alfonsodev

Docker Cheat Sheet

Why

Why Should I Care (For Developers)

"Docker interests me because it allows simple environment isolation and repeatability. I can create a run-time environment once, package it up, then run it again on any other machine. Furthermore, everything that runs in that environment is isolated from the underlying host (much like a virtual machine). And best of all, everything is fast and simple."

TL;DR, I just want a dev environment

alfonsodev

function hex_sha1(s) {
  return binb2hex(core_sha1(str2binb(s), s.length * chrsz));
}

function b64_sha1(s) {
  return binb2b64(core_sha1(str2binb(s), s.length * chrsz));
}

function str_sha1(s) {
  return binb2str(core_sha1(str2binb(s), s.length * chrsz));

alfonsodev

{
   "_id": "_design/example",
   "views": {
      "foo": {
         "map": "function(doc){ emit(doc._id, doc._rev)}"
      }
   },
   "updates": {
      "lib": {           
         "libjsonpatch": "var jsonpatch;(function(e){function i(e,i){var s=false,o=0,u=i.length,a;while(o<u){a=i[o];var f=a.path.split(\"/\");var l=e;var c=1;var h=f.length;while(true){if(r(l)){var p=parseInt(f[c],10);c++;if(c>=h){s=n[a.op].call(a,l,p,e);break}l=l[p]}else{var d=f[c];if(d.indexOf(\"~\")!=-1)d=d.replace(/~1/g,\"/\").replace(/~0/g,\"~\");c++;if(c>=h){s=t[a.op].call(a,l,d,e);break}l=l[d]}}o++}return s}var t={add:function(e,t){e[t]=this.value;return true},remove:function(e,t){delete e[t];return true},replace:function(e,t){e[t]=this.value;return true},move:function(e,t,n){var r={op:\"_get\",path:this.from};i(n,[r]);i(n,[{op:\"remove\",path:this.from}]);i(n,[{op:\"add\",path:this.path,value:r.value}]);return true},copy:function(e,t,n){var r={op:\"_get\",path:this.from};i(n,[r]);i(n,[{op:\"add\",path:this.path,value:r.value}]);re

alfonsodev

package main

/*
* Script that scrapes google front page
* Usage: ./google [<query>]
* e.g. ./google hacker news
*/

import (
  "fmt"

alfonsodev

<link rel="import" href="../topeka-elements/theme.html">
<link rel="import" href="../topeka-elements/topeka-resources.html">
<link rel="import" href="../topeka-elements/topeka-app.html">
<link rel="import" href="../ace-element/ace-element.html">
<link rel="import" href="../cool-clock/cool-clock.html">
<link rel="import" href="../chart-js/chart-js.html">

<polymer-element name="my-element">

  <template>

alfonsodev

$ vim  ~/.tmux.conf

set -g mode-mouse on
set -g mouse-resize-pane on
set -g mouse-select-pane on
set -g mouse-select-window on
set -g mode-mouse on
set -g default-terminal "screen-256color"

:x!

alfonsodev

lsof -i :9988

alfonsodev

<link rel="import" href="../topeka-elements/theme.html">
<link rel="import" href="../topeka-elements/topeka-resources.html">
<link rel="import" href="../topeka-elements/topeka-app.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;

alfonsodev

Database learning resources

PostgreSQL JSON support

• JSON Type
• JSON Functions and Operators
• JSON Datatype - wiki 9.2
• JSON Additional Functionality - wiki 9.3
• PostgreSQL as a Schemaless Database

alfonsodev

package main

import (
	"fmt"
	"reflect"
)

type User struct {
	Name string
	Age  int