Flowdock
method

slice

Importance_1
Ruby on Rails latest stable (v4.2.1) - 0 notes - Class: Parameters
slice(*keys) public

Returns a new ActionController::Parameters instance that includes only the given keys. If the given keys don’t exist, returns an empty hash.

params = ActionController::Parameters.new(a: 1, b: 2, c: 3)
params.slice(:a, :b) # => {"a"=>1, "b"=>2}
params.slice(:d)     # => {}
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