Sha256: b610d0d9256cbb3565f8930ab36a0b283b5bfd3a160159e923db15ba6c8469e6
Contents?: true
Size: 519 Bytes
Versions: 93
Compression:
Stored size: 519 Bytes
Contents
# frozen_string_literal: true
module Mutant
# Utility methods
module Util
# Error raised by `Util.one` if size is less than zero or greater than one
SizeError = Class.new(IndexError)
# Return only element in array if it contains exactly one member
#
# @param array [Array]
#
# @return [Object] first entry
def self.one(array)
return array.first if array.one?
fail SizeError, "expected size to be exactly 1 but size was #{array.size}"
end
end # Util
end # Mutant
Version data entries
93 entries across 93 versions & 1 rubygems