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Comment by seanalltogether | Hacker News Reader

Does it have an equivalent to Swifts if let clause?

    if let person = selection?.organization?.owner {
        setTitle(person.name)
        setImage(person.image)
    }

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Yes.

    val person = selection?.organization?.owner?.let {
        setTitle(it.name)
        setImage(it.image)
        it
    }

You can use `also` instead of `let` to remove the last `it` line.

You may use `also`. It is like let but it returns the receiver.

    val person = selection?.organization?.owner?.also {
        setTitle(it.name)
        setImage(it.image)        
    }

ok so I'm guessing you can't operate on more then one scope at once?

    if let person1 = dashboard?.owner, person2 = selection?.organization?.owner {
    	person1.cloneProperties(person2)
    }

You'd use nested let clauses and name the param instead of using the implicit "it"

Or just write a function to accomplish the same behavior: http://stackoverflow.com/a/35522422/364135

Would be nice if there was a multiLet in the stdlib. Probably something that happens eventually anyways.

Is this setting a value to the name `person`? What is the value?

selection?.organization?.owner is an optional value, meaning it might be nil/null. That "if let" basically says if it's not nil to assign its value to "person" and execute the block. Then inside the block you can treat "person" as a non-optional, known value.

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