Provides short interface for choosing elements from array of structs. Filtering by equality, matching and inclusion, e.g.: target.choose(:street => "Main", :age => (24..30), :address => /Main/) Filtering by instance evaluated string, e.g.: target.choose("age >= 24 && address =~ /^Main/") Rejecting elements with #choose_not method, e.g.: target.choose_not(:street => "Main")