Class | Spruz::Generator |
In: |
lib/spruz/generator.rb
|
Parent: | Object |
This class can create generator objects, that can produce all tuples, that would be created by as many for-loops as dimensions were given.
The generator
g = Spruz::Generator[1..2, %w[a b c]]
produces
g.to_a # => [[1, "a"], [1, "b"], [1, "c"], [2, "a"], [2, "b"], [2, "c"]]
The ‘each’ method can be used to iterate over the tuples
g.each { |a, b| puts "#{a} #{b}" }
and Spruz::Generator includes the Enumerable module, so Enumerable.instance_methods can be used as well:
g.select { |a, b| %w[a c].include? b } # => [[1, "a"], [1, "c"], [2, "a"], [2, "c"]]
Add another dimension to this generator. enum is an object, that ought to respond to the iterator method (defaults to :each).