tree 1f041dc425a4703c6fd880caf7fe381ee44e1195
parent 797c25ea86f2ba4b6423f1d8d3d42be7f578ac03
author Christopher Di Bella <cjdb@google.com> 1620973207 +0000
committer Copybara-Service <copybara-worker@google.com> 1623871879 -0700

[libcxx][ranges] removes default_initializable from weakly_incrementable and view

also:

* removes default constructors from predefined iterators
* makes span and string_view views

Partially implements P2325.
Partially resolves LWG3326.

Differential Revision: https://reviews.llvm.org/D102468

GitOrigin-RevId: 462f8f06113616ac5646144972d3f453639aac69