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var countries_data = {"type":"FeatureCollection","features":[
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[74.92,37.24],[74.57,37.03],[72.56,36.82],[71.24,36.13],[71.65,35.42],[71.08,34.06],[69.91,34.04],[70.33,33.33],[69.51,33.03],[69.33,31.94],[66.72,31.21],[66.26,29.85],[62.48,29.41],[60.87,29.86],[61.85,31.02],[60.84,31.5],[60.58,33.07],[60.94,33.52],[60.51,34.14],[61.28,35.61],[62.72,35.25],[63.12,35.86],[64.5,36.28],[64.8,37.12],[66.54,37.37],[67.78,37.19],[69.32,37.12],[70.97,38.47],[71.59,37.9],[71.68,36.68],[73.31,37.46],[74.92,37.24]]]]},"properties":{"name":"Afghanistan"},"id":"AF"},
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[19.44,41.02],[19.37,41.85],[19.65,42.62],[20.07,42.56],[20.59,41.88],[20.82,40.91],[20.98,40.86],[20.01,39.69],[19.29,40.42],[19.44,41.02]]]]},"properties":{"name":"Albania"},"id":"AL"},
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[2.96,36.8],[8.62,36.94],[8.18,36.52],[8.25,34.64],[7.49,33.89],[9.06,3

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(defun helm-persistent-action-display-window (&optional split-onewindow)
  "Return the window that will be used for persistent action.
If SPLIT-ONEWINDOW is non-`nil' window is split in persistent action."
  (with-helm-window
    (setq helm-persistent-action-display-window
      (cond ((and (window-live-p helm-persistent-action-display-window)
                (not (member helm-persistent-action-display-window
                      (get-buffer-window-list helm-buffer))))
              helm-persistent-action-display-window)
        ((and helm--buffer-in-new-frame-p helm-initial-frame)

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Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

All hex value from 100% to 0% alpha:

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type koaRouter;

[@bs.module] external koaRouter : koaRouter = "koa-router";

[@bs.new] external newRouter : unit => koaRouter = "KoaRouter";

[@bs.send] external get : (koaRouter, string, 'a => Js.Promise.t(unit)) => unit = "";

[@bs.send] external post : (koaRouter, string, 'a => Js.Promise.t(unit)) => unit = "";

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type ioRedis;

[@bs.new] [@bs.module] external ioRedis : unit => ioRedis = "ioredis";

[@bs.send] external set : (ioRedis, string, string, string, int) => Js.Promise.t(string) = "";

[@bs.send] external get : (ioRedis, string) => Js.Promise.t(Js.Nullable.t(string)) = "";

[@bs.send] external on : (ioRedis, string, unit => unit) => unit = "";

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Backbone.js

Simple Starting Point

创建 Model

var Person = Backbone.Model.extend();

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git init                                                  # 初始化本地git仓库（创建新仓库）
git config --global user.name "xxx"                       # 配置用户名
git config --global user.email "xxx@xxx.com"              # 配置邮件
git config --global color.ui true                         # git status等命令自动着色
git config --global color.status auto
git config --global color.diff auto
git config --global color.branch auto
git config --global color.interactive auto
git config --global --unset http.proxy                    # remove  proxy configuration on git
git clone git+ssh://git@192.168.53.168/VT.git             # clone远程仓库