NilClass#^

false ^ object → true or false

nil ^ object → true or false

#define false_xor 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 also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0