kotlin - 从内部 switch 语句 Kotlin 开始

Question

when(message) {
    .startsWith("hey")
}

如何检查我的字符串是否以 Kotlin 中 switch 语句内的某个单词开头？

Answer 1

您可以使用不带参数的when:

val msg = "This is some message"

when {
    msg.startsWith("This") -> println("Starts with This")
    msg.startsWith("That") -> println("Starts with That")
    else -> println("Doesn't start with This or That")
}

输出:

Starts with This