NilClass#|

false | object → true or false

nil | object → true or false

#define false_or true_and

Returns false if object is nil or false, true otherwise:

Example

nil | nil        # => false
nil | false      # => false
nil | Object.new # => true

See also #^ #inspect #=~ #nil? also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0