How to iterate over hashmap in Kotlin?

问题

How to iterate over HashMap in Kotlin?

typealias HashMap<K, V> = HashMap<K, V> (source)

回答1:

It's not that difficult:

for ((key, value) in map) {
    println("$key = $value")
}

OR
_{(Updated in accordance with @RuckusT-Boom's and @KenZira's information.)}

 map.forEach { (key, value) -> println("$key = $value") }

回答2:

For the above answer, be careful with Android below N!

map.forEach { key, value -> println("$key = $value") }

reference to Java 8 api which leads to:

Rejecting re-init on previously-failed class java.lang.Class<T>

---

map.forEach { (key, value) -> println("$key = $value") }

is Kotlin feature

来源：https://stackoverflow.com/questions/47204146/how-to-iterate-over-hashmap-in-kotlin