Introduce stream::select_with_strategy #2450
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The current select function only supports round robin. To change that would be a breaking change, so for now I propose a `select_bias` which takes a closure that defines the selection strategy. - When a breaking change is planned, we could re-consider this, but it does have 4 generic parameters of which one is a closure, compared to the 2 streams in `select`. - note the name select_bias. It's not consistent with `select_biased` used elsewhere in the lib. This can obviously be changed, but I feel the "ed" at the end does not add any semantic value but makes function names longer. - There isn't really integration tests included right now, but the examples in the docs get tested by doc test.
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Thanks for the PR! The implementation looks good to me.
- I feel a name like
select_with_strategywould be more good because it is the user who decides whether this is biased or not. - Is it possible to use this as an internal implementation of
select? (without breaking change)
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This allows not to print the closure and give `Select` a derive impl.
The result for `Select` looks like:
`Select { inner: SelectWithStrategy { stream1: Fuse { stream: Repeat { item: 1 }, done: false }, stream2: Fuse { stream: Repeat { item: 2 }, done: false } } }`
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| #[pin] | ||
| stream2: Fuse<St2>, | ||
| state: State, | ||
| clos: Clos, |
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Is this a typo for close?
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It's the generic representing the closure. So not a typo. Of course another name can be chosen. I don't really care about what it's called.
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Published in 0.3.16. |
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The current stream::select function only supports round robin. To change that
would be a breaking change, so for now I propose a
select_biaswhichtakes a closure that defines the selection strategy.
does have 4 generic parameters of which one is a closure, compared to
the 2 streams in
select. We could also reimplementselecton top of this,we just need to deal with hiding the generics of the closure, but I reckon a
function pointer can be named and we don't need to capture anything....
select_biasedusedelsewhere in the lib. This can obviously be changed, but I feel the "ed"
at the end does not add any semantic value but makes function names
longer.
in the docs get tested by doc test.