method

fetch_values

Importance_1
Ruby latest stable (v2_5_5) - 0 notes - Class: Hash
fetch_values(*args) public

Returns an array containing the values associated with the given keys but also raises KeyError when one of keys can’t be found. Also see Hash#values_at and Hash#fetch.

h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }

h.fetch_values("cow", "cat")                   #=> ["bovine", "feline"]
h.fetch_values("cow", "bird")                  # raises KeyError
h.fetch_values("cow", "bird") { |k| k.upcase } #=> ["bovine", "BIRD"]
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