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Transpose list of lists
...in args is a separate positional argument of f.
Coming back to the input from the question l = [[1, 2, 3], [4, 5, 6], [7, 8, 9]], zip(*l) would be equivalent to zip([1, 2, 3], [4, 5, 6], [7, 8, 9]). The rest is just making sure the result is a list of lists instead of a list of tuples.
...
Storing money in a decimal column - what precision and scale?
... a popular choice (a quick Google bears this out). I think this originates from the old VBA/Access/Jet Currency data type, being the first fixed point decimal type in the language; Decimal only came in 'version 1.0' style (i.e. not fully implemented) in VB6/VBA6/Jet 4.0.
The rule of thumb for stora...
Enable Vim Syntax Highlighting By Default
...bly don't have a
$HOME/.vimrc or $HOME/_vimrc (known collectively as vimrc from now on). In that case, you have two options:
Create an empty vimrc.
Copy vimrc_example.vim as your vimrc (recommended, thanks @oyenamit). You can find vimrc_example.vim in the runtime directory.
The location of the r...
How to get arguments with flags in Bash
...
This example uses Bash's built-in getopts command and is from the Google Shell Style Guide:
a_flag=''
b_flag=''
files=''
verbose='false'
print_usage() {
printf "Usage: ..."
}
while getopts 'abf:v' flag; do
case "${flag}" in
a) a_flag='true' ;;
b) b_flag='true' ;;
...
Rails: Open link in new tab (with 'link_to')
...king for how to open a link in a new tab within html (for anyone came here from Google), here:
<a href="http://www.facebook.com/mypage" target="_blank">Link name</a>
share
|
improve th...
What's the best way to store Phone number in Django models
...dling
https://github.com/stefanfoulis/django-phonenumber-field
In model:
from phonenumber_field.modelfields import PhoneNumberField
class Client(models.Model, Importable):
phone = PhoneNumberField(null=False, blank=False, unique=True)
In form:
from phonenumber_field.formfields import Phone...
How does IPython's magic %paste work?
...
I think it depends on the environment from which you are doing the pasting and how you are doing the pasting? My colleague is using Windows 10's command prompt to SSH into our Linux host, opens ipython in a Docker container there and tries to paste already-indent...
How can I use grep to find a word inside a folder?
...led just "files" in Windows).
grep -nr string reads the content to search from the standard input, that is why it just waits there for input from you, and stops doing so when you press ^C (it would stop on ^D as well, which is the key combination for end-of-file).
...
git: Show index diff in commit message as comment
...script to generate few addition lines in diff format, but it got truncated from the first line
– Dennis C
Apr 8 '13 at 0:58
2
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Ideal Ruby project structure
...
See the following example from http://guides.rubygems.org/what-is-a-gem/
% tree freewill
freewill/
├── bin/
│ └── freewill
├── lib/
│ └── freewill.rb
├── test/
│ └── test_f...