trcarden

# SSL self signed localhost for rails start to finish, no red warnings. 

# 1) Create your private key (any password will do, we remove it below)

$ openssl genrsa -des3 -out server.orig.key 2048


# 2) Remove the password

$ openssl rsa -in server.orig.key -out server.key

equivalent

# install and make run basic bootstrap date-picker functionality described here http://www.eyecon.ro/bootstrap-datepicker/

# app/assets/javascript/datepicker.js.coffee
$(document).on 'pageChanged', ->

  # datepicker for simple_form & Ransack
  $(".custom_datepicker_selector").datepicker().on 'changeDate', (en) ->
    correct_format = en.date.getFullYear() + '-' + ('0' + (en.date.getMonth() + 1)).slice(-2) + '-' + ('0' + en.date.getDate()).slice(-2) # date format yyyy-mm-dd
    $(this).parent().find("input[type=hidden]").val(correct_format)

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

andreyvit

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

wycats

Proposal for Improving Mass Assignment

For a while, I have felt that the following is the correct way to improve the mass assignment problem without increasing the burden on new users. Now that the problem with the Rails default has been brought up again, it's a good time to revisit it.

Sign Allowed Fields

When creating a form with form_for, include a signed token including all of the fields that were created at form creation time. Only these fields are allowed.

To allow new known fields to be added via JS, we could add:

fnhipster

!!! 5
%html
  %head
    %title= "Your Website"
    %meta{ :content => "", :name => "description" }
    %meta{ :content => "", :name => "author" }
    %meta{ :content => "3 days", :name => "revisit-after" }
    %link{ :href => "http://creativecommons.org/licenses/by/3.0/", :rel => "license", :title => "Creative Commons Attribution 3.0 Unported License" }
    %link{ :href => "/feed", :rel => "alternate", :title => "Atom", :type => "application/atom+xml" }
    %link{ :href => "/css/screen.css", :media => "screen", :rel => "stylesheet" }

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')