hey. where can i read how does this works: ? ```kotlin InputDecoration(color=if(isValid) blue else r...

# getting-started

[Márk Bartos]

hey. where can i read how does this works: ?

kotlin
InputDecoration(color=if(isValid) blue else red) {
    Input(value, onChange)
  }

[Márk Bartos]

I mean the block after the function call.

[Roukanken]

I guess you mean a general idea on the language feature? (and no something specific to the library)

[Márk Bartos]

yes

[Juliane Lehmann]

That's a trailing lambda - https://kotlinlang.org/docs/lambdas.html#passing-trailing-lambdas

[Roukanken]

Official docs to this feature: https://kotlinlang.org/docs/lambdas.html#passing-trailing-lambdas

[Márk Bartos]

thank you

[Roukanken]

But TL;DR: if functions accepts lamba as last argument, then you can write:

func(args) { parameters -> TODO!() }

instead of equivalent code of:

func(args, { parameters -> TODO!() })

[Bence Erős]

afaict this feature was added to the language to be able to define functions that look like control structures for the reader