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  • Is it good practice to separate code into blocks?

    - by LM
    If I have a method that does multiple, related things, is it good practice to stick each "thing" that the method does into a seperate block? Ex. { int var //Code } { int var //More Code } It would help reduce the number of local variables, and make the code more readable, but I'm not sure if it's a good idea.

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  • C# lines of Code

    - by matt
    What does this do exactly? var counts = new Dictionary<string, int>(); for (int i = 0; i < 10; i++) counts[string.Format("STA Thread Queue Worker Thread No. {0}", i + 1)] = 0; Thanks

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  • Delegates with explicit "this" pointer?

    - by Qwertie
    Is it possible to adapt a method like this function "F" class C { public void F(int i); } to a delegate like Action<C,int>? I have this vague recollection that Microsoft was working on supporting this kind of adaptation. But maybe I misremembered!

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  • How can make a variable (not class member) "read only" in C#

    - by devfreak
    Hi, I'm new to the C# world and I can't find a method to declare read only variable in C# (something like declaring "const" variable in c++). Is there one? I'll give you an example: ... int f() { return x; } // x is not const member ... void g() { int readOnlyVar = f(); // is there a method to declare readOnlyVar as read only or const // Some code in which I want to restrict access to readOnlyVar to read only }

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  • C++ operator ','

    - by user286215
    what is result of operator ',' by standard? Last argument? in code like this, for example: int a = 0; int b = 1; while(a,b); or using it like this is not allowed? MSVS thiks that result is b, is it true?

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  • What to prefer in the following case?

    - by GK
    say suppose I have class as : public class Age { private int age; public int getAge() { return this.age; } } In my Main class I am calling the getAge() method many times. So I wanted to know is it advisable to call so many times or call once and assign it to some variable and use that variable. Which is best and why?

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  • How to return a value based on the type of the generic T

    - by Blankman
    I have a method like: public T Get<T>(string key) { } Now say I want to return "hello" if the type is a string, and 110011 if it is type int. how can I do that? typeof(T) doesn't seem to work. I ideally want to do a switch statement, and return something based on the Type of the generic (string/int/long/etc). Is this possible?

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  • Retrieving the first digit of a number

    - by Michoel
    Hi, I am just learning Java and am trying to get my program to retrieve the first digit of a number - for example 543 should return 5, etc. I thought to convert to a string, but I am not sure how I can convert it back? Thanks for any help. int number = 534; String numberString = Integer.toString(number); char firstLetterChar = numberString.charAt(0); int firstDigit = ????

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  • Why use one dimensional array instead of a two dimensional arrray?

    - by user3869145
    I was doing some work handling a lot of information and my partner told me that I was using too many matrices to manipulate the variables of the problem. The idea was to use one dimension arrays int a[] instead of the 2 dimensional arrays int b[][], to save memory and processing speed of the algorithm. How certain is that this change will accelerate the speed of execution or compilation of my code in c ++?

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  • Passing C string reference to C#

    - by user336109
    c code extern "C" __declspec(dllexport) int export(LPCTSTR inputFile, string &msg) { msg = "haha" } c# code [DllImport("libXmlEncDll.dll")] public static extern int XmlDecrypt(StringBuilder inputFile, ref Stringbuilder newMsg) } I got an error when I try to retrieve the content of newMsg saying that I'm trying to write to a protected memory area. What is the best way to retrieve the string from c to c#. Thanks.

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  • Test if a method is an override?

    - by Water Cooler v2
    Is there a way to tell if a method is an override? For e.g. public class Foo { public virtual void DoSomething() {} public virtual int GimmeIntPleez() { return 0; } } public class BabyFoo: Foo { public override int GimmeIntPleez() { return -1; } } Is it possible to reflect on BabyFoo and tell if GimmeIntPleez is an override?

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  • Ternary operators in C#

    - by pm_2
    With the ternary operator, it is possible to do something like the following (assuming Func1() and Func2() return an int: int x = (x == y) ? Func1() : Func2(); However, is there any way to do the same thing, without returning a value? For example, something like (assuming Func1() and Func2() return void): (x == y) ? Func1() : Func2(); I realise this could be accomplished using an if statement, I just wondered if there was a way to do it like this.

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  • C++: Unitialized variables garbage

    - by Hardware Problem
    int myInt; cout << myInt; // Garbage like 429948, etc If I output and/or work with unitialized variables in C++, what are their assumed values? Actual values in the memory from the "last user"? e.g.: Program A is closed, it had an int with the value 1234 at 0x1234 - I run my program, myInt gets the address 0x1234, I output it like above - 1234 Is it just random garbage?

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  • NZEC in spoj FACKT

    - by frodo
    I was trying to solve this problem http://www.spoj.pl/problems/FACKT/, and I keep getting a Non-Zero Exit Code (NZEC). How exactly do I figure out what to change in the code to overcome this? Here is the code import math import sys def cal_num(n): i = 1 f = 1 while f<n: f *= i i = i + 1 return i-1 while 1: line = sys.stdin.readline() if line == "": break n = int(line) x = cal_num(n) y = math.factorial(2*x) l = int(math.ceil(math.log(y,10))) print (x,l) Any suggestion would be welcome.

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  • please help me to solve problem

    - by davit-datuashvili
    hi everybody fisrt of all this is not homework and now question is like this suppose i have array int a[]=new int[]{0xBCDA,0xABFE,0xBCAD,0xEFCA,0xFFCA} i know that there is always some hexadecimal number which occurs in all number or in this case A is repeat in array everywhere so my aim is print only repeat number and other numbers should be zero so my new array should be like this 0x000A, 0xA000,0x00A0 0x000A,0x000A any idea please help me? p.s please nobody say that this is homework

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  • Static member class - declare class private and class member package-private?

    - by Helper Method
    Consider you have the following class public class OuterClass { ... private static class InnerClass { int foo; int bar; } } I think I've read somewhere (but not the official Java Tutorial) that if I would declare the static member classes attributes private, the compiler had to generate some sort of accessor methods so that the outer class can actually access the static member class's (which is effectively a package-private top level class) attributes. Any ideas on that?

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  • Strange issue with cout

    - by ben
    After reading from a text file, and storing it into a string, I tried to pass this message into another function that will print it out. This is what it looks like: http://imgur.com/MCjfRdp void insert (int id, string message){ cout << "Inserting " << message << " at" << endl; } Somehow the message behind the string overrides the message. But once I removed the " at" after message, it worked as expected. http://imgur.com/JdHPPmi void insert (int id, string message){ cout << "Inserting " << message << endl; } I somehow suspect the problem came from stringstream, but i couldn't find out where. Here's the code that read from file vector <string> line; fstream infile; string readLine, tempLine, action, tempLine1; int level, no; infile.open(fileName.c_str(),ios::in); int i = 0; while (!infile.eof()) { getline (infile, readLine); line.push_back(readLine); } infile.close(); line.pop_back(); for (int i = 0; i < line.size();i++) { stringstream ss (line.at(i)); getline (ss, action, ' '); if (action == "init") { // some other work here } else if (action == "insert") { tempLine = line.at(i); ss >> no; stringstream iline(tempLine); getline (iline, tempLine1, ' '); getline (iline, tempLine1, ' '); getline (iline, tempLine1, '\n'); Insert (no, tempLine1); } Since my file has different kinds of actions, here is what test.dat contains: insert 0 THIS IS A TEST edit: When i did file.txt, it came out as something like this. Inserting THIS IS A TEST at Inserting THIS IS TEST NO 2 at

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