Tune extensions for streams with variance annotation (out). (#13)

gojuno / koptional

Minimalistic Optional type for Kotlin that tries to fit its null-safe type system as smooth as possible.

Apache License 2.0

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Closed nostra13 closed 7 years ago

artem-zinnatullin commented 7 years ago

@dmitry-novikov @ming13 what are we waiting for in this PR?