Search:
Reference
<system_error>
make_error_code
function
<system_error>
std::
make_error_code
error_code make_error_code (errc e) noexcept;
Make error code
Creates an
error_code
object (of the
generic_category
) from the
errc
enum value
e
.
It returns the same as
error_code(
static_cast
<
int
>(e),generic_category());
This function is called by
error_code
's constructor for
error code enum
types, and should be overloaded for all custom
error code enum
types defined in order to provide a mechanism to generate the appropriate
error_code
objects from them.
The standard library overloads this function for the
io_errc
and
future_errc
types: see
make_error_code(io_errc)
and
make_error_code(future_errc)
.
Parameters
e
An enum value of type
errc
(see
errc
).
Return value
An
error_code
object representing the enum value
e
.
See also
error_code::error_code
Construct error_code
(public member function )
C++
Information
Tutorials
Reference
Articles
Forum
Reference
C library:
<cassert> (assert.h)
<cctype> (ctype.h)
<cerrno> (errno.h)
<cfenv> (fenv.h)
<cfloat> (float.h)
<cinttypes> (inttypes.h)
<ciso646> (iso646.h)
<climits> (limits.h)
<clocale> (locale.h)
<cmath> (math.h)
<csetjmp> (setjmp.h)
<csignal> (signal.h)
<cstdarg> (stdarg.h)
<cstdbool> (stdbool.h)
<cstddef> (stddef.h)
<cstdint> (stdint.h)
<cstdio> (stdio.h)
<cstdlib> (stdlib.h)
<cstring> (string.h)
<ctgmath> (tgmath.h)
<ctime> (time.h)
<cuchar> (uchar.h)
<cwchar> (wchar.h)
<cwctype> (wctype.h)
Containers:
<array>
<deque>
<forward_list>
<list>
<map>
<queue>
<set>
<stack>
<unordered_map>
<unordered_set>
<vector>
Input/Output:
<fstream>
<iomanip>
<ios>
<iosfwd>
<iostream>
<istream>
<ostream>
<sstream>
<streambuf>
Multi-threading:
<atomic>
<condition_variable>
<future>
<mutex>
<thread>
Other:
<algorithm>
<bitset>
<chrono>
<codecvt>
<complex>
<exception>
<functional>
<initializer_list>
<iterator>
<limits>
<locale>
<memory>
<new>
<numeric>
<random>
<ratio>
<regex>
<stdexcept>
<string>
<system_error>
<tuple>
<type_traits>
<typeindex>
<typeinfo>
<utility>
<valarray>
<system_error>
classes:
error_category
error_code
error_condition
is_error_code_enum
is_error_condition_enum
system_error
enum classes:
errc
functions:
generic_category
make_error_code
make_error_condition
system_category