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What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
...as in the "opt" directory)? I commonly see this directory in Unix systems with development tools inside.
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How to install PyQt4 on Windows using pip?
I'm using Python 3.4 on Windows. When I run a script, it complains
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Deleting Objects in JavaScript
I'm a bit confused with JavaScript's delete operator. Take the following piece of code:
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What is the difference between String.slice and String.substring?
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slice() works like substring() with a few different behaviors.
Syntax: string.slice(start, stop);
Syntax: string.substring(start, stop);
What they have in common:
If start equals stop: returns an empty string
If stop is omitted: extracts characters to ...
Why do you need to put #!/bin/bash at the beginning of a script file?
I have made Bash scripts before and they all ran fine without #!/bin/bash at the beginning.
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Centering a view in its superview using Visual Format Language
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Currently, no, it doesn't look like it is possible to center a view in the superview using only VFL. It is, however, not that difficult to do it using a single VFL string and a single extra constraint (per axis):
VFL: "|-(>=20)-[view]-(...
Best way to store JSON in an HTML attribute?
...d be any size (i.e. huge).
I've not seen any documentation on browser limits to attribute sizes.
If you do run into them, then store the data in a <script>. Define an object and map element ids to property names in that object.
What if the JSON contains special characters? (e.g. {test: ...
Where am I wrong about my project and these Javascript Frameworks?
...ge web app. I plan on having a set of features available from the get-go with plenty of feature additions down the road.
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isset() and empty() - what to use
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It depends what you are looking for, if you are just looking to see if it is empty just use empty as it checks whether it is set as well, if you want to know whether something is set or not use isset.
Empty checks if the var...
Python: split a list based on a condition?
...the best way, both aesthetically and from a performance perspective, to split a list of items into multiple lists based on a conditional? The equivalent of:
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