Method Objects

Method Objects

method(:name) converts an existing method into a callable Method object, which behaves much like a lambda and can be stored, passed around, or converted with .to_proc. This lets you treat a named method as a first-class value, the same way you would a lambda. It's especially handy for passing an existing method directly to something like map without wrapping it in a block.

Note: numbers.map(&method(:square)) passes an existing method directly into map, avoiding a redundant wrapper block.

Example: Method Objects

def square(x)
  x * x
end

square_method = method(:square)
puts square_method.call(5)

numbers = [1, 2, 3, 4]
puts numbers.map(&method(:square)).inspect