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JavaScript and Threads
...r qs = document.location.search.split('+').join(' ');
var params = {}, tokens, re = /[?&]?([^=]+)=([^&]*)/g;
while (tokens = re.exec(qs)) {
params[decodeURIComponent(tokens[1])] = decodeURIComponent(tokens[2]);
}
return params[paramName];
}
//The thread code (get the...
Difference between java.util.Random and java.security.SecureRandom
...team got handed over some server side code (in Java) that generates random tokens and I have a question regarding the same -
...
Quickly create a large file on a Linux system
... it is slow for this purpose. In Linux (and other POSIX systems), we have fallocate, which uses the desired space without having to actually writing to it, works with most modern disk based file systems, very fast:
For example:
fallocate -l 10G gentoo_root.img
...
Count the number of occurrences of a character in a string in Javascript
...bar".split("o").length-1
//>2
split not recommended. Resource hungry. Allocates new instances of 'Array' for each match. Don't try that for a >100MB file via FileReader. You can actually easily observe the EXACT resource usage using Chrome's profiler option.
3.
var stringsearch = "o"
,str...
RAII and smart pointers in C++
...ay to describe this limitation in Java or C# is because there is no way to allocate on the stack. C# allows stack allocation through a special keyword however, you lose type saftey.
– ApplePieIsGood
Dec 28 '08 at 14:25
...
Can “using” with more than one resource cause a resource leak?
...What happens if font4 = new Font() throws after the unmanaged resource was allocated by the constructor but before the ctor returns and fills in font4 with the reference?
Let me make that a little bit more clear. Suppose we have:
public sealed class Foo : IDisposable
{
private int handle = 0;...
What does $@ mean in a shell script?
... @Alfe I know;I just hat forgotten it. Think of it as for a in start_token "$@" end_token; do something_with "$a"; done :-)
– glglgl
Apr 3 '12 at 14:39
add a comment
...
What is a 'semantic predicate' in ANTLR?
... , 89");
NumbersLexer lexer = new NumbersLexer(in);
CommonTokenStream tokens = new CommonTokenStream(lexer);
NumbersParser parser = new NumbersParser(tokens);
parser.parse();
}
}
Test it by generating the lexer and parser, compiling all .java files and
running...
What is the difference between class and instance methods?
...hen be used like so:
[MyClass aClassMethod];
MyClass *object = [[MyClass alloc] init];
[object anInstanceMethod];
Some real world examples of class methods are the convenience methods on many Foundation classes like NSString's +stringWithFormat: or NSArray's +arrayWithArray:. An instance method...
What do 'lazy' and 'greedy' mean in the context of regular expressions?
...hortest possible substring. You would have to use either a tempered greedy token, or use non-regex approaches.
– Wiktor Stribiżew
Oct 15 '16 at 21:29
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