Hands-On Design Patterns with Kotlin

Run

Not related to threads in any way, run() is much like let(), but it sets the context to this instead of using it:

val justAString = "string"val n = justAString.run {     this.length}

Usually, this could be omitted:

val n = justAString.run {     length}

It is mostly useful when you plan to call a number of methods on the same object, much like apply().

The return result, unlike apply(), may be of a totally different type, though:

val year = JamesBond().run {    name = "ROGER MOORE"    movie = "THE MAN WITH THE GOLDEN GUN"    1974 // <= Not JamesBond type}