Add experimental support for get_mapped_range #522
Merged
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Relates to #513
This adds the API that I was reluctant to add, because its prone to the user (accidentally) using the mapped array after it becomes unmapped. However, there are potential performance benefits. I want us (and others) to be able to investigate its use.
My proposal is to add it as an experimental and undocumented method. In time, when we know more about how useful it is, we can think about a public API for (something like) this.
Also adds an unrelated comment to
_poll()
.