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How to read if a checkbox is checked in PHP?

...="value1"> After submitting the form you can check it with: isset($_POST['test']) or if ($_POST['test'] == 'value1') ... share | improve this answer | follow ...
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UICollectionView Set number of columns

...orCellWithReuseIdentifier: "Cell") } override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return 59 } override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICo...
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Comparing two NumPy arrays for equality, element-wise

... or simply want to be safe: use one of the specialized functions: np.array_equal(A,B) # test if same shape, same elements values np.array_equiv(A,B) # test if broadcastable shape, same elements values np.allclose(A,B,...) # test if same shape, elements have close enough values ...
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jQuery find events handlers registered with an object

...ta. Read this jQuery blog post. You should now use this instead: jQuery._data( elem, "events" ); elem should be an HTML Element, not a jQuery object, or selector. Please note, that this is an internal, 'private' structure, and shouldn't be modified. Use this for debugging purposes only. In o...
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How do I check if a number evaluates to infinity?

... if (result == Number.POSITIVE_INFINITY || result == Number.NEGATIVE_INFINITY) { // ... } You could possibly use the isFinite function instead, depending on how you want to treat NaN. isFinite returns false if your number is POSITIVE_INFINITY, NEGAT...
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Remove duplicate elements from array in Ruby

... Just another alternative if anyone cares. You can also use the to_set method of an array which converts the Array into a Set and by definition, set elements are unique. [1,2,3,4,5,5,5,6].to_set => [1,2,3,4,5,6] ...
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What's the difference between utf8_general_ci and utf8_unicode_ci?

Between utf8_general_ci and utf8_unicode_ci , are there any differences in terms of performance? 8 Answers ...
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Differences and relationship between glActiveTexture and glBindTexture

...ture unit". Each texture unit can have multiple texture targets (usually GL_TEXTURE_1D, 2D, 3D or CUBE_MAP). 4 Answers ...
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Structure padding and packing

...It inserts the following "gaps" into your first structure: struct mystruct_A { char a; char gap_0[3]; /* inserted by compiler: for alignment of b */ int b; char c; char gap_1[3]; /* -"-: for alignment of the whole struct in an array */ } x; Packing, on the other hand prevents ...
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Detect blocked popup in Chrome

...code I use for cross-browser detection, without the Chrome part. function _hasPopupBlocker(poppedWindow) { var result = false; try { if (typeof poppedWindow == 'undefined') { // Safari with popup blocker... leaves the popup window handle undefined result = t...