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When to use static vs instantiated classes
...cally use objects when working with unique things like a photo, user, post etc and use static when its meant for general things?
– Robert Rocha
Apr 2 '16 at 21:29
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How to raise a ValueError?
...t(contains('bababa', 'k')) # ->
Traceback (most recent call last):
File "how-to-raise-a-valueerror.py", line 15, in <module>
print(contains('bababa', 'k'))
File "how-to-raise-a-valueerror.py", line 12, in contains
raise ValueError('could not find {} in {}'.format(char, char_s...
How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
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Upgrade Genymotion and VirtualBox to the latest version.
Download two zip files:
- ARM Translation Installer v1.1
- Google Apps for your Android version: 2.3.7 - 4.4.4 or 4.4 - 6.0 (with platform and variant) You can also find the GApps list in the wbroek user GitHubGist page.
Open Genymotion emu...
How to get only the last part of a path in Python?
...gt;>> path.name
'folderD'
If you want the last folder name where a file is located:
>>> path = pathlib.PurePath('/folderA/folderB/folderC/folderD/file.py')
>>> path.parent.name
'folderD'
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clang error: unknown argument: '-mno-fused-madd' (python package installation failure)
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To Sean: On my Mac I have ~/.bash_profile not bashrc, but this would need you to restart the shell to take effect.
– peterjc
Mar 12 '14 at 10:00
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Assigning a variable NaN in python without numpy
...Fraction
>>> Fraction('nan')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python35\lib\fractions.py", line 146, in __new__
numerator)
ValueError: Invalid literal for Fraction: 'nan'
>>>
>>> Fraction(float('nan'))
Trace...
PHP convert XML to JSON
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<?php
class XmlToJson {
public function Parse ($url) {
$fileContents= file_get_contents($url);
$fileContents = str_replace(array("\n", "\r", "\t"), '', $fileContents);
$fileContents = trim(str_replace('"', "'", $fileContents));
$simpleXml = simplexml_load_s...
Git diff against a stash
...an use:
git diff --name-only stash@{0} master
To easy find only changed file names.
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What is the theoretical maximum number of open TCP connections that a modern Linux box can have
...fields are used as a compound key to match up packets to connections (e.g. file descriptors).
If a client has many connections to the same port on the same destination, then three of those fields will be the same - only source_port varies to differentiate the different connections. Ports are 16-bit...
Good examples of Not a Functor/Functor/Applicative/Monad?
...u've destroyed its value. This is why its not an instance of Enum, Monoid, etc. If you already have one, I'm happy to let you mash them together (giving you a Semigroup) but mempty, but I give no tools for explicitly constructing a value of type Void in void. You have to load the gun and point it at...