sometimes you just want to use the result of the l...

# random

[kevinmost]

sometimes you just want to use the result of the left-hand-side inside of a lambda whether or not it's null

[oshai]

Not sure I got that, can you give an example?

[oshai]

Do you mean to use let for non nullable types?

[voddan]

veryLongExpression.let {println(it)}

[voddan]

This is the intended use of let

[voddan]

?.let was advertised as a get-away drug for Swift people who are used to if let = .. {}

[kevinmost]

Right, let is used to capture the value of the left-hand-side into a param of a lambda. It's meant to be a replacement for constructs you see everywhere like:

val storedValue = longComputation()
/* use storedValue */

that way you have scoping for that val and you don't end up with a bunch of local vals polluting your namespace

[kevinmost]

it's also an added bonus that because of ?. you can use it for null-checking