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What exactly does += do in python?
I need to know what += does in python. It's that simple. I also would appreciate links to definitions of other short hand tools in python.
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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...n the specification at the ToBoolean section.
Furthermore, if you do not know whether a variable exists (that means, if it was declared) you should check with the typeof operator. For instance
if( typeof foo !== 'undefined' ) {
// foo could get resolved and it's defined
}
If you can be sure ...
How can I strip first and last double quotes?
... I'd recommend handling strings that are 2 characters or less. Right now this function can throw an index out of bounds exception for a string of length 0. Additionally, you can strip a quote from a string that is 1 character long. You could add a guard, len(s) >= 2, or something similar.
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Change select box option background color
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I took away the rgba option and seems to use black now which will do :)
– ngplayground
Oct 11 '12 at 9:33
5
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Passing arrays as url parameter
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I have used this to put the url in the array but don't know how to get the data back. I tried parse_str and couldn't get it to work. I think this would be valuable information
– Thomas Williams
Sep 7 '16 at 12:37
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How do I use boolean variables in Perl?
...er than the right argument. Its not boolean but sometimes you may want to know if one argument ir equal or less than or greater than the other instead of just equal or not equal.
– user118435
Jun 24 '09 at 6:47
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Set variable in jinja
I would like to know how can I set a variable with another variable in jinja. I will explain, I have got a submenu and I would like show which link is active. I tried this:
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How do you detect the clearing of a “search” HTML5 input?
...s is especially useful because it understands the "incremental" attribute.
Now, having said that, I'm not sure if you can tell the difference between clicking the "x" and searching, unless you use an "onclick" hack. Either way, hopefully this helps.
References:
http://help.dottoro.com/ljdvxmhr.php
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How to define an empty object in PHP
...e creating a new one. The problem that needs fixing is that people should know what stdClass does.
– Pacerier
Mar 25 '15 at 5:04
2
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Rails and PostgreSQL: Role postgres does not exist
...eriod so I did a fresh install so I must have a couple of instance on here now. Changed the port in the database.yml file though and it all worked fine. Thanks for your help!
– Adam
Oct 23 '11 at 17:03
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