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@jgomezdans
jgomezdans / random.py
Created May 15, 2010 23:24
Random colormap for matplotli
import matplotlib,numpy
import pylab
# A random colormap for matplotlib
cmap = matplotlib.colors.ListedColormap ( numpy.random.rand ( 256,3))
pylab.imshow ( Z, cmap = cmap)
pylab.show()
@turicas
turicas / example_image_utils.py
Created December 10, 2011 19:04
Layer on top of Python Imaging Library (PIL) to write text in images easily
#!/usr/bin/env python
# coding: utf-8
# You need PIL <http://www.pythonware.com/products/pil/> to run this script
# Download unifont.ttf from <http://unifoundry.com/unifont.html> (or use
# any TTF you have)
# Copyright 2011 Álvaro Justen [alvarojusten at gmail dot com]
# License: GPL <http://www.gnu.org/copyleft/gpl.html>
from image_utils import ImageText
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active April 15, 2025 08:03
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@JunichiIto
JunichiIto / alias_matchers.md
Last active March 27, 2025 14:04
List of alias matchers in RSpec 3

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher aliased to description
a_truthy_value be_truthy a truthy value
a_falsey_value be_falsey a falsey value
be_falsy be_falsey be falsy
a_falsy_value be_falsey a falsy value
@viperwarp
viperwarp / ReactNativeJson.java
Created February 24, 2016 03:02
React-Native Module, ReadableMap/Array to Java JSON objects
private static WritableMap convertJsonToMap(JSONObject jsonObject) throws JSONException {
WritableMap map = new WritableNativeMap();
Iterator<String> iterator = jsonObject.keys();
while (iterator.hasNext()) {
String key = iterator.next();
Object value = jsonObject.get(key);
if (value instanceof JSONObject) {
map.putMap(key, convertJsonToMap((JSONObject) value));
} else if (value instanceof JSONArray) {
@jaronkk
jaronkk / cleanup_docker.sh
Created June 2, 2016 14:11
Cleanup and reset docker on Jenkins workers / slaves
#!/bin/bash
# This script should be located on each Jenkins slave, and the jenkins user should have permission to run it with sudo
# Attempts to cleanly stop and remove all containers, volumes and images.
docker ps -q | xargs --no-run-if-empty docker stop
docker ps -q -a | xargs --no-run-if-empty docker rm --force --volumes
docker volume ls -q | xargs --no-run-if-empty docker volume rm
docker images -a -q | xargs --no-run-if-empty docker rmi -f
# Stops the docker service, unmounts all docker-related mounts, removes the entire docker directory, and starts docker again.
@hynek
hynek / gunicorn_callbacks_for_worker_id.py
Last active October 24, 2024 13:27
This is an attempt to emulate uWSGI’s uwsgi.worker_id() that ensures that I have worker IDs from 1…--workers which is useful in logging and instrumentation where changing PIDs are annoying.
import os
def on_starting(server):
"""
Attach a set of IDs that can be temporarily re-used.
Used on reloads when each worker exists twice.
"""
server._worker_id_overload = set()
@indigoviolet
indigoviolet / postgres_queries_and_commands.sql
Created November 15, 2016 00:26 — forked from rgreenjr/postgres_queries_and_commands.sql
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(query_start, clock_timestamp()), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(query_start, clock_timestamp()), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@mfmendiola
mfmendiola / ArrayUtil.java
Last active April 5, 2023 19:10
ReadableArray and ReadableMap serialization helpers for the React Native—Android bridge.
/*
ArrayUtil exposes a set of helper methods for working with
ReadableArray (by React Native), Object[], and JSONArray.
MIT License
Copyright (c) 2020 Marc Mendiola
Permission is hereby granted, free of charge, to any person obtaining a copy
@palkan
palkan / Gemfile
Last active April 25, 2024 14:23
RSpec profiling with RubyProf and StackProf
gem 'stackprof', require: false
gem 'ruby-prof', require: false