QuacksLike is a module for RSpec to add matchers that test if an object is fully duck-typed to pretend to be another class. This kind of thing is really only necessary when passing such an object as the return value in an API where you don't know exactly how it will be consumed, but it needs to ...

Property types that add CHECK constraints to your DB and validations to your model. Data integrity FTW.

Reliable contract definition, data validation, and type checking for Ruby.

Group your checkboxes like grouped select via “grouped_collection_select” in Rails. This gem adds a new Formtastic input type “grouped_check_boxes”, that helps you group long lists of checkboxes.

A puppet-lint plugin to check if parameters in Classes and Defines has types declared.

Checks for valid content type of excel files.

A Ruby dialect that includes types in the language. Transpiles to Ruby and RBS by leveraging the ruby-next and irbs gems. Type checks with steep.

Gem to parse Facebook ID's from various Facebook URL types. The five link types are: Status, Photo, Video, Link, Checkin.

A Gem to get files Header, Footer, Type(via headers), create file checksum, check file checksum, Carving and ... .

Flags is a framework for Ruby which allows the definition of command-line flags, which are parsed in and can be accessed smartly from within your Ruby code. This framework allows for numerous different flag types, and takes care of the process of type conversion and flag validation (type and val...