sigmike

sudo pacman -S libmagick6

PKG_CONFIG_PATH=/usr/lib/imagemagick6/pkgconfig gem install rmagick

# or with bundler:
PKG_CONFIG_PATH=/usr/lib/imagemagick6/pkgconfig bundle install

jtallant

Setting up Sinatra Project

create an empty project and add a Gemfile

cd ~/Desktop
mkdir project-name
cd project-name
touch Gemfile

squarism

In the below keyboard shortcuts, I use the capital letters for reading clarity but this does not imply shift, if shift is needed, I will say shift. So ⌘ + D does not mean hold shift. ⌘ + Shift + D does of course.

Tabs and Windows

Function	Shortcut
New Tab	⌘ + T
Close Tab or Window	⌘ + W (same as many mac apps)
Go to Tab	⌘ + Number Key (ie: ⌘2 is 2nd tab)
Go to Split Pane by Direction	⌘ + Option + Arrow Key

ytbryan

#go to hb_hba.conf
local   all         postgres                          ident

#go to psql
sudo -u postgres psql

#enter the following command to set or change the password
ALTER USER postgres PASSWORD 'actual_password';

#go to hb_hba.conf to change this line back

damien-roche

A Primer on Ruby Method Lookup

Method lookup is a simple affair in most languages without multiple inheritance. You start from the receiver and move up the ancestors chain until you locate the method. Because Ruby allows you to mix in modules and extend singleton classes at runtime, this is an entirely different affair.

I will not build contrived code to exemplify the more complicated aspects of Ruby method lookup, as this will only serve to confuse the matter.

When you pass a message to an object, here is how Ruby finds what method to call:

1. Look within singleton class

tomas-stefano

Capybara Actions

# Anchor
click_link 'Save'

# Button
click_button 'awesome'

# Both above

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')