Evaluvating Expression in C# - C# Discussion Boards

Saranya B11-Apr-07 19:19

11-Apr-07 19:19

Hi All,
Anybody knows why main() is called as main?
Why not someother names but Main()?
Anticipating your responses.
Thank You,

-Saran

Re: Why Main?

CPallini11-Apr-07 20:49

CPallini

11-Apr-07 20:49

Because it's main, i.e. the parent of the other ones.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: Why Main?

kkun11-Apr-07 21:25

kkun

11-Apr-07 21:25

Its name based on its compiler ,
If compiler is editable, you can change it to whatever you like ,

Re: Why Main?

Jaiprakash M Bankolli11-Apr-07 21:45

Jaiprakash M Bankolli

11-Apr-07 21:45

My feeling is that Microsoft wanted to have its own way of specifying the single entry point to program. And wanted to get away with traditional way !!!

Regards,
Jaiprakash M Bankolli
jaiprakash.bankolli@gmail.com
http://jaiprakash.blog.com/

Re: Why Main?

Guffa11-Apr-07 22:31

Guffa

11-Apr-07 22:31

The name comes from C, where the function that holds the code for the main program is called "main", so the name has been around for at least 30 years.

---
single minded; short sighted; long gone;

RichTextBox flickering

moid.ahmed11-Apr-07 19:16

moid.ahmed

11-Apr-07 19:16

I am using RichTextBox class to display some text, and then I want to syntax highlight whats written to it.
So, i use Find(...) to select required text and then use SelectionFont,SelectionColor to changle font/color of the words i need.
The problem is that when i type, i have to do this when the text changes, and i actually see how text gets selected and changes it's color, and that is very annoying...
So, my question is, how to solve this problem? Maybe i can somehow disable redrawing of control till i completely highlighted control or smthing like ?

Re: RichTextBox flickering

andre_swnpl11-Apr-07 19:29

andre_swnpl

11-Apr-07 19:29

have a look at this article http://www.codeproject.com/richedit/htmlricheditctrlssl.asp[^]

This should give you an idea of how to implement syntax highlighting.

Evaluvating Expression in C#

act_ramesh11-Apr-07 18:53

act_ramesh

11-Apr-07 18:53

Hi EveryBody,

We know that Delegate is a Functional Pointer. But i want to pass Member name as a variable to Delegates. The example given below.

*--------------------------------------------------------------------------
using System;

namespace Delegate_concept
{
public delegate void MyFunction(int a, int b);
class Delegate_Method
{
public static void Function1 (int x, int y)
{
Console.WriteLine("Sum is"+(x+y));
}
public static void Function2 (int x, int y)
{
Console.WriteLine("Sub is"+(x-y));
}
public static void Function3(int x, int y)
{
Console.WriteLine("Mul is"+(x*y));
}

static void Main(string[] args)
{
int i = 1;
string Fstring = "Function";
string nString;

for ( i=1; i<=3; i++)
{
nString=Fstring+i.ToString();
MyFunction mObj = new MyFunction(@(nString));
mObj(20,5);
Console.Read();
}
}
}
}
*------------------------------------------------------------------------

In the above example, i am storing each function name into "nString" variable.
While creating instance, can i pass this variable name as a parameter. Because the variable name contains name of the function. Or i want to evaluvate the variable nString and execute the function name which i stored in "nString" variable.

If any solution or suggession please write to: act_ramesh@yahoo.com

Thanks

sfsad sdafasd fsadfasdf asd fsdf sdafsadsdafsda

Re: Evaluvating Expression in C#

Stevo Z11-Apr-07 22:28

Stevo Z

11-Apr-07 22:28

Constructor MyFunction mObj = new MyFunction(void (int, int)target);

expects a target == method . You cannot provide string instead of method itself.

If you really want to call those methods by their index(Function1, Function2,...) , put them into a List<myfunction> or Dictionary<int, myfunction=""> :

Dictionary<int, myfunction=""> dFunctions = new Dictionary<int, myfunction="">();
//or
List<myfunction> lFunctions = new List<myfunction>();

//fill list/dictionary
...

//call method
for ( i=1; i<=3; i++)
{
dFunctions[i](20,5); // or lFunctions[i](20,5);
Console.Read();
}

Why didn't I get the job?

Mark J. Miller11-Apr-07 12:04

Mark J. Miller

11-Apr-07 12:04

I recently had a series of very good interviews with a company I was very excited about and was told I was the top candidate for the senior position. At the end of the interview I was given the assignment below and I was told to zip up the files and return them to the project manager for review when I was done. I was open in the interview that I had no experience in unit testing. I was assured this was no problem and I could omit that portion of the exercise. However, I opted to give it a shot - an opportunity to show I was a quick and willing learner when needed.

After I turned in the "assignment" to the project manager, I was told that after reviewing the code I would be passed over for the position.

I would be VERY appreciative of any feedback anyone might have as to what's wrong with my sample project? I have worked for the same small company for over 6 years and had no experience when I did, so I don't know if there's something I did that killed it for me. I bear no ill will to the company I interviewed for and I have removed any indications from any text that might indicate who the interview was with. But I still must continue to interview and if I'm doing something wrong, I want to nip it in the bud.

The assignment is below and here's a link to the project, exactly as I submitted it: Hire_Exercise.zip (179.7 Kb)

Please, don't spare my feelings, I would really appreciate some constructive criticism.

Thanks,

Mark
--------------------------------------------------------------------------------------------------

Hiring_Exercise

Development Requirements

1) Read an ascii text file named “Hire_input.txt” that contains a list of numbers with values between 0 and 100, each number separated by a cr/lf

Sample input (Hire_input.txt)
6
54
12
22
1
6

2) Sort the numbers in ascending order and write the results to an output file named “Hire_Ascending.txt”. Format the file in the same manner as the input file (cr/lf delimiters).

Sample output (Hire_Ascending.txt)
1
6
6
12
22
54

3) Group the numbers by their value and produce a histogram list providing the count of how many numbers of each value were read. Write the output to a file named “Hire_histogram.txt”, formatted using cr/lf delimiters.

Sample output (Hire_histogram.txt)

1 – 1
6 – 2
12 – 1
22 – 1
54 – 1

Additional Notes

• Name the program Hire_exercise.exe
• No user interface is required, the program will be run from the console should require no command line parameters to execute normally
• Assume that all files (input and output) will be found/created in the same directory as the program executes
• As part of the exercise, you are expected to write unit tests appropriate for the task.
• Use the development tools of your choice.
• You may not use any external libraries with the exception of standard I/O and a unit testing framework (if you choose).
• You may not use any built-in data structures such as lists, vectors, queues etc. You must build your solution using basic types such as integers, strings and arrays.
• You may not use any built-in sort or histogram functions.
• Please submit all available aspects of your work (source, buildfiles, executables, test input/output etc)