Inheritance vs Composition

examples.rb

player1.is_better_than(player2)
# or
coach1.is_at_least_as_good_as(coach2)

modularization.rb

class Player
    is_capable_of "comparison"

    def compare(otherPlayer)
        if this.time_spent_on_field > otherPlayer.time_spent_on_field { return 1 }
        else if this.time_spent_on_field == otherPlayer.time_spent_on_field { return 0 }
        else { return -1 }
    end
end


class Coach
    is_capable_of "comparison"

    def average
        this.points_earned / this.time_spent_on_bench
    end

    def compare(otherCoach)
        if this.average > otherCoach.average {return 1}
        else if this.average == otherCoach.average {return 0}
        else {return -1}
    end
end

module Comparison
    def is_better_than(other)
        return this.compare(other) == 1
    end

    def is_worst_than(other)
        return this.compare(other) == -1
    end

    def is_equal_to(other)
        return this.compare(other) == 0
    end

    def is_at_least_as_good_as(other)
        return this.compare(other) >= 0
    end
end

ugly.rb

def is_better_than(otherPerson)
    if(this.kind == "Player")
        # use criteria 1
    else if (this.kind == "Coach")
        # use criteria 2
    end
end