To simplify things, write a check_count function you can use in either case, as shown below.
为简单起见，编写两种情况下都可以使用的一个check_count函数，如下面的清单所示。
In this case, you used an anonymous inline function, also known as a closure.
在这个案例中您使用一个匿名内联函数，也称为一个闭包。
In this case, you used an anonymous inline function, also known as a closure.
在这个案例中您使用一个匿名内联函数，也称为一个闭包。
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