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CTL: utility.h, use ctl::swap in string (#1227)

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* Add ctl utility.h

Implements forward, move, swap, and declval. This commit also adds a def
for nullptr_t to cxx.inc. We need it now because the CTL headers stopped
including anything from libc++, so we no longer get their basic types.

* Use ctl::swap in string

The STL spec says that swap is located in the string_view header anyawy.
Performance-wise this is a noop, but it’s slightly cleaner.
This commit is contained in:
Steven Dee (Jōshin) 2024-06-18 22:00:59 -07:00 • committed by GitHub
parent a795017416
commit 9a5a13854d
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GPG key ID: B5690EEEBB952194
13 changed files with 117 additions and 46 deletions
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4
test/ctl/optional_test.cc
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@ -63,7 +63,7 @@ main()
{
ctl::optional<ctl::string> x("world");
ctl::optional<ctl::string> y(std::move(x));
ctl::optional<ctl::string> y(ctl::move(x));
if (!y)
return 9;
if (!y.has_value())
@ -87,7 +87,7 @@ main()
{
ctl::optional<ctl::string> x("hello");
ctl::optional<ctl::string> y;
y = std::move(x);
y = ctl::move(x);
if (!y)
return 16;
if (!y.has_value())