000,  40:-0.53012,  41: 0.00000,
                 42: 0.65078,  43: 0.00000,  44:-0.25587,  45: 0.61060,  46:-0.77841,  47:-0.10781,  48: 0.00000,  49: 0.00000,
                 50: 0.00000,  51: 0.60152,  52:-0.04528,  53: 0.00000,  54: 0.00000,  55: 0.00000,  56: 0.34451,  57: 0.00000,
                 58:-0.63902,  59: 0.00000,  60: 0.00000,  61: 0.00000,  62: 0.00000,  63: 0.00000,  64: 0.00000,  65: 0.00000,
                 66:-0.35604,  67:-0.65445,  68: 0.00000,  69:-0.18092,  70: 0.00000,  71: 0.00000,  72: 0.00000,  73:-0.07051,
                 74: 0.00000,  75: 0.00000,  76: 0.62501,  77: 0.00000,  78:-0.66639,  79: 0.00000,  80: 0.00000,  81: 0.00000,
                 82: 0.54643,  83: 0.00000,  84: 0.86970,  85: 0.00000,  86: 0.00000,  87: 0.00000,  88: 0.17621,  89: 0.00000,
                 90: 0.00000,  91: 0.00000,  92: 0.00000,  93: 0.00000,  94: 0.00000,  95:-0.48619,  96:-0.21145,  97:-0.67891,
                 98: 0.00000,  99: 0.70803, 100:-0.94970, 101: 1.00000, 102: 1.00000, 103: 1.00000, 104: 1.00000, 105: 1.00000,
                106: 1.00000, 107: 1.00000, 108: 1.00000, 109: 1.00000
     2 |      |   1: 0.00000,   3: 0.00000,   4:-0.70584,   5: 0.00000,   6: 0.00000,   7: 0.00000,   8: 0.73104,   9: 0.00000,
                 10:-0.68872,  11: 0.00000,  12:-0.06770,  13: 0.00000,  14: 0.00000,  15: 0.00000,  16:-0.51967,  17: 0.00000,
                 18: 0.17679,  19: 0.00000,  20: 0.00000,  21: 0.00000,  22: 0.00000,  23: 0.97774,  24: 0.00000,  25: 0.00000,
                 26:-0.53439,  27: 0.00000,  28: 0.00000,  29: 0.00000,  30: 0.00000,  31:-0.36626,  32: 0.00000,  33:-0.55026,
                 34: 0.00000,  35: 0.07276,  36:-0.20741,  37: 0.00000,  38: 0.00000,  39: 0.00000,  40: 0.00000,  41: 0.52934,
                 42: 0.00000,  43: 0.37477,  44: 0.00000,  45: 0.00000,  46: 0.00000,  47: 0.00000,  48: 0.72724,  49: 0.00000,
                 50: 0.00000,  51: 0.00000,  52: 0.00000,  53: 0.26374,  54: 0.00000,  55: 0.00000,  56: 0.00000,  57: 0.00000,
                 58: 0.00000,  59: 0.00000,  60: 0.00000,  61: 0.00000,  62:-0.92754,  63: 0.00000,  64:-0.38383,  65: 0.00000,
                 66: 0.00000,  67: 0.00000,  68: 0.00000,  69: 0.00000,  70:-0.70225,  71:-0.40858,  72: 0.13286,  73: 0.00000,
                 74: 0.00000,  75: 0.00000,  76: 0.00000,  77: 0.00000,  78:-0.89306,  79: 0.00000,  80: 0.00000,  81:-0.52612,
                 82: 0.00000,  83: 0.00000,  84: 0.00000,  85: 0.00000,  86:-0.68323,  87: 0.00000,  88: 0.00000,  89: 0.00000,
                 90: 0.45177,  91:-0.31180,  92:-0.08625,  93: 0.00000,  94: 0.00000,  95: 0.00000,  96: 0.00000,  97: 0.00000,
                 98: 0.00000,  99: 0.00000, 100: 0.00000, 101: 1.00000, 102: 1.00000, 103: 1.00000, 104: 1.00000, 105: 1.00000,
                106: 1.00000, 107: 1.00000, 108: 1.00000, 109: 1.00000
     3 |      |   1: 0.00000,   2: 0.00000,   4: 0.83542,   5: 0.00000,   6: 0.09158,   7: 0.00000,   8: 0.00000,   9: 0.99605,
                 10: 0.68074,  11: 0.00000,  12: 0.92181,  13: 0.00000,  14: 0.00000,  15: 0.00000,  16: 0.00000,  17: 0.00000,
                 18: 0.00000,  19: 0.00000,  20: 0.00000,  21: 0.00000,  22: 0.00000,  23: 0.81755,  24: 0.00000,  25: 0.00195,
                 26: 0.00000,  27: 0.00000,  28: 0.00000,  29: 0.00000,  30: 0.00000,  31: 0.00000,  32: 0.00000,  33:-0.02341,
                 34: 0.97974,  35: 0.00000,  36: 0.00000,  37: 0.00000,  38:-0.08182,  39: 0.00000,  40: 0.18787,  41: 0.00000,
                 42: 0.00000,  43: 0.64793,  44: 0.00000,  45: 0.00000,  46: 0.00000,  47: 0.00000,  48: 0.00000,  49: 0.09191,
                 50: 0.00000,  51: 0.00000,  52: 0.00000,  53: 0.00000,  54: 0.00000,  55: 0.00000,  56:-0.92661,  57:-0.47441,
                 58: 0.00000,  59: 0.00000,  60: 0.00000,  61: 0.00000,  62: 0.56569,  63: 0.00000,  64: 0.73977,  65: 0.00000,
                 66: 0.55625,  67:-0.72023,  68: 0.00000,  69: 0.01612,  70: 0.07420,  71: 0.00000,  72: 0.00000,  73: 0.00000,
                 74:-0.08375,  75: 0.00000,  76: 0.83450,  77: 0.00000,  78:-0.92284,  79: 0.00000,  80: 0.00000,  81: 0.00000,
                 82:-0.36193,  83: 0.00000,  84: 0.00000,  85: 0.00000,  86: 0.00000,  87: 0.17190,  88: 0.00000,  89: 0.00000,
                 90: 0.00000,  91: 0.00000,  92: 0.00000,  93: 0.16294,  94: 0.00000,  95: 0.00000,  96: 0.00000,  97: 0.00000,
                 98:-0.12163,  99: 0.00000, 100: 0.00000, 101: 1.00000, 102: 1.00000, 103: 1.00000, 104: 1.00000, 105: 1.00000,
                106: 1.00000, 107: 1.00000, 108: 1.00000, 109: 1.00000

Re: Manipulating of .txt file

Richard Andrew x642-Jul-17 6:14

Richard Andrew x64

2-Jul-17 6:14

Artur Grabowski wrote:
the problem is the parsing of uploaded file

That's what I was trying to get at. What EXACTLY is the problem?

The difficult we do right away...
...the impossible takes slightly longer.

Re: Manipulating of .txt file

Artur Grabowski2-Jul-17 6:34

Artur Grabowski

2-Jul-17 6:34

I don't know how place data in right side

Re: Manipulating of .txt file

Richard Andrew x642-Jul-17 6:52

Richard Andrew x64

2-Jul-17 6:52

I'm afraid that's not a good enough explanation of the problem you are facing to give you a good answer.

Is the problem that you have no idea how to begin?

In that case it will be difficult to help, because we can't teach you programming from scratch.

Why don't you post what code you have so far.

The difficult we do right away...
...the impossible takes slightly longer.

Re: Manipulating of .txt file

Artur Grabowski2-Jul-17 7:41

Artur Grabowski

2-Jul-17 7:41

C++

QMap< int, QMap<int,double> >::iterator it;
    it=targets->begin();
    while(it!=targets->end())
    {
        QString mod="   ";
        mod.append(QString::number(it.key())+" |      |  ");

        int rowfillcount=0;
        QMap<int,double>::iterator it2=it.value().end();
        do
        {
            --it2;

            mod.append(QString("  ")+QString::number(it2.key())+":"+QString::number(it2.value(),'d',5)+",");

            if(++rowfillcount==8)
            {
                rowfillcount=0;
                mod.append("\n                 ");
            }
        }
        while(it2!=it.value().begin());

        mod[mod.lastIndexOf(",")]='\n';

        ui->plainTextEdit_result->appendPlainText(
        mod);

        it++;
    }

    ui->plainTextEdit_result->appendPlainText(
    "-------|------|----------------------------------------------------------------------------------------------------------------\

Re: Manipulating of .txt file

David Crow2-Jul-17 18:36

David Crow

2-Jul-17 18:36

Artur Grabowski wrote:

And i want make tables that for each number gives all value about the nuber from data

You do realize that you are the only one that understands this statement, don't you? How do the contents of the file "map" to your desired output?

Artur Grabowski wrote:

I will be grateful for help or advices

Put your keyboard away. What does "parsing the file" look like using paper and pencil?

Re: Manipulating of .txt file

Artur Grabowski3-Jul-17 20:00

Artur Grabowski

3-Jul-17 20:00

This is a script to do this in ruby :

#!env ruby

def parse(text)
  text.split(',').map do |item|
    key, value = item.split(':')
    [key.to_i, value.to_f]
  end.to_h
end

input_data = File.read(ARGV[0]).gsub("\r", "")

id = nil
entries = {}

input_data.split("\n").each do |line|
  columns = line.split("|")

  id = columns[0].to_i if columns.size == 3
  entries[id] ||= {}

  if columns.size == 3 || columns.size == 1
    entries[id].merge! parse(columns.last)
  elsif columns.size != 0
    puts "? #{line}"
  end
end


entries.sort_by { |k,v| k }.each do |key, weights|
  puts
  puts
  puts "# neuron #{key}"

  puts "source\tweight"
  weights.sort_by { |k, v| k }.each do |source, weight|
    puts "#{source}\t#{weight.to_s.gsub('.',',')}"
  end
end

Thanks for help !!!

Checksum Generators With Advanced Functions

Member 1328723330-Jun-17 9:49

Member 13287233

30-Jun-17 9:49

Hello,

Checksum generator ExactFile has the function to create checksums for all files within an entire directory and later compare those files with the generated checksum file. (Other checksum generators which I have tried to use do not have the function to compare all files within a directory with their checksum file generated previously.)

However, the latest version of ExactFile seems to be from 2009. Are there any other good checksum generators which include the function to compare all files within a directory with their checksum file generated previously?

Re: Checksum Generators With Advanced Functions

Richard Andrew x6430-Jun-17 11:08

Richard Andrew x64

30-Jun-17 11:08

Excuse my ignorance, but has the method for calculating a checksum changed since 2009?

The difficult we do right away...
...the impossible takes slightly longer.

Re: Checksum Generators With Advanced Functions

Member 132872331-Jul-17 2:28

Member 13287233

1-Jul-17 2:28

I am not knowledgeable in this subject, but since algorithms for generating checksums have not changed since 2009, ExactFile can still be used. But the author of the program says that it is a beta version and that improvements may be made. Therefore, I thought that it is better to find a checksum generator which is not in a beta stage and has been released more recently.

Re: Checksum Generators With Advanced Functions

Richard MacCutchan1-Jul-17 2:32

Richard MacCutchan

1-Jul-17 2:32

Google will find it for you.

Re: Checksum Generators With Advanced Functions

Randor 1-Jul-17 0:11

Randor

1-Jul-17 0:11

Hi,

This is not a c++ question. Interesting that you created this account specifically for asking this single question on a c++ forum.

What I find more interesting is that the linguistic syntax you are using such as "which include", "generated previously" and preposition usage such as "within" and the overall sentence length[^] strongly imply a native English speaker and not someone from the "Russian Federation" as your profile indicates.

Best Wishes,
-David Delaune

Re: Checksum Generators With Advanced Functions

Member 132872331-Jul-17 2:28

Member 13287233

1-Jul-17 2:28

I tried to ask a question in a simple way, as is required by the rules. If the question is not in the appropriate category, I would like to know where to post it.

Vlad
Volgograd, Russia

Re: Checksum Generators With Advanced Functions

jschell2-Jul-17 8:25

jschell

2-Jul-17 8:25

A checksum is trivial functionality and was by the first reference I found, created in 1961.

There are variations but those are not relevant unless you have specific requirements.

Other than that libraries that might provide that functionality, especially now, would only (or should only) be adding management functionality - such as apply it to an entire directory.

So if you want to look for something 'better' you must first determine what, besides the checksum itself, that you need. Then find the libraries that meet those needs.

Exception Handling MFC detail information

ForNow28-Jun-17 5:40

ForNow

28-Jun-17 5:40

Hi
I'm getting a heap corruption error while debugging one
Of my message handling routines
It is on exit from the routine which lead me to think it's something with the stack or local variables
However I have not declared any local variables it's just parameters wparam and lparam
I can try to wrap the code in a try and catch I guess CMemoryException
I don't see any class members for CMemoryException Like line numbers ( line which caused the exception)
BTW wparam is a pointer from tcp/ip message/buffer and lparam is the length
Which I memcpy after doing a new in the routine
I am running 64 bit code

Thanks

Re: Exception Handling MFC detail information

Randor 28-Jun-17 6:11

Randor

28-Jun-17 6:11

Hey,

If you spend a few minutes to setup GFlags... you should quickly find the source of the heap corruption.

Where to get GFlags[^]

This is a very powerful tool... and you will become a much better engineer if you learn how to use the Windows debugging tools. Note that GFlags is not just for kernelmode... you can enable per-process heap monitoring in usermode processes:

Detecting Heap Corruption Using GFlags and Dumps[^]

Best Wishes,
-David Delaune

Re: Exception Handling MFC detail information

ForNow28-Jun-17 16:45

ForNow

28-Jun-17 16:45

I tried it the Dialog Version of flags and this this time there was not a exception break

however I knew there is a problem because my stream in code didn't work meaning it didn't show

the text , typically when that happens there are some very subtle storage overlays or memory

exceptions as you mentioned when running in debug mode they sometimes show and sometimes

don't

So I just started taking my code apart removing all the control just having the rich edit

and the text was displayed

I'll put the code for the control back one at a time

until I find the exception

thanks

Re: Exception Handling MFC detail information

Victor Nijegorodov29-Jun-17 9:33

Victor Nijegorodov

29-Jun-17 9:33

ForNow wrote:
BTW wparam is a pointer from tcp/ip message/buffer and lparam is the length

Is this message sent or posted?

Re: Exception Handling MFC detail information

ForNow29-Jun-17 11:13

ForNow

29-Jun-17 11:13

this is the code that is causing the exception

C++

LRESULT CprogDebug::GET_ZOS_STORAGE(WPARAM mywparam, LPARAM mylparam)
{
    
    
    mystorage[I]->len = mywparam;
    mystorage[I]->buffers = new char[mystorage[I]->len];
    memcpy((void *)mystorage[I]->buffers, (void *)mylparam, mystorage[I]->len);
    mystorage[I]->casid = as_id;
        mystorage[I]->Create(IDD_DIALOG6, NULL);
	
	return TRUE;
}

The code is invoked from a postmessage I.E

C++

::PostMessage(thisocket->callwnd,thisocket->msg,(WPARAM) nRead,(LPARAM)sockbuffer.GetBuffer(0));

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