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How to validate an email address in PHP

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Can PNG image transparency be preserved when using PHP's GDlib imagecopyresampled?

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Regex for string not ending with given suffix

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How do I schedule jobs in Jenkins?

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Index all *except* one item in python

.... For example, to make b a copy of a without the 3rd element: a = range(10)[::-1] # [9, 8, 7, 6, 5, 4, 3, 2, 1, 0] b = [x for i,x in enumerate(a) if i!=3] # [9, 8, 7, 5, 4, 3, 2, 1, 0] This is very general, and can be used with all iterables, including numpy arrays. If y...
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Numpy first occurrence of value greater than existing value

... 207 This is a little faster (and looks nicer) np.argmax(aa>5) Since argmax will stop at the f...
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How do I give text or an image a transparent background using CSS?

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In C++, is it still bad practice to return a vector from a function?

...arrays—in many programming languages. Is this style now acceptable in C++0x if the class has a move constructor, or do C++ programmers consider it weird/ugly/abomination? ...
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Compare double to zero using epsilon

...there is a 52-bit mantissa and 11-bit exponent. Let's break it to bits: 1.0000 00000000 00000000 00000000 00000000 00000000 00000000 × 2^0 = 1 The smallest representable number greater than 1: 1.0000 00000000 00000000 00000000 00000000 00000000 00000001 × 2^0 = 1 + 2^-52 Therefore: epsilon ...
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How can I easily view the contents of a datatable or dataview in the immediate window

...Set, expand the quick watch, view the Tables, expand that, then view Table[0] (for example). You will see something like {Table1} in the quick watch, but notice that there is also a magnifying glass icon. Click on that icon and your DataTable will open up in a grid view. ...