philmill

Verifying my Blockstack ID is secured with the address 16F8YJrWTHgMSdpZ8tpYgfWLodzbqwv4BL https://explorer.blockstack.org/address/16F8YJrWTHgMSdpZ8tpYgfWLodzbqwv4BL

philmill

3 Main Principles

Single Immutable State Tree

All application state is contained in a single object tree which cannot be modified directly.

Actions

Actions are used to modify the app state tree. They're objects which describe changes. They only require a type key with other info to describe the change. Any data that will be represented by the app tree will get there via actions regardless of source (UX || Network).

{ type: "ADD_ITEM",
 index: 1,

philmill

Homebrew Upgrade of Rabbitmq Gotcha

If you recieve something like {could_not_start,rabbit,{previous_upgrade_failed,{rabbit,start,[normal,[]]}}}, searching for could_not_start didn't provide me with much help.

Remove previous mnesia contents

For rabbitmq: stable 3.5.3 this is located at /usr/local/var/lib/rabbitmq/mnesia/.

Simply rm -rf * to remove all of it's contents.

philmill

# jQuery(function($){
#  });

# can be re-written as 
jQuery ($) -> 
  console.log 'stuff'
# or if jQuery is only one useing $
$ ->
  console.log 'stuff'
  

philmill

begin
  # something which might raise an exception
rescue SomeExceptionClass => some_variable
  # code that deals with some exception
rescue SomeOtherException => some_other_variable
  # code that deals with some other exception
else
  # code that runs only if *no* exception was raised
ensure
  # ensure that this code always runs, no matter what

philmill

// Falsey
0, NaN, ""

// Automatic Type Conversion!!!
console.log(8 * null)
//> 0
console.log("5" - 1)
//> 4
console.log("5" + 1)
//> 51

philmill

// inspect an element for events (jquery <= 1.7)
$("SELECTOR").data("events");

// not selector
$( "input:not(:checked)" )