<@U0D06TWMA> ``` private val myMap = mutableMa...

# getting-started

[north]

@Andreas Sinz

private val myMap = mutableMapOf<String, Long>()
    private fun defaultValue(): Long = 5
    fun get(key: String) {
        myMap.getOrPut(key, ::defaultValue)
    }

[Andreas Sinz]

north: is this code inside a class?

[north]

yes

[Andreas Sinz]

are you running kotlin 1.1 or 1.0.6?

[north]

<kotlin.version>1.0.6</kotlin.version>

[north]

does this get better with kotlin 1.1?

[Andreas Sinz]

ok, so what you are basically trying to do is use the Instance-method defaultValue() as a static method, which is not possible. and references to instance-methods are not supported in 1.0.6, you'd need 1.1 for that

[north]

I see

[Andreas Sinz]

easiest way to work around it is to use myMap.getOrPut(key, { defaultValue() })

[north]

nice... thank you

[north]

looking forward to 1.1

[Andreas Sinz]

with 1.1 you can go with myMap.getOrPut(key, this::defaultValue)

[north]

that's what I first tried to fix it in 1.0.6 🙂

[north]

One last question on this topic. If I wanted to reference a function in 1.0.6 would it need to be defined at top level or in a closure? (so basically not an instance method from a class/object)