With a Map of <String, Int>, is there an ele...

# getting-started

[Kenneth]

With a Map of <String, Int>, is there an elegant way to increment the Int if present, or set it to 0 if not?

[thana]

maybe foo.put("key", foo.getOrPut("key") { -1 } + 1)

[spand]

If you are on the jvm you can use

.compute("key") { k, v ->
    if (v != null){
        v + 1
    } else 0
}