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What is stability in sorting algorithms and why is it important?
...nd/or memory usage than unstable algorithms. So when you have a large data set, you have to pick between beating up the CPU or the memory. If you're constrained on both CPU and memory, you have a problem. A good compromise stable algorithm is a binary tree sort; the Wikipedia article has a pathetica...
C# : 'is' keyword and checking for Not
...
The way you have it is fine but you could create a set of extension methods to make "a more elegant way to check for the 'NOT' instance."
public static bool Is<T>(this object myObject)
{
return (myObject is T);
}
public static bool IsNot<T>(this object myObj...
Core dump file analysis [duplicate]
What are all the things I will need to check while analyzing a core dump file?
2 Answers
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Round a double to 2 decimal places [duplicate]
...ntException();
BigDecimal bd = BigDecimal.valueOf(value);
bd = bd.setScale(places, RoundingMode.HALF_UP);
return bd.doubleValue();
}
Note that HALF_UP is the rounding mode "commonly taught at school". Peruse the RoundingMode documentation, if you suspect you need something else such a...
Generating random numbers in Objective-C
...m() function. It uses a superior algorithm to rand. You don't even need to set a seed.
#include <stdlib.h>
// ...
// ...
int r = arc4random_uniform(74);
The arc4random man page:
NAME
arc4random, arc4random_stir, arc4random_addrandom -- arc4 random number generator
LIBRARY
Stand...
Fast stable sorting algorithm implementation in javascript
I'm looking to sort an array of about 200-300 objects, sorting on a specific key and a given order (asc/desc). The order of results must be consistent and stable.
...
Sending an HTTP POST request on iOS
...by POST method)
Here, I describe how one can use of POST method.
1. Set post string with actual username and password.
NSString *post = [NSString stringWithFormat:@"Username=%@&Password=%@",@"username",@"password"];
2. Encode the post string using NSASCIIStringEncoding and also the po...
How to initialize const member variable in a class?
When I am trying to initialize the const member variable t with 100. But it's giving me the following error:
11 Answers
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Java regex capturing groups indexes
...ule stated above.
In some regex flavors (PCRE, Perl), there is a branch reset feature which allows you to use the same number for capturing groups in different branches of alternation.
Group name
From Java 7, you can define a named capturing group (?<name>pattern), and you can access the co...
Adjust UILabel height depending on the text
...ple lines, all the time, hence the numberOfLines = 0; I guess it's missing setting the preffered width first, but I assumed that had already been done with the init of the UILabel.
– DonnaLea
Jul 6 '11 at 1:42
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