# class Gem::Resolver::Set

Resolver sets are used to look up specifications (and their dependencies) used in resolution. This set is abstract.

### Attributes

errors[RW]

Errors encountered when resolving gems

prerelease[RW]

When true, allows matching of requests to prerelease gems.

remote[RW]

Set to true to disable network access for this set

### Public Instance Methods

find_all(req) click to toggle source

The #find_all method must be implemented. It returns all Resolver Specification objects matching the given DependencyRequest `req`.

    # File lib/rubygems/resolver/set.rb, line 33
    def find_all req
      raise NotImplementedError
    end

prefetch(reqs) click to toggle source

The prefetch method may be overridden, but this is not necessary. This default implementation does nothing, which is suitable for sets where looking up a specification is cheap (such as installed gems).

When overridden, the prefetch method should look up specifications matching `reqs`.

    # File lib/rubygems/resolver/set.rb, line 45
    def prefetch reqs
    end