31
Input/output library
[input.output]
31.12
File systems
[filesystems]
31.12.3
Requirements
[fs.req]
1
#
Throughout subclause
[filesystems]
,
char
,
wchar_
t
,
char8_
t
,
char16_
t
, and
char32_
t
are collectively called
encoded character types
.
2
#
Functions with template parameters named
EcharT
shall not participate in overload resolution unless
EcharT
is one of the encoded character types
.
3
#
Template parameters named
InputIterator
shall meet the
Cpp17InputIterator
requirements (
[input.
iterators]
) and shall have a value type that is one of the encoded character types
.
4
#
[
Note
1
:
Use of an encoded character type implies an associated character set and encoding
.
Since
signed
char
and
unsigned
char
have no implied character set and encoding, they are not included as permitted types
.
—
end note
]
5
#
Template parameters named
Allocator
shall meet the
Cpp17Allocator
requirements (
[allocator.
requirements.
general]
)
.