Functional Programming Tools: reduce 2,functionalreduce,# If there's
文章由Byrx.net分享于2019-03-23 06:03:23
Functional Programming Tools: reduce 2,functionalreduce,# If there's
# If there's only one item in the sequence, its value is returned; if the sequence is # empty, an exception is raised.# A third argument can be passed to indicate the starting value. In this case the # starting value is returned for an empty sequence, and the function is first applied # to the starting value and the first sequence item, then to the result and the next # item, and so on. For example,def sum(seq): def add(x,y): return x+y return reduce(add, seq, 0)print sum(range(1, 11))print sum([])
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