WG21-P2641R4 is_within_lifetime(): Checking If A Union Alternative Is Active
WG21-P3450R1 Extend is_within_lifetime()
Feature-test macro (in WG21-N5046; note that the original papers depicted a different macro name than what was ultimately merged by cplusplus/draft#6348 and cplusplus/draft#8881):
#define __cpp_lib_is_within_lifetime 202603L
Note: We are not yet accepting PRs for C++26 features.
WG21-P2641R4
is_within_lifetime(): Checking If A Union Alternative Is ActiveWG21-P3450R1 Extend
is_within_lifetime()Feature-test macro (in WG21-N5046; note that the original papers depicted a different macro name than what was ultimately merged by cplusplus/draft#6348 and cplusplus/draft#8881):
Note: We are not yet accepting PRs for C++26 features.