P2642: LWG 2024/02/28 review #450
Description
P2642: LWG 2024/02/28 review
Changes from previous review
"Paragraph numbers are off at the top of the wording." (This is still the case; it awaits more time for formatting.)
LWG is pleased on 2024/02/28. Also pleased with the updated green diff style.
Extra LEAST-MULTIPLE-AT-LEAST condition on constructors.
Paragraphs 6 and 9 of observers now use preferred if/else/otherwise format.
Resuming
Converting ctor from layout_stride::mapping to layout_right_padded::mapping.
11.1 needs a period; make it a complete sentence. Preconditions generally have implicit and between them, so each can be a complete sentence.
18.1 has a missing closing backtick for true. Also, make those Constraints each a stand-alone sentence, just like the preconditions. (Constraints for converting constructor from LayoutLeftPaddedMapping.)
20: Capital letter for direct-non-list-initializes.
21: Remove space between ! and rest of expression.
Note after 21: "... affects neither the constraints nor the preconditions."
[mdspan.layout.rightpadded.obs]
Wording for strides() could declare the function on one line instead of two.
Para 2 Returns: Reformat as one sentence, since it's just two bullets. (Just remove the bullets; leave the current structure.)
(Just for future reference: para 5 is by-construction correct because of the new Mandates and Preconditions.)
Para 9 under stride is a bit wacky, but OK to leave alone, since it's consistent with Ranges. (Add an entry to the Editorial Wiki about this.)
[mdspan.submdspan.mapping]
(Corresponding to 4.2, there was a bug in the current draft. They actually need to be ordered.)
Add a drafting Note to explain that 4.2 is a drive-by fix, an intentional deviation from the current Draft that LWG reviewed and approved.
layout_right specialization of submdspan_mapping, para 1.3, first inner bullet: Add a comma, as with layout_left above, to separate out the values.