Current File : //opt/alt/ruby18/share/ri/1.8/system/Method/arity-i.yaml
--- !ruby/object:RI::MethodDescription
aliases: []
block_params:
comment:
- !ruby/struct:SM::Flow::P
body: Returns an indication of the number of arguments accepted by a method. Returns a nonnegative integer for methods that take a fixed number of arguments. For Ruby methods that take a variable number of arguments, returns -n-1, where n is the number of required arguments. For methods written in C, returns -1 if the call takes a variable number of arguments.
- !ruby/struct:SM::Flow::VERB
body: " class C\n def one; end\n def two(a); end\n def three(*a); end\n def four(a, b); end\n def five(a, b, *c); end\n def six(a, b, *c, &d); end\n end\n c = C.new\n c.method(:one).arity #=> 0\n c.method(:two).arity #=> 1\n c.method(:three).arity #=> -1\n c.method(:four).arity #=> 2\n c.method(:five).arity #=> -3\n c.method(:six).arity #=> -3\n\n "cat".method(:size).arity #=> 0\n "cat".method(:replace).arity #=> 1\n "cat".method(:squeeze).arity #=> -1\n "cat".method(:count).arity #=> -1\n"
full_name: Method#arity
is_singleton: false
name: arity
params: |
meth.arity => fixnum
visibility: public