sponia-joker

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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sponia-joker

npm set registry https://registry.npm.taobao.org # 注册模块镜像
npm set disturl https://npm.taobao.org/dist # node-gyp 编译依赖的 node 源码镜像

## 以下选择添加
npm set chromedriver_cdnurl http://cdn.npm.taobao.org/dist/chromedriver # chromedriver 二进制包镜像
npm set operadriver_cdnurl http://cdn.npm.taobao.org/dist/operadriver # operadriver 二进制包镜像
npm set phantomjs_cdnurl http://cdn.npm.taobao.org/dist/phantomjs # phantomjs 二进制包镜像
npm set sass_binary_site http://cdn.npm.taobao.org/dist/node-sass # node-sass 二进制包镜像
npm set electron_mirror http://cdn.npm.taobao.org/dist/electron/ # electron 二进制包镜像

sponia-joker

To change a field name in django 1.7+

1.  Edit the field name in the model (but remember the old field name: you need it for step 3!)
2.  Create an empty migration
$ python manage.py makemigrations --empty myApp
3.  Edit the empty migration (it's in the migrations folder in your app folder, and will be the most recent migration) by adding

migrations.RenameField('MyModel', 'old_field_name', 'new_field_name'),

to the operations list.