fredeerock

Stop all containers:

• docker ps -aq | xargs docker stop

Remove all containers:

• docker ps -aq | xargs docker rm

Remove all images:

• docker images -aq | xargs docker rmi

Remove all networks:

rushilgupta

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

ryerh

注意：本文内容适用于 Tmux 2.3 及以上的版本，但是绝大部分的特性低版本也都适用，鼠标支持、VI 模式、插件管理在低版本可能会与本文不兼容。

Tmux 快捷键 & 速查表 & 简明教程

启动新会话：

tmux [new -s 会话名 -n 窗口名]

恢复会话：

ace-subido

Requirements

1. HDP-2.2 installed by Ambari
2. Install HDFS Client
3. Patience

Instructions

Setup

garystafford

###############################################################################
# Helpful Docker commands and code snippets
###############################################################################

### CONTAINERS ###
docker stop $(docker ps -a -q) #stop ALL containers
docker rm -f $(docker ps -a -q) # remove ALL containers
docker rm -f $(sudo docker ps --before="container_id_here" -q) # can also filter

# exec into container

wdv4758h

Q objects

• The power of django's Q objects
• Dynamic Django queries (or why kwargs is your friend)
• https://docs.djangoproject.com/en/dev/ref/models/queries/#q-objects
• https://github.com/django/django/blob/master/django/db/models/query_utils.py
• https://docs.djangoproject.com/en/dev/topics/db/queries/
• help('django.db.models.query_utils.Q')

寫這篇的時候 Django 目前的版本是 1.6.5 & 1.7 RC1

hyle

// knockout 2.2.1

ko.utils.arrayFilter                            = function (array, predicate) { /* .. */ }

ko.utils.arrayFirst                             = function (array, predicate, predicateOwner) { /* .. */ }

ko.utils.arrayForEach                           = function (array, action) { /* .. */ }

ko.utils.arrayGetDistinctValues                 = function (array) { /* .. */ }