Posted over 5 years ago. Visible to the public.

Short lambda syntax in Ruby 1.9

Ruby 1.9 brings a shorter way to define lambdas using the -> operator:

twice = -> (x) { 2 * x } # => 10

This is equivalent to:

twice = lambda {|x| 2 * x } # => 10

Note that the syntax is subtly different from Coffeescript where you define function parameters before the arrow: (x) -> { 2 * x }.

By refactoring problematic code and creating automated tests, makandra can vastly improve the maintainability of your Rails application.

Owner of this card:

Henning Koch
Last edit:
over 5 years ago
About this deck:
We are makandra and do test-driven, agile Ruby on Rails software development.
License for source code
Posted by Henning Koch to makandra dev
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