What lambda that does, it creates on the fly a function, as the program runs. That I can then pass around.
这里的入是在函数运行的时候,由一个函数创建的,然后我会传递这个值。
The idea of a function is, that I'm going to capture a common pattern of computation.
函数的目的,就是寻找计算的共同模式。
So, suppose I'm in a function, I need the space.
假使我在一个函数中,我需要一个空格。
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