[Mlir-commits] [mlir] [MLIR][Python] Improve Iterator performance. Don't `throw` in `dunderNext` methods. (PR #175377)

[Maksim Levental]

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@@ -194,13 +194,14 @@ nb::object PyBlock::getCapsule() {
 // Collections.
 //------------------------------------------------------------------------------
 
-PyRegion PyRegionIterator::dunderNext() {
+nb::typed<nb::object, PyRegion> PyRegionIterator::dunderNext() {
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makslevental wrote:

can't these just be `std::optional<PyRegion>` and the like? That way you wouldn't have to do an `nb::cast`...

https://github.com/llvm/llvm-project/pull/175377