Sound a lot like inlined lambdas in Kotlin. Lambdas can be passed with the same block-like syntax, and when they're marked as "inline" you can return from the e

Sound a lot like inlined lambdas in Kotlin. Lambdas can be passed with the same block-like syntax, and when they're marked as "inline" you can return from the enclosing function from within the lambda (because the lambda will have its body inlined by the compiler).