Sha256: 882b4b776905f464a0c55678f9f73294b0650c0f5c8ad914f39c3363d85a3b41
Contents?: true
Size: 889 Bytes
Versions: 25
Compression:
Stored size: 889 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 unless method_defined?(:extractable_options?)
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 last.is_a?(Hash) && last.extractable_options?
pop
else
{}
end
end unless method_defined?(:extract_options!)
end
Version data entries
25 entries across 25 versions & 1 rubygems