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@gruber
gruber / Liberal Regex Pattern for Web URLs
Last active April 22, 2024 19:02
Liberal, Accurate Regex Pattern for Matching Web URLs
The regex patterns in this gist are intended only to match web URLs -- http,
https, and naked domains like "example.com". For a pattern that attempts to
match all URLs, regardless of protocol, see: https://gist.github.com/gruber/249502
# Single-line version:
(?i)\b((?:https?:(?:/{1,3}|[a-z0-9%])|[a-z0-9.\-]+[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|s
@hest
hest / gist:8798884
Created February 4, 2014 06:08
Fast SQLAlchemy counting (avoid query.count() subquery)
def get_count(q):
count_q = q.statement.with_only_columns([func.count()]).order_by(None)
count = q.session.execute(count_q).scalar()
return count
q = session.query(TestModel).filter(...).order_by(...)
# Slow: SELECT COUNT(*) FROM (SELECT ... FROM TestModel WHERE ...) ...
print q.count()
@gitaarik
gitaarik / git_submodules.md
Last active April 27, 2024 17:22
Git Submodules basic explanation

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of usecases of submodules:

  • Separate big codebases into multiple repositories.
@nicolasramy
nicolasramy / pip.sh
Created January 30, 2014 00:20
Simple bash_completion file: pip, venv-* functions. (venv-functions details: https://gist.github.com/nicolasramy/6438236#file-bash_functions_python)
#!/bin/sh
_pip_completion() {
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}"
first="${COMP_WORDS[0]}"
commands=$($first --help | awk '/Commands\:/,/General Options\:/' | \
\grep -E -o "^\s{2}\w*" | tr -d ' ')
opts=$($first --help | \grep -E -o "((-\w{1}|--(\w|-)*=?)){1,2}")
@DavidBruant
DavidBruant / gist:8519103
Last active June 3, 2018 22:08
Guide pratique à destination des preneurs de décisions pour faire des applications partagées pérennes disponibles sur une majorité de plateformes

Problème

Créer des applications partagées pérennes qui peuvent être déployées à grande échelle.

Partagées signifie que différents utilisateurs vont pouvoir interagir et "travailler" ensemble sur l'application

Grande échelle, en 2013, signifie que des dizaines à des millions de personnes peuvent utiliser l'application. Une majorité de plateforme doit être accessibles (ordis de bureaux, portables, tablettes, téléphones mobiles) de préférence à moindre coût et donc sans avoir à tout refaire pour chaque appareil. Vivant dans un monde régit par certaines lois physiques, il sera raisonnable de supposer que le réseau de communication est au pire ouvert. La sécurité de l'application ne devra pas supposer le contrôle du réseau, même dans si l'environnement de déploiement est considéré contrôlé.

Pérennes signifie que l'arrivée de nouveaux appareils sur le marché ne remet pas en cause plus de 1% du temps de développement. Personne ne peut prévoir le futur ; il conviendra de garder un œil ouvert sur les ten

@debasishg
debasishg / gist:8172796
Last active March 15, 2024 15:05
A collection of links for streaming algorithms and data structures

General Background and Overview

  1. Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
  2. Models and Issues in Data Stream Systems
  3. Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
  4. Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
  5. [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t
@wsargent
wsargent / docker_cheat.md
Last active August 31, 2023 12:10
Docker cheat sheet
@sloria
sloria / bobp-python.md
Last active April 29, 2024 17:14
A "Best of the Best Practices" (BOBP) guide to developing in Python.

The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

  • "Build tools for others that you want to be built for you." - Kenneth Reitz
  • "Simplicity is alway better than functionality." - Pieter Hintjens
@17twenty
17twenty / simple_git.md
Created September 27, 2013 18:32
A Simple Git branching model

a simple git branching model

This is a very simple git workflow. It (and variants) is in use by many people. I settled on it after using it very effectively at Athena. GitHub does something similar; Zach Holman mentioned it in this talk.

The gist

@jbenet
jbenet / simple-git-branching-model.md
Last active April 9, 2024 03:31
a simple git branching model

a simple git branching model (written in 2013)

This is a very simple git workflow. It (and variants) is in use by many people. I settled on it after using it very effectively at Athena. GitHub does something similar; Zach Holman mentioned it in this talk.

Update: Woah, thanks for all the attention. Didn't expect this simple rant to get popular.