Hi anyone knows why there s no `onEach` function for `Receiv kotlinlang #coroutines

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Title

l

louiscad

07/05/2018, 8:17 AM

Hi, anyone knows why there's no

onEach

function for

ReceiveChannel

?

s

spand

07/05/2018, 8:57 AM

Cant you just iterate it?

for (msg in channel) {
msg.stuff() 
}

l

louiscad

07/05/2018, 9:09 AM

I can, but it doesn't chain well with

filter

and other operations. I saw it would not be enough to satisfy my use case anyway, so I went with a simple

consumeEach

and additional collections for blacklisting part of the elements

w

withoutclass

07/05/2018, 2:56 PM

Be careful with

consumeEach

since it will close the channel if the coroutine you’re reading from exits/is canceled

The hard part of an

onEach

may be composability, for instance you’d probably need it at the start of the chain, because it’ll end up being something like iterating on the channel, doing some action, then returning the item

Or returning a new channel that you then need to iterate over as well

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