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Efficient way to rotate a list in python
...method.
from collections import deque
items = deque([1, 2])
items.append(3) # deque == [1, 2, 3]
items.rotate(1) # The deque is now: [3, 1, 2]
items.rotate(-1) # Returns deque to original state: [1, 2, 3]
item = items.popleft() # deque == [2, 3]
...
In Jinja2, how do you test if a variable is undefined?
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345
From the Jinja2 template designer documentation:
{% if variable is defined %}
value of va...
How to get UTC time in Python?
... duration.
Equivalent to (td.microseconds + (td.seconds + td.days * 24 * 3600) *
10*6) / 10*6 computed with true division enabled.
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Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...IP4.DNS'
IP4.DNS[1]: 10.0.0.2
IP4.DNS[2]: 10.0.0.3
Using these addresses, create a file /etc/docker/daemon.json:
$ sudo su root
# cd /etc/docker
# touch daemon.json
Put this in /etc/docker/daemon.json:
{ ...
Inconsistent accessibility: property type is less accessible
...
3 Answers
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How to filter out files by extension in NERDTree?
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301
You want the NERDTreeIgnore option. For example, in your .vimrc:
let NERDTreeIgnore = ['\.pyc...
How exactly does a generator comprehension work?
...s each item out of the expression, one by one.
>>> my_list = [1, 3, 5, 9, 2, 6]
>>> filtered_list = [item for item in my_list if item > 3]
>>> print(filtered_list)
[5, 9, 6]
>>> len(filtered_list)
3
>>> # compare to generator expression
...
>>&...
How do I create a class instance from a string name in ruby?
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223
In rails you can just do:
clazz = 'ExampleClass'.constantize
In pure ruby:
clazz = Object.co...
In git, is there a way to show untracked stashed files without applying the stash?
...ut is pretty obvious from The commit which introduced the -u feature, 787513..., and the way the rest of the documentation for git-stash phrases things... or just by doing git log --graph stash@{0})
You can view just the "untracked" portion of the stash via:
git show stash@{0}^3
or, just the "un...
jQuery slideUp().remove() doesn't seem to show the slideUp animation before remove occurs
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edited Nov 21 '08 at 7:38
Owen
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