文档
实例
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示例
>>>
导入文本。 阅读(readMaybe)
>>>
let readMaybeInt=readMaybe::String->Maybe Int
>>>
mapMaybe readMaybeInt[“1”,“Foo”,“3”] [1,3]
>>>
catMaybes$地图读取MaybeInt[“1”,“Foo”,“3”] [1,3]
>>>
地图可能只是[1,2,3] [1,2,3]