8parth

Model.destroy_all
# if you haven't performed any other action after accidently deleting all records from Model, 
# then _ would grab last response generated by Model.destroy_all
destroyed_records = _  
destroyed_records.each do |destroyed_record|
  Model.create(destroyed_record.attributes)
end

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

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

0xadada

Moved, see VIM Cheatsheet