How does `val that : Int -> Int = { three ->...

# getting-started

[Sudhir Singh Khanger]

How does val that : Int -> Int = { three -> three } fit the definition val lambdaName : Type = { argumentList -> codeBody }?
https://www.baeldung.com/kotlin-lambda-expressions

[nfrankel]

the type is (Int -> Int)
it’s a higher order function
that takes a Int as a parameter and returns an Int
it’s defined as a function that returns the same value as its argument: the identity function

[nfrankel]

don’t be puzzled by {three -> three}
it could have been written {one -> one }
or {it -> it }
and since it is the default parameter name
{it}

[Sudhir Singh Khanger]

Parameter is that of type higher-order function (Int -> Int) and we have a function which takes one argument three and returns three. Is that correct?

[nfrankel]

yes

[Sudhir Singh Khanger]

Thanks. This will take some time to imbibe and for me to be able to use them.