Add ZIO#provideM #1522
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Add ZIO#provideM #1522
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As discussed on Gitter, this PR adds a
provideMmethod onZIOandZStreamthat provides all of the required environment to an effect where the act of creating the environment itself requires an effect. This can already be accomplished usingflatMapand thenprovideorprovideSomeMbut I think this is a nice convenience method. UsingflatMapand thenprovidecan sometimes generate spurious warnings about types being inferred asAny. And whileprovideSomeMworks, the name doesn't make clear that you can or are providing the whole environment and the compiler won't enforce that the whole environment has been provided.Overall I think understanding how to work with the environment parameter is one of the harder things for newcomers so we should make it as easy as possible.