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Safely override C++ virtual functions
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20
Something like C#'s override keyword is not part of C++.
In gcc, -Woverloaded-virtual warns ag...
Pad a number with leading zeros in JavaScript [duplicate]
...ength)}
– Gui Weinmann
Jun 1 '16 at 20:55
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show 11 more comments
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I need an unordered list without any bullets
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jul 11 '13 at 15:05
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How do I connect to a MySQL Database in Python?
...page says "Python 3 support coming soon" but it has not been updated since 2012-10-08. For Python 3 there's PyMySQL and oursql.
– paul
May 9 '13 at 3:07
8
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How do I deep copy a DateTime object?
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answered Feb 10 '15 at 20:37
Alexander GardenAlexander Garden
3,63333 gold badges2727 silver badges2222 bronze badges
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Is it better to reuse a StringBuilder in a loop?
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answered Jun 22 '09 at 6:20
Dave JarvisDave Jarvis
27.6k3535 gold badges157157 silver badges281281 bronze badges
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UPDATE multiple tables in MySQL using LEFT JOIN
...-+------+--------------+
| B-num| date | A-num |
| 22 | 01.08.2003 | 2 |
| 23 | 02.08.2003 | 2 |
| 24 | 03.08.2003 | 1 |
| 25 | 04.08.2003 | 4 |
| 26 | 05.03.2003 | 4 |
I will update field text in table A with
UPDATE `Table A`,`Table B`
SET...
Why do I get “unresolved external symbol” errors when using templates? [duplicate]
...e's source file as
"inline" (Update: [this does not work on Visual Studio 2017+]), or
define the member
functions in the template's source
with the "export" keyword.
Unfortunately this isn't supported
by a lot of compilers. (Update: this has been removed from the standard as of C++11.)
Both 1 an...
FFMPEG (libx264) “height not divisible by 2”
...t; it didn't care about the video size. Then I needed to convert it to yuv420p, and then it cared about the video size. I looked up yuv420p on wikipedia, I think it's a multi-pixel color format, that needs the image to be a specific size. Not sure why it matters compressed, though.
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Why dict.get(key) instead of dict[key]?
...timeit("getway({i:i for i in range(100)})","from __main__ import getway"))
20.2124660015
>>> print(timeit.timeit("lookup({i:i for i in range(100)})","from __main__ import lookup"))
16.16223979
As we can see the lookup is faster than the get as there is no function lookup. This can be seen...