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How expensive is RTTI?
..., on many platforms (Linux, BSD and maybe embedded platforms, but not mingw32). If you know you'll always be on a blessed platform, RTTI is very close to free.
Gritty details:
GCC prefers to use a particular "vendor-neutral" C++ ABI[1], and always uses this ABI for Linux and BSD targets[2]. For pl...
How to change the Eclipse default workspace?
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321
If you mean "change workspace" go to File -> Switch Workspace
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Javascript Regex: How to put a variable inside a regular expression?
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To build a regular expression from a variable in JavaScript, you'll need to use the RegExp cons...
How to pick a new color for each plotted line within a figure in matplotlib?
...red Apr 12 '19 at 13:08
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Maximum MIMEType Length when storing type in DB
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edited Nov 8 '17 at 9:32
answered Mar 13 '09 at 17:28
a...
What is float in Java?
...ble. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a double, the conversion cannot be performed implicitly.
If you want to create a float, you should end your number with f (i.e.: 3.6f).
For more exp...
Python - Create a list with initial capacity
...ook 118.00003051757812 ms
prealloc_array_by_extending took 102.99992561340332 ms
prealloc_array took 3.000020980834961 ms
prealloc_array took 49.00002479553223 ms
prealloc_array took 316.9999122619629 ms
prealloc_array took 473.00004959106445 ms
prealloc_array took 1677.9999732971191 ms
prealloc_arr...
What's the correct way to convert bytes to a hex string in Python 3?
...venient transformations like quoted-printable (fits into 7bits ascii), base64 (fits into alphanumerics), hex escaping, gzip and bz2 compression. In Python 2, you could do:
b'foo'.encode('hex')
In Python 3, str.encode / bytes.decode are strictly for bytes<->str conversions. Instead, you can...
Import file size limit in PHPMyAdmin
...pen this file
edit these parameters:
memory_limit =128M
post_max_size = 64M
upload_max_filesize = 64M
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TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
... 255 (2 8−1) bytes
TEXT | 65,535 (216−1) bytes = 64 KiB
MEDIUMTEXT | 16,777,215 (224−1) bytes = 16 MiB
LONGTEXT | 4,294,967,295 (232−1) bytes = 4 GiB
Note that the number of characters that can be stored in your column will depend on the character encoding.
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