< tipsy> ``` if keys contains null return null else return k kotlinlang #announcements

<@U3W8YSSSV> ``` if(keys.contains(null)) retur...

karelpeeters

08/01/2017, 4:53 PM

@tipsy

Copy code

if(keys.contains(null))
    return null
else
    return keys.map(f)

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