Hashes in Ruby

gistfile1.txt

hsh = {
  'a' => 1, 
  'b' => 2,
  'c' => 3
}

hsh = Hash.new
hsh['a'] = 1
hsh['b'] = 2
hsh['c'] = 3

# Symbols
:test_symbol

hsh = Hash.new
hsh[:a] = 1
hsh[:b] = 2
hsh[:c] = 3
hsh

hsh = {
  :a => 1,
  :b => 2,
  :c => 3
}


hsh = {
  a: 1,
  b: 2,
  c: 3
}




CONSTANT_A = 'a'
CONSTANT_B = 'b'
CONSTANT_C = 'c'

CONSTANT_A = :a
CONSTANT_B = :b
CONSTANT_C = :c


hsh1 = {
  CONSTANT_A: 1,
  CONSTANT_B: 2,
  CONSTANT_C: 3
}


hsh2 = {
  CONSTANT_A => 1,
  CONSTANT_B => 2,
  CONSTANT_C => 3
}


module MyModule
  @b = 2
  @c = 3
  def self.a
    @b + @c
  end
end