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What does the property “Nonatomic” mean?
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If you specify "atomic", the generated access functions have some extra code to guard against simultaneous updates.
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Instance variables vs. class variables in Python
...f time savings.
However, if you insist on class attributes, you need that extra lookup. Or, your other alternative is to refer to the object via the class instead of the instance, e.g., MyController.path instead of self.path. That's a direct lookup which will get around the deferred lookup, but as ...
Adjust list style image position?
...ullet.gif) no-repeat left top; /* <-- change `left` & `top` too for extra control */
padding: 3px 0px 3px 10px;
/* reset styles (optional): */
list-style: none;
margin: 0;
}
You might be looking to add styling to the parent list container (ul) to position your bulleted list items, t...
Aren't Python strings immutable? Then why does a + “ ” + b work?
My understanding was that Python strings are immutable.
22 Answers
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Using braces with dynamic variable names in PHP
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Overview
In PHP, you can just put an extra $ in front of a variable to make it a dynamic variable :
$$variableName = $value;
While I wouldn't recommend it, you could even chain this behavior :
$$$$$$$$DoNotTryThisAtHomeKids = $value;
You can but are not forced...
How to kill all processes matching a name?
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For extra strength, add -9 to the end!
– mlissner
Aug 5 '15 at 3:31
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Git add all files modified, deleted, and untracked?
...ively,
git add -A .
is equivalent to
git add .
git add -u .
Note the extra '.' on git add -A and git add -u
Warning: Starting with git 2.0 (mid 2013), this will always stage files on the whole working tree.
If you want to stage files under the current path of your working tree, you need to ...
Random string generation with upper case letters and digits
I want to generate a string of size N.
31 Answers
31
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Should I use tag for icons instead of ? [closed]
...ut no textual equivalent is available. Setting this attribute to the empty string indicates that this image is not a key part of the content; non-visual browsers may omit it from rendering."
– George Mauer
Jul 30 '15 at 17:37
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Get host domain from URL?
how to get host domain from a string URL?
9 Answers
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