values_for makes your ActiveRecord-backed class work with an enumerable type. Instead of existing ActiveRecord plugins such as enum_fu, which store the enumerable attribute as an integer, values_for stores the content of the enumerable attribute in a varchar column of the database....

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...

Experiments in number theory with new predicate methods for Integer.

Custom assertions functions. This 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.

== 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.

Check whether an ActiveRecord instance satisfies the conditions of a relation, in memory

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

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

Convert your predicate_methods? into bang_methods! without abusing method_missing.

Record method invocations, query the invocations, and use predicates to verify a method's invocation

Truth accessors for Ruby classes and models.

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

Having trouble figuring out which date is in the future looking at &gt; or &lt; ?

A JSON Patch + Pointer + Predicates Implementation

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.