```attachments fold attachments as Collection lt String gt a kotlinlang #language-proposals

```attachments.fold(attachments as Collection<S...

aimozg

02/07/2017, 4:14 PM

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attachments.fold(attachments as Collection<String>?){ arr, it -> if (it == null) null else arr }

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aimozg

02/07/2017, 4:17 PM

http://i.imgur.com/VxnljGc.png▾

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