Internal validations library used by the Fanforce codebase.

DialSorcerer is a Ruby gem that provides comprehensive phone number parsing, validation, and formatting capabilities. It supports international phone number formats, validation of phone number types (mobile, fixed-line, VOIP, etc.), and conversion between different formatting standards including ...

Validations for CPF and CNPJ

Performs k-fold cross-validation on machine learning classifiers.

Ernr builds on the power of Rails 3 validations. It lets you use validations to identify situations which are warnings rather than errors. It also lets you define a callback on the model which is executed after save if there are any warnings.

emailvalidation.io provides an email validation & verification API. Automate email validation & verification without any user interaction.

DataMapper plugin for performing validations on data models

Simple client validation messages

Sequel plugin which provides sexy validations for model.

SA VAT number validation

For making dm-validations work the way Byron expects it will

Validate graphql-ruby arguments easily with dry-validation

Validation of complex structures

Simple client side validation that keeps validation in the models

displays validation errors to fields on views

Perform validation on your node's attributes from a Cookbook's attribute metadata definitions.

A collection of common validation rules

Tracks each validation error, providing an aggregate to identify UI issues

ShipEngine's easy-to-use REST API lets you manage all of your shipping needs without worrying about the complexities of different carrier APIs and protocols. We handle all the heavy lifting so you can focus on providing a first-class shipping experience for your customers at the best possible pri...

Validation is an Either which can accumulate failures when used with the apply operator (*) and a Semigroup on the Left.