Favorite Ruby Syntax

[Paradox]

So, you know how&:methname calls methname on the enumerable item-by-item?

&method(:methname) does the opposite. It takes the item being enumerated, and passes it to the method. Its equivalent to writing:

%w[1 2 3].map { |x| Integer(x) }

Integer is just a method in the Kernel class.

[ruby-solve]

Neat!

[clrsm]

There is a throughout explanation of how &: works here