Ruby defines curry for Method and Proc, allowing procs to return partially applied procs when they get called with fewer than the required number of arguments. For example:

multiply = -> x,y { x * y }.curry
#=> #<Proc:0x007fed33851510 (lambda)>
multiply[2,3]
#=> 6
double = multiply[2]
#=> #<Proc:0x007fed35892888 (lambda)>
double[3]
#=> 6

Note: While Proc#curry has been around since Ruby 1.9, Method#curry was only added in Ruby 2.2.0. For versions before 2.2.0, you will first need to convert your method object to a proc via Method#to_proc.

Check out the Ruby docs for more details.