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新手问题 说个小坑

zsusyt · June 05, 2016 · Last by zsusyt replied at June 05, 2016 · 1704 hits

最近在玩 codingame 这个网站，初级 PUZZLE 的 MIME Type 中有个小坑（也可能是新手的误解）。 （ruby 2.0.0p647)

a = ".mp3."
a.split(".")

以为结果会是

["", "mp3", ""]

其实结果是

["", "mp3"]
zsusyt #0 June 05, 2016

查了下文档，原来 split 还有一个参数：

split(pattern=nil, [limit]) → anArray

具体见这里 把 limit 设置为任意负值，就会得到

["", "mp3", ""]
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