Ruby/Hash/Hash values
Материал из Wiki.crossplatform.ru
Версия от 17:57, 13 сентября 2010; ViGOur (Обсуждение | вклад)
Get all values as an array
hash = {1 => 2, 2 => 2, 3 => 10} p hash.values # => [2, 2, 10]
Get an array with all the values from a hash with values:
zip = { 1 => "One", 2 => "Two", 3 => "Three", 4 => "Four", 5 => "Five", 6 => "Six", 7 => "Seven", 8 => "Eight", 9 => "Eight" } puts zip.values
what is the default value for a hash
empty = Hash.new(-1) # Specify a default value when creating hash empty["one"] # => -1 empty.default = -2 # Change the default value to something else empty["two"] # => -2 empty.default # => -2: return the default value
