evancz

// initialize the Shanghai component which keeps track of
// shipping data in and out of the Port of Shanghai.
var shanghai = Elm.worker(Elm.Shanghai, {
    coordinates:[0,0],
    incomingShip: { name:"", capacity:0 },
    outgoingShip: ""
  });

function logger(x) { console.log(x) }
 

10nin

defmodule Crypto do
    def md5(s) do
        list_to_binary(Enum.map(bitstring_to_list(:crypto.md5(s)), fn(x) -> integer_to_binary(x, 16) end))
    end
end

gist:5445383

>>> import dis
>>> def a():
...   return [ x for x in some_list if x % 2 == 0 ]
...
>>> dis.dis(a)
  2           0 BUILD_LIST               0
              3 LOAD_GLOBAL              0 (some_list)
              6 GET_ITER
        >>    7 FOR_ITER                28 (to 38)
             10 STORE_FAST               0 (x)

nightire

Routes

小心地使用 Match（Rails 3 已实现）

Rails 3 提供了 match 方法供我们自定义 routes，然而我们要小心使用它以避免“跨站脚本攻击”（XSS Attack）。比如像这样的 routes：

注：（r3 代表 Rails 3，r4 代表 Rails 4）

# routes.rb

ibanez270dx

#
# At CoverHound, we use conditional validations all over the form. However, there is no proper way to do
# this in Rails. Instead, we can provide an array of attributes (validated_fields attribute)
# and ensure they are the only ones to get validated.
#

module ConditionalValidations
  attr_accessor :validated_fields
  
  def field_is_required?(field)

jakeonrails

data:text/html, <style type="text/css">#e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div id="e"></div><script src="http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("e");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/ruby");</script>

ufologist

/**
 * 分析豆瓣阅读查看电子书的逻辑
 * 
 * 主要用到的JavaScript为
 * 1. OzJS(管理模块)
 * 2. jQuery(base库)
 * 3. Backbone.js(web application框架)
 * 
 * 过程分析
 * --------

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

Gozala

// Lack of tail call optimization in JS
var sum = function(x, y) {
  return y > 0 ? sum(x + 1, y - 1) :
         y < 0 ? sum(x - 1, y + 1) :
         x
}

sum(20, 100000) // => RangeError: Maximum call stack size exceeded

// Using workaround