How to understand the functional programming code for converting IP string to a number?
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Published on 2012-10-31T10:51:49Z
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In a python discusion, I saw a way to convert IP string to a integer in functional progamming way. Here is the Link .
The function is implemented in a single line.
def ipnumber(ip):
return reduce(lambda sum, chunk: sum <<8 | chunk, map(int, ip.split(".")))
However, I have few ideas of funcional programming. Could anybody explain the function in detail? I've some knowledg of "map" and "reduce". But I don't konw what "|" and "chunk" mean here?
Thanks.
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