Sha256: 47ae313ac9d5bd4f4ba191cba5c1fdea464fea0199e6339d60373708312d2f6b
Contents?: true
Size: 803 Bytes
Versions: 10
Compression:
Stored size: 803 Bytes
Contents
class Hash
# By default, only instances of Hash itself are extractable.
# Subclasses of Hash may implement this method and return
# true to declare themselves as extractable. If a Hash
# is extractable, Array#extract_options! pops it from
# the Array when it is the last element of the Array.
def extractable_options?
instance_of?(Hash)
end
end
class Array
# Extracts options from a set of arguments. Removes and returns the last
# element in the array if it's a hash, otherwise returns a blank hash.
#
# def options(*args)
# args.extract_options!
# end
#
# options(1, 2) # => {}
# options(1, 2, :a => :b) # => {:a=>:b}
#
def extract_options!
if Hash === last && last.extractable_options?
pop
else
{}
end
end
end
Version data entries
10 entries across 9 versions & 2 rubygems