Python Multiset.removeの例

コード例 #1

class Max(WindowFunction):
    def __init__(self, **kwargs):
        object.__init__(self)
        self.total = Multiset()

    def add(self, value):
        if value == None:
            return
        self.total.add(value)

    def sub(self, value):
        if value == None:
            return
        self.total.remove(value)

    def end(self):
        return MAX(*self.total)

コード例 #2

class Min(WindowFunction):
    def __init__(self, **kwargs):
        object.__init__(self)
        self.total = Multiset()

    def add(self, value):
        if value == None:

            return
        self.total.add(value)

    def sub(self, value):
        if value == None:
            return
        self.total.remove(value)

    def end(self):
        return MIN(self.total)