naveed-fida

// executes a callback for a dom element and all it's children

function walk(node, callback) {
  callback(node);
  node.childNodes.forEach(function(child) {
    walk(child, callback);
  });
}

// same functionality as the built-in one

naveed-fida

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

naveed-fida

function stringifyObj(obj) {
  let toStr = Object.prototype.toString;
  if(toStr.call(obj) == "[object String]") {
    return "\"" + String(obj) + "\"";
  } else if (toStr.call(obj) == "[object Number]") {
    return String(obj);
  } else if(toStr.call(obj) == "[object Array]") {
    let resultStr = "["
    for (let i = 0; i < obj.length; i++) {
      resultStr += stringifyObj(obj[i]);

naveed-fida

require "socket"

def parse_request(request_line)
  http_method, path_and_params, http_version = request_line.split(" ")
  path, params = path_and_params.split("?")
  params = (params || '').split("&").map {|p| p.split("=")}.to_h

  [http_method, path, params]
end