`a b` is a shorthand for `if a == null null else a b` so the kotlinlang #announcements

`a?.b` is a shorthand for `if (a == null) null els...

karelpeeters

12/02/2017, 9:53 AM

a?.b

is a shorthand for

if (a == null) null else a.b

so the type of

a?.b

is nullable whether b itself was originally nullable or not.

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