Is there way of getting the whole entry set back f...

# getting-started

[Matt]

Is there way of getting the whole entry set back from a map rather than just the value?

[diesieben07]

Do you mean Map#entries? https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-map/entries.html

[Matt]

Yes, but how do I select an entry using a key?

[Nikky]

map.entries.find { (k, v) -> k == key }

[diesieben07]

map[k]?.let { v -> k to v }

[diesieben07]

That gives you a Pair<K, V> and is much faster than searching through the whole set

[Matt]

what does the function v -> k to v do?

[diesieben07]

a to b creates a Pair from a and b

[Matt]

k is then unresolved?

[Nikky]

k would be the key that you request the entry for, kinda need to know it

[Matt]

Intellij is complaining that k is unresolved in map[myKey].let { v -> k to v }

[Nikky]

in that case you want to do map[myKey].let { v -> myKey to v }