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Why does a base64 encoded string have an = sign at the end
...
It's padding. From http://en.wikipedia.org/wiki/Base64:
In theory, the padding character is not needed for decoding, since the
number of missing bytes can be calculated from the number of Base64
digits. In some implementations, the padd...
How to select the nth row in a SQL database table?
...of doing it.
A really good site that talks about this and other things is http://troels.arvin.dk/db/rdbms/#select-limit.
Basically, PostgreSQL and MySQL supports the non-standard:
SELECT...
LIMIT y OFFSET x
Oracle, DB2 and MSSQL supports the standard windowing functions:
SELECT * FROM (
SEL...
Make install, but not to default directories?
...IB=/home/my/local/lib
make
make test
make install
* further explanation: https://www.perlmonks.org/?node_id=564720
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PHP Replace last occurrence of a String in a String?
.... $replace . '$2', $subject, 1);
}
UPDATE Slightly more concise version (http://ideone.com/B8i4o):
function str_lreplace($search, $replace, $subject)
{
return preg_replace('~(.*)' . preg_quote($search, '~') . '~', '$1' . $replace, $subject, 1);
}
...
Android: Generate random color on click?
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I met this and this is my code,May some help
/**
* view-source:http://www.kareno.org/js/colors/ 参考
*Get Random background color and the text color for the background
* @return 0--》background
* 1--》text color
*/
public static int[] getRandomColor() {
Random rando...
Convert an NSURL to an NSString
...eUploader: {
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 46.2665 7.94324 4...
Change the color of glyphicons to blue in some- but not at all places using Bootstrap 2
...override the styles with css to change the color and size.
<link href="http://netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet">
CSS
.brown{color:#9b846b}
If we want change the color of icon then just add brown class and icon will turn in brown color. It a...
How to increase timeout for a single test case in mocha
...
Here you go: http://mochajs.org/#test-level
it('accesses the network', function(done){
this.timeout(500);
[Put network code here, with done() in the callback]
})
For arrow function use as follows:
it('accesses the network', (done)...
How to format date in angularjs
...st trying to use it's formatter), those supported format strings are here: https://api.jqueryui.com/datepicker/
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Regular expression to match numbers with or without commas and decimals in text
... at the beginning to make sure the whole thing wasn't blank.
Tested here: http://rextester.com/YPG96786
This will allow things like:
100,000
999.999
90.0009
1,000,023.999
0.111
.111
0
It will block things like:
1,1,1.111
000,001.111
999.
0.
111.110000
1.1.1.111
9.909,888
There are several ways to...