求助if in类型不匹配

Question

我用idea便利一个floatArray数组，使用if in或者if !in，例如代码：
var e = floatArrayOf(2.1f, 3.5f, 4.2f, 5.8f)
if(2.2f !in e) {
println(“2.2 not exist in variable e”)
}
代码提示in直接变红，然后运行就出现None of the following candidates is applicable because of receiver type mismatch:
有人遇到这个问题吗？

另附控制台打印的错误日志

Answer 1

bennyhuo 2022-10-01 23:55:34

kotlin 1.6 把 Float 类型的 in 运算符删掉了。参考下面的提示:

Using 'contains(Float): Boolean' is an error. The function has unclear behavior when searching for NaN or zero values and will be removed soon. Use 'any { it == element }' instead to continue using this behavior, or '.asList().contains(element: T)' to get the same search behavior as in a list.

Answer 2

Hickey_GG 2023-11-08 11:01:49

改成集合toList

Answer 3

bennyhuo 2022-10-01 23:56:15

https://play.kotlinlang.org/#eyJ2ZXJzaW9uIjoiMS42LjIxIiwicGxhdGZvcm0iOiJqYXZhIiwiYXJncyI6IiIsIm5vbmVNYXJrZXJzIjp0cnVlLCJ0aGVtZSI6ImlkZWEiLCJjb2RlIjoiLyoqXG4gKiBZb3UgY2FuIGVkaXQsIHJ1biwgYW5kIHNoYXJlIHRoaXMgY29kZS5cbiAqIHBsYXkua290bGlubGFuZy5vcmdcbiAqL1xuZnVuIG1haW4oKSB7XG4gICAgcHJpbnRsbihcIkhlbGxvLCB3b3JsZCEhIVwiKVxuICAgIFxuICAgIHZhciBlID0gZmxvYXRBcnJheU9mKDIuMWYsIDMuNWYsIDQuMmYsIDUuOGYpXG5cbmlmKDIuMmYgIWluIGUpICB7XG5cbnByaW50bG4oXCIyLjIgbm90IGV4aXN0IGluIHZhcmlhYmxlIGVcIilcblxufVxuXG59In0=

在这里可以切换版本查看结果