Sha256: a698718aa88362d212c89a1b9c7a7a971050bfef32ef0389d7423c95f493d919
Contents?: true
Size: 408 Bytes
Versions: 7
Compression:
Stored size: 408 Bytes
Contents
class Array
# Returns the _only_ element in the array. Raises an IndexError if
# the array's size is not 1.
#
# [5].only # -> 5
# [1,2,3].only # -> IndexError
# [].only # -> IndexError
#
# CREDIT: Gavin Sinclair
# CREDIT: Noah Gibbs
def only
unless size == 1
raise IndexError, "Array#only called on non-single-element array"
end
first
end
end
Version data entries
7 entries across 7 versions & 2 rubygems