メソッドを引数とするメソッド

Python 



class cTest:

    def __init__(self, a):

        self.a = a

    

    def increment(self):

        self.a += 1

    

    def decrement(self):

        self.a -= 1

    

    def increment_n(self, n):

        self.repeat(self.increment, n)

    

    def decrement_n(self, n):

        self.repeat(self.decrement, n)

    

    def repeat(self, f, n):

        for i in range(n):

            f()

    

    def __str__(self):

        return str(self.a)
test = cTest(1)

test.increment_n(3)

print(test)        # 4

test.decrement_n(2)

print(test)        # 2