<s>
C++23	B-Language
is	O
the	O
informal	O
name	O
for	O
the	O
next	O
version	O
of	O
the	O
ISO/IEC	O
14882	O
standard	O
for	O
the	O
C++	B-Language
programming	I-Language
language	I-Language
that	O
will	O
follow	O
C++20	B-Language
.	O
</s>
<s>
In	O
February	O
2020	O
,	O
at	O
the	O
final	O
meeting	O
for	O
C++20	B-Language
in	O
Prague	O
,	O
an	O
overall	O
plan	O
for	O
C++23	B-Language
was	O
adopted	O
:	O
planned	O
features	O
for	O
C++23	B-Language
are	O
library	O
support	O
for	O
coroutines	B-Architecture
,	O
a	O
modular	B-Architecture
standard	O
library	O
,	O
executors	O
,	O
and	O
networking	O
.	O
</s>
<s>
The	O
first	O
WG21	O
meeting	O
focused	O
on	O
C++23	B-Language
was	O
intended	O
to	O
take	O
place	O
in	O
Varna	O
in	O
early	O
June	O
2020	O
,	O
but	O
was	O
cancelled	O
due	O
to	O
the	O
COVID-19	O
pandemic	O
,	O
as	O
was	O
the	O
November	O
2020	O
meeting	O
in	O
New	O
York	O
and	O
the	O
February	O
2021	O
meeting	O
in	O
Kona	O
,	O
Hawaii	O
.	O
</s>
<s>
In	O
the	O
absence	O
of	O
face-to-face	O
WG21	O
meetings	O
,	O
few	O
new	O
features	O
have	O
so	O
far	O
been	O
added	O
to	O
the	O
C++23	B-Language
draft	O
.	O
</s>
<s>
Removing	O
unnecessary	O
empty	O
parameter	O
list	O
from	O
lambda	B-General_Concept
expressions	I-General_Concept
.	O
</s>
<s>
After	O
the	O
summer	O
2021	O
ISO	O
C++	B-Language
standards	O
plenary	O
virtual	O
meeting	O
of	O
June	O
2021	O
,	O
new	O
features	O
and	O
defect	O
reports	O
were	O
approved	O
by	O
straw	O
polls	O
:	O
</s>
<s>
Iterators	O
pair	O
constructors	O
for	O
(	O
stack	B-Application
)	O
and	O
(	O
queue	B-Application
)	O
.	O
</s>
<s>
After	O
the	O
autumn	O
2021	O
ISO	O
C++	B-Language
standards	O
plenary	O
virtual	O
meeting	O
of	O
October	O
2021	O
,	O
new	O
features	O
and	O
defect	O
reports	O
were	O
approved	O
by	O
straw	O
polls	O
:	O
</s>
<s>
Both	O
directives	O
were	O
added	O
to	O
C23	B-Language
(	O
C	B-Language
language	I-Language
update	O
)	O
and	O
GCC	B-Application
12	O
.	O
</s>
<s>
Overloading	O
multidimensional	O
subscript	O
operator	B-Language
(	O
e.g.	O
</s>
<s>
Use	O
of	O
forwarding	O
references	B-Language
in	O
format	O
arguments	O
to	O
allow	O
-like	O
types	O
.	O
</s>
<s>
Clarify	O
C	B-Language
headers	I-Language
.	O
</s>
<s>
"	O
The	O
headers	O
are	O
not	O
useful	O
in	O
code	O
that	O
is	O
only	O
required	O
to	O
be	O
valid	O
C++	B-Language
.	O
</s>
<s>
Therefore	O
,	O
the	O
C	B-Language
headers	I-Language
should	O
be	O
provided	O
by	O
the	O
C++	B-Language
standard	O
library	O
as	O
a	O
fully-supported	O
,	O
not	O
deprecated	O
part	O
,	O
but	O
they	O
should	O
also	O
be	O
discouraged	O
for	O
use	O
in	O
code	O
that	O
is	O
not	O
polyglot	O
interoperability	O
code	O
.	O
</s>
<s>
 [ .. ] 	O
This	B-Application
proposal	O
makes	O
the	O
C	B-Language
headers	I-Language
no	O
longer	O
deprecated	O
,	O
so	O
there	O
is	O
no	O
formal	O
threat	O
of	O
future	O
removal	O
.	O
</s>
<s>
The	O
effective	O
discouragement	O
to	O
use	O
the	O
C	B-Language
headers	I-Language
in	O
pure	O
C++	B-Language
code	I-Language
is	O
now	O
spelled	O
out	O
explicitly	O
as	O
normative	O
discouragement.	O
"	O
</s>
<s>
Simplified	O
some	O
implicit	O
move	O
rules	O
from	O
C++20	B-Language
and	O
allowed	O
implicit	O
move	O
when	O
returning	O
an	O
rvalue	O
reference	O
.	O
</s>
<s>
Allowed	O
operator	B-Language
to	O
be	O
.	O
</s>
<s>
Allowed	O
the	O
this	B-Application
pointer	I-Application
and	O
references	B-Language
of	O
unknown	O
origin	O
to	O
appear	O
in	O
constant	O
expressions	O
.	O
</s>
<s>
Allowed	O
implementations	O
to	O
define	O
extended	O
floating-point	B-Algorithm
types	O
in	O
addition	O
to	O
the	O
three	O
standard	O
floating-point	B-Algorithm
types	O
.	O
</s>
<s>
Added	O
the	O
type	O
aliases	O
std::float16_t	O
,	O
std::float32_t	O
,	O
std::float64_t	O
,	O
std::float128_t	O
,	O
std::bfloat16_t	O
for	O
these	O
extended	O
types	O
accessible	O
through	O
the	O
header	O
<stdfloat>	O
,	O
their	O
corresponding	O
literal	O
suffixes	O
f16	O
f32	O
f64	O
f128	O
bf16or	O
F16	O
F32	O
F64	O
F128	O
BF16	O
and	O
added	O
overloads	O
to	O
various	O
standard	O
library	O
functions	O
that	O
take	O
floats	B-Algorithm
as	O
arguments	O
.	O
</s>
<s>
Allowed	O
arrays	O
of	O
and	O
to	O
be	O
initialized	O
with	O
UTF-8	O
string	B-Language
literals	I-Language
.	O
</s>
<s>
Removed	O
the	O
requirement	O
that	O
can	O
encode	O
all	O
characters	O
of	O
the	O
extended	O
character	O
set	O
,	O
in	O
effect	O
allowing	O
UTF-16	O
to	O
be	O
used	O
for	O
wide	O
string	B-Language
literals	I-Language
.	O
</s>
<s>
Provide	O
the	O
named	O
modules	B-Architecture
and	O
for	O
importing	O
the	O
standard	O
library	O
.	O
</s>
<s>
Allowed	O
operator	B-Language
to	O
be	O
.	O
</s>
<s>
Removed	O
the	O
garbage	O
collection	O
support	O
that	O
was	O
added	O
in	O
C++11	O
,	O
despite	O
many	O
GC	O
implementations	O
available	O
for	O
C++	B-Language
;	O
"	O
Garbage	O
Collection	O
in	O
C++	B-Language
is	O
clearly	O
useful	O
for	O
particular	O
applications	O
.	O
</s>
