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Error: “Cannot modify the return value” c#
...erty you're accessing a copy of the value held by the class, not the value itself as you would with a reference type (class), so if you set the X property on it then you're setting the property on the copy and then discarding it, leaving the original value unchanged. This probably isn't what you int...
C/C++ include header file order
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I don't think there's a recommended order, as long as it compiles! What's annoying is when some headers require other headers to be included first... That's a problem with the headers themselves, not with the order of includes.
My personal preference is to go from local to glob...
Creating a new DOM element from an HTML string using built-in DOM methods or Prototype
...representing an element: '<li>text</li>' . I'd like to append it to an element in the DOM (a ul in my case). How can I do this with Prototype or with DOM methods?
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How to kill a child process after a given timeout in Bash?
...ches a child process that crashes (actually, hangs) from time to time and with no apparent reason (closed source, so there isn't much I can do about it). As a result, I would like to be able to launch this process for a given amount of time, and kill it if it did not return successfully after a give...
What is the best way to stop people hacking the PHP-based highscore table of a Flash game
I'm talking about an action game with no upper score limit and no way to verify the score on the server by replaying moves etc.
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What does the exclamation mark do before the function?
..., when we add the seemingly innocuous exclamation mark: !function foo() {} it turns it into an expression. It is now a function expression.
The ! alone doesn't invoke the function, of course, but we can now put () at the end: !function foo() {}() which has higher precedence than ! and instantly cal...
Double not (!!) operator in PHP
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It's not the "double not operator", it's the not operator applied twice. The right ! will result in a boolean, regardless of the operand. Then the left ! will negate that boolean.
This means that for any true value (numbers...
Please explain some of Paul Graham's points on Lisp
...list seem the most interesting and still relevant now.
To understand them, it is useful to have a clear picture of what happens with Lisp code -- in the form of a stream of characters typed in by the programmer -- on its way to being executed. Let's use a concrete example:
;; a library import for co...
delete vs delete[] operators in C++
...r deallocates memory and calls the destructor for a single object created with new.
The delete [] operator deallocates memory and calls destructors for an array of objects created with new [].
Using delete on a pointer returned by new [] or delete [] on a pointer returned by new results in undefin...
Tab Vs Space preferences in Vim
Vim is very accommodating when it comes to tab Vs. space preferences. As I understand it, the tabstop setting indicates the width of a tab character. The shiftwidth setting specifies how many columns to increment/decrement when using the << and >> commands, whereas the softtabst...