Kotlin-检查数组是否包含值的惯用方式 [英] Kotlin - Idiomatic way to check array contains value

问题描述

检查字符串数组是否包含Kotlin中的值的惯用方式是什么?就像红宝石的#include?.

What's a idiomatic way to check if an array of strings contains a value in kotlin? Just like ruby's #include?.

我大概是:

array.filter { it == "value" }.any()

有更好的方法吗?

推荐答案

您正在寻找的等效项是

The equivalent you are looking for is the contains operator.

array.contains("value") 

Kotlin为此操作员提供了另一种缀标记:

Kotlin offer an alternative infix notation for this operator:

"value" in array

与在后台调用的功能相同，但是由于缀标记在Java中找不到，我们可以说in是最惯用的方式.

It's the same function called behind the scene, but since infix notation isn't found in Java we could say that in is the most idiomatic way.

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