Sha256: e2922b45bee1974fdc112890dafda7c4bd259ca6bf168eae2116d893ea36d208
Contents?: true
Size: 395 Bytes
Versions: 10
Compression:
Stored size: 395 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, Noah Gibbs
def only
unless size == 1
raise IndexError, "Array#only called on non-single-element array"
end
first
end
end
Version data entries
10 entries across 10 versions & 1 rubygems