Sorbet's runtime type checking component

Type checking and type casting of parameters for Action Pack

A type coercion lib works with Sorbet's static type checker and type definitions; raises an error if the coercion fails.

A gem that provides DSL for serialization of plain old Ruby objects to JSON in a declarative style by defining a `schema`. It also provides a trivial type checking in the runtime before serialization.

Type check JSON objects

MooseX is an extension of Ruby object DSL. The main goal of MooseX is to make Ruby Object Oriented programming easier, more consistent, and less tedious. With MooseX you can think more about what you want to do and less about the mechanics of OOP. It is a port of Moose/Moo from Perl to Ruby world...

Typecheck sugar for Ruby.

Makes sure users don't accidentally create an account for the wrong e-mail address. Because 'gmial' isn't actually what they meant to type. Similarly, 'yaho.com', or the strange-but-true '.c0m'. Not even making that one up. If you're concerned about false-positives, it's super-easy to check. Ther...

Gradual type checker for Ruby

Type-checked serializers for your Ruby objects

A puppet-lint plugin to check that manifest files do not contain resources outside of a class or defined type definition.

The fastest type checking gem

Run-time type checker and transformer for Ruby

The strongtyping gem is a Ruby library that provides type checking and method overloading.

Type checking for Ruby methods.

RubyLess is an interpreter for "safe ruby". The idea is to transform some "unsafe" ruby code into safe, type checked ruby, eventually rewriting some variables or methods.

The Preconditions library provides a simple set of methods for checking arguments being passed into a method. Instead of writing custom checks and raising exceptions directly in your code you can use Preconditions to verify basic properties of your arguments (not-nil, satisfying a boolean expres...

a Rails gem that allows you to validate a URL entered in a form. It validates if the URL exists by hitting it with a HEAD request. The improved version includes retries for common patterns when the head request is refused before giving a failure notice. It also looks up a SITE_URL constant to...

Allows you check if an object match a class expression. It is typically used to check the type of method paraameters. It is an alternative to using Ruby-3 .rbs files but with a different syntax and only dynamic checks Typically you'll include the Constrain module and use #co...

It is a delegate library that checks the type of an argument