11. Lambdas

Lambdas are identical to Methods, except that they are anonymous and therefore cannot be overloaded. They provide a quicker syntax for defining small, limited use methods.

LambdaArgumentList ::=  "(" [ Argument [ "," Argument ]* ] ")"
LambdaArguments    ::=  LambdaArgumentList | Argument
Lambda             ::=  [LambdaArguments] "=>" Value

array = [1, 2, 3, 4]

array.map(a => a**2) #=> [1, 4, 9, 16]

array.reduce((a, b) => a*b) #=> 24

a = => puts("hi")
12.times(a)