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How can a LEFT OUTER JOIN return more records than exist in the left table?
...e additional information from a much bigger table. The left table contains 4935 records yet when I LEFT OUTER JOIN it to an additional table the record count is significantly larger.
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Structure padding and packing
...l" address boundaries - say, int members would have offsets, which are mod(4) == 0 on 32-bit platform. Padding is on by default. It inserts the following "gaps" into your first structure:
struct mystruct_A {
char a;
char gap_0[3]; /* inserted by compiler: for alignment of b */
int b;
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git rebase without changing commit timestamps
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Update June 2014: David Fraser mentions in the comments a solution also detailed in "Change timestamps while rebasing git branch", using the option --committer-date-is-author-date (introduced initially in Jan. 2009 in commit 3f01ad6
Note t...
What's the difference between utf8_general_ci and utf8_unicode_ci?
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1646
These two collations are both for the UTF-8 character encoding. The differences are in how tex...
Get URL query string parameters
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534
$_SERVER['QUERY_STRING'] contains the data that you are looking for.
DOCUMENTATION
php.net:...
How can I read a function's signature including default argument values?
...e that inspect.getargspec() is deprecated since Python 3.0.
Python 3.0--3.4 recommends inspect.getfullargspec().
Python 3.5+ recommends inspect.signature().
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Add spaces before Capital Letters
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204
The regexes will work fine (I even voted up Martin Browns answer), but they are expensive (and p...
Any gotchas using unicode_literals in Python 2.6?
....name
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 4: ordinal not in range(128)
In this example, two.name is an utf-8 encoded string (not unicode) since it did not import unicode_literals, and one.name is an unicode string. When you mix both, python tries to decode the enco...
Why doesn't print work in a lambda?
...back-ported print function if you are using the latest Python 2.x:
In [1324]: from __future__ import print_function
In [1325]: f = lambda x: print(x)
In [1326]: f("HI")
HI
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How do I filter query objects by date range in Django?
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425
Use
Sample.objects.filter(date__range=["2011-01-01", "2011-01-31"])
Or if you are just try...