列表推导式为从序列中创建列表提供了一个简单的方法。
List comprehensions provide a concise way to create lists from sequences.
如果对Python十分熟悉,不难发现它非常类似于Python内的列表推导式(listing comprehension)。
It is very similar to listing comprehensions in Python, if you are familiar with Python.
load_biz _ rules的最后一行执行了一次列表推导(list comprehension),构建并返回一个函数列表。
The last line of load_biz_rules performs list comprehension to build and return a list of functions.
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