LengthWhile

可用

Returns the length of the longest prefix for which a predicate holds.

形式

LengthWhile[list, crit]

验证过的示例LengthWhile[{2, 4, 6, 7, 8}, EvenQ] → 3

在 Qurak 上运行搜索参考

主题

Elements Of Lists - Finding Sublists
Functional Iteration - General
Functional Programming - Iteratively Applying Functions »
New In60 Alphabetical Listing - L
New In60 List Manipulation - New List-Oriented Functional Programming

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