Rxjava: filter + map in a single operator

[aballano]

Hello there!

I've seen several times (specially when working with Buses or generic events) this kind of method chain:

observable.filter(clazz::isInstance).map(clazz::cast)

Would make sense to have another operator that does this already? Something like a filterClass or similar?

If so I could gladly create a PR with all the needed changes.

Cheers!

[artem-zinnatullin]

There is already operator for your case: ofType().

On Thu, 11 Aug 2016, 15:04 Alberto Ballano, [email protected]
wrote:

Hello there!

I've seen several times (specially when working with Buses or generic
events) this kind of method chain:

observable.filter(clazz::isInstance).map(clazz::cast)

Would make sense to have another operator that does this already?
Something like a filterClass or similar?

If so I could gladly create a PR with all the needed changes.

Cheers!

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[aballano]

Ouch, I must be blind, thank you Artem!

[davidmoten]

This has come up before and i always forget it exists. For discoverability
purposes I'd support the addition of an alias method (preferably beginning
with filter).

On Thu, 11 Aug 2016, 22:48 Alberto Ballano [email protected] wrote:

Closed #4341 https://github.com/ReactiveX/RxJava/issues/4341.

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