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How to validate an email address in PHP
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How is this fibonacci-function memoized?
...is asked for again. If we define some list, xs=[0..] and later ask for its 100th element, xs!!99, the 100th slot in the list gets "fleshed out", holding the number 99 now, ready for next access.
That is what that trick, "going-through-a-list", is exploiting. In normal doubly-recursve Fibonacci def...
Evaluate expression given as a string
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The eval() function evaluates an expression, but "5+5" is a string, not an expression. Use parse...
Which is a better way to check if an array has more than one element?
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ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
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comparing 2 strings alphabetically for sorting purposes
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Lets look at some test cases - try running the following expressions in your JS console:
"a" ...
Get the correct week number of a given date
...t of solutions, but none of them give me the correct week number for the 2012-12-31. Even the example on MSDN ( link ) fails.
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How to reset Android Studio
I want to reset Android Studio 0.2.13 to the default state. That means reset all settings, remove all projects, all gradle files so that it would act like a fresh installation. What steps do I have to follow to achieve this?
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pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible
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Why does struct alignment depend on whether a field type is primitive or user-defined?
...t = new RefAndTwoInt32Wrappers();
test.text = "adsf";
test.x.x = 0x11111111;
test.y.x = 0x22222222;
Console.ReadLine(); // <=== Breakpoint here
When the breakpoint hits, use Debug + Windows + Memory + Memory 1. Switch to 4-byte integers and put &test in the Address fie...