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How to write to file in Ruby?
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The Ruby File class will give you the ins and outs of ::new and ::open but its parent, the IO class, gets into the depth of #read and #write.
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Best way to alphanumeric check in JavaScript
...dation fails.
function validateCode(){
var TCode = document.getElementById('TCode').value;
if( /[^a-zA-Z0-9]/.test( TCode ) ) {
alert('Input is not alphanumeric');
return false;
}
return true;
}
If there's at least one match of a non alpha numeric, it will retu...
What is the function __construct used for?
... for a given class, it will search for the old-style constructor function, by the name of the class. Effectively, it means that the only case that would have compatibility issues is if the class had a method named __construct() which was used for different semantics. Warning: Old style constructor...
Batch file to copy files from one folder to another folder
...ore their active data on a server. Now that server is going to be replaced by a new one due to place problem so I need to copy sub folders files from the old server storage folder to new server storage folder. I have below ex:
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“var” or no “var” in JavaScript's “for-in” loop?
...eloper.mozilla.org/en/JavaScript/Reference/Statements/for...in
Basically, by using var you ensure that you create a new variable. Otherwise you might accidentally use a previously defined variable.
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Is it possible to change only the alpha of a rgba background colour on hover?
...ha of background. if you want light instead of darkness, just replace #000 by #fff
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Adding :default => true to boolean in existing Rails column
...ld just say show or whatever the column name is.
– labyrinth
Mar 6 '18 at 16:04
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How do I convert datetime to ISO 8601 in PHP
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Why does DEBUG=False setting make my django Static Files Access fail?
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Sounds interesting, but didn't work for me by just adding that line to the wgsi.py file. The documentation you linked seems to give other instructions for using WhiteNoise. Will try other ways and update you here.
– DarkCygnus
Ap...
Is there a good Valgrind substitute for Windows?
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Purify: venerable but still useful, as shown by how many changes of corporate ownership it has survived!
– Norman Ramsey
Jan 5 '09 at 17:48
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