How come does `run` work with references that accept an argument, even though it’s defined as `T.run...

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[arekolek]

How come does run work with references that accept an argument, even though it’s defined as T.run(block: T.() -> R): R = block()?

[ilya.gorbunov]

The functional types (T) -> R and T.() -> R are assignment compatible.

[arekolek]

Thanks, any place where one can read more about that?

[ilya.gorbunov]

Can't find anything about it. Probably the function types http://kotlinlang.org/docs/reference/lambdas.html#function-types section should be extended.