Implement formatter
specializations for container adaptors
#4825
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Completes WG21-P2286R8. Implements LWG-3881 and LWG-3750. Fixes #2919.
Unblocks libcxx tests:
std/containers/container.adaptors/container.adaptors.format/format.functions.format.pass.cpp
std/containers/container.adaptors/container.adaptors.format/format.functions.vformat.pass.cpp
std/containers/container.adaptors/container.adaptors.format/parse.pass.cpp
std/containers/container.adaptors/container.adaptors.format/types.compile.pass.cpp
std/utilities/format/format.formattable/concept.formattable.compile.pass.cpp