methods/native_method_signatures.rb

tests/_examples/methods/native_method_signatures.rb in the metorex repository.

p "x".method(:upcase).parameters
p "x".method(:upcase).arity
p [].method(:push).parameters
p "x".method(:center).arity
p 1.method(:+).parameters
p Integer.method(:sqrt).arity
p method(:puts).arity
p "x".method(:freeze).arity
p 5.method(:between?).arity

Output:

[[:rest]]
-1
[[:rest]]
-1
[[:req]]
1
-1
0
2