cheatsheets/pry.md

title: Pry

cd / ls

> cd Array

> ls
Array.methods: [] try_convert
Array#methods: & * + abbrev assoc at ...

> ls         # All

> ls -m      # Methods
> ls -M      # Instance methods

> ls -g      # Globals
> ls -l      # Local vars
> ls -c      # Constants

> ls -i      # Instance vars

> ls -G xx   # Grey by regex

Shell integration

shell-mode adds dir to the prompt

pry(main)> shell-mode
pry(main):/home/x $

Commands with . are shell commands

pry(main)> .cat hello.txt

Inspection

show-method Array#select

ri Array#each cd Gem show-doc try_activate

Finding

find-method each Array#each Array#each_index Enumerable#each_slice ...

Editing

edit-method Pry#repl

Gems

gem-cd foo # Switch to gem's dir gem-install foo gem-list

Misc commands

hist # History wtf? # Trace of recent exception

Rails console

$ pry -r ./config/environment

Bonus: hirb

table User.all view User.all view User.all, fields: %w[id name email]

Reference

• Pry
• Hirb