A secure, non-evaling condition (boolean predicate) engine for end users

Having trouble figuring out which date is in the future looking at > or < ?

Provides syntax sugar for Ruby predicate blocks

Provides a predicate that checks whether your machine is currently online or offline, which may be useful for unit and integration tests.

Supplies macro similar to attr_accessor that adds default values, predicate methods, and other enhancements

Ennui provides a library of predicates which return true at various frequencies.

Provide the bang and predicate methods for Active Record

ActiveAdmin component which shows predicate as status.

A JSON Patch + Pointer + Predicates Implementation

Logica is a framework to reify and work with predicates.

Marso is the beginning of a small lightweight BDD project. Currently, this is just a very simple code sample that only displays a custom message in green or in red depending on the value of a predicate.

Predicates and conditions that extends to the ActiveRecord 3

Wrapper class for a Vagrant VM, providing access to testing predicates, such as port map information, process data, ssh connections, and more.

== Synopsys Ruby Enumerable extension. Main idea is lazy computations within enumerators. == Usage Install as a gem: sudo gem install deferred_enum This gem introduces DeferredEnumerator class: ary = [1, 2, 3, 4] deferred = ary.defer # #<DeferredEnumerator: [1, 2, 3, 4]:ea...

By defining predicate methods which except for the addition of '?' matches a state machine event and then configuring an in memory or cron-based event loop, the state machine will be able to change state automatically.

Filter collections using predicates like Ransack gem.

Single clause, branching method definitions are so 2007. Get with SRP and party! With overloaded_methods, you can separate out any conditional branching in your method to where it belongs: predicates! Feel the power of the chain-of-responsibility pattern in your own code!!!!!!

A primitive in-memory collection of key-value records known as "facts," with an ability to insert facts, add properties to facts, and delete facts. There is no ability to modify facts. It is also possible to find facts using Lisp-alike query predicates. An entire factbase may be exported to a bin...

MetaWhere offers the ability to call any Arel predicate methods (with a few convenient aliases) on your Model's attributes instead of the ones normally offered by ActiveRecord's hash parameters. It also adds convenient syntax for order clauses, smarter mapping of nested h...