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Should I use 'has_key()' or 'in' on Python dicts?
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in is definitely more pythonic.
In fact has_key() was removed in Python 3.x.
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In Django, how do I check if a user is in a certain group?
...hen user.groups.all() returns [<Group: Editor>].
Alternatively, and more directly, you can check if a a user is in a group by:
if django_user.groups.filter(name = groupname).exists():
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Note that groupname can also be the actual Django Group object.
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Placing border inside of div and not on its edge
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+1. For a little more background: css-tricks.com/box-sizing or paulirish.com/2012/box-sizing-border-box-ftw
– isotrope
Mar 7 '12 at 14:00
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How do I ignore files in a directory in Git?
...ample, /*.c matches cat-file.c but not mozilla-sha1/sha1.c.
You can find more here
git help gitignore
or
man gitignore
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What is the difference between string primitives and String objects in JavaScript?
...r s = 'test';
Is a primitive data type. It has no methods, it is nothing more than a pointer to a raw data memory reference, which explains the much faster random access speed.
So what happens when you do s.charAt(i) for instance?
Since s is not an instance of String, JavaScript will auto-box s,...
When should I use double instead of decimal?
...es quite well. You are however missing one point. The decimal type is only more accurate at representing base 10 numbers (e.g. those used in currency/financial calculations). In general, the double type is going to offer at least as great precision (someone correct me if I'm wrong) and definitely g...
What's the difference between a Future and a Promise?
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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
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Installing PDO driver on MySQL Linux server
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maxlength ignored for input type=“number” in Chrome
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