Ruby Array and Hash snippets to remember

array_hash_ruby_snippet.rb

# Array

## Manipulating element of string using squish (remove last whitespace) within array
Array.collect{|a| a.squish || a }

## Return an array values by key of hash
Hash.pluck(:your_key)

## Return an array keys from key of Hash
Hash.keys

# Hash

# Filtering hash by key
Hash.select{ |key, value| 
  key == ''
  }