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How to check if a string array contains one string in JavaScript? [duplicate]
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There is an indexOf method that all arrays have (except Internet Explorer 8 and below) that will return the index of an element in the array, or -1 if it's not in the array:
if (yourArray.indexOf("someString") > -1) {
//In the array!
} else {
//...
How to check if hex color is “too black”?
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You have to extract the three RGB components individually, and then use a standard formula to convert the resulting RGB values into their perceived brightness.
Assuming a six character colour:
var c = c.substring(1); // strip #
var rgb = parseInt(c, 16); // convert rrg...
App Inventor 2 手机AI伴侣进行测试时，为啥进度条卡在10%就一直不动？ - A...
...以体验试试{:8_378:}。原理详见：https://bbs.tsingfun.com/forum.php?mod=viewthread&tid=1411
Collection that allows only unique items in .NET?
...at contains no duplicate elements, and whose elements are in no particular order.
Note that the HashSet<T>.Add(T item) method returns a bool -- true if the item was added to the collection; false if the item was already present.
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Getters \ setters for dummies
...examples, the internal property names are abstracted with an underscore in order to discourage users from simply doing foo.bar vs. foo.get( 'bar' ) and getting an "uncooked" value. You can use conditional code to do different things depending on the name of the property being accessed (via the name ...
Convert a Unix timestamp to time in JavaScript
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Actually it will display time in '10:2:2' format, since it does not add an extra 0 before values below 10.
– Fireblaze
Oct 4 '12 at 14:47
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Converting newline formatting from Mac to Windows
... OSX uses older version of sed. I use Homebrew for OSX, and installed gnu-sed. You use with the "gsed" command instead of "sed". That works.
– John
Nov 11 '13 at 23:01
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Get ffmpeg information in friendly way
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If anyone ever need, I've written a PHP solution based on that answer: stackoverflow.com/questions/11805207/…
– Paulo Freitas
Aug 5 '12 at 11:33
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Relative imports in Python 3
...Path(__file__).resolve())
I'm including these two lines only to make the order of operations obvious. We can ignore them completely, since they don't affect the execution.
__init__.py and module.py contain only those two lines (i.e., they are effectively empty).
standalone.py additionally attemp...
How to transform array to comma separated words string? [duplicate]
...ode(",", $array);
echo $comma_separated; // lastname,email,phone
http://php.net/manual/en/function.implode.php
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