22 General utilities library [utilities]

22.10 Function objects [function.objects]

22.10.17 Polymorphic function wrappers [func.wrap]

22.10.17.5 Copyable wrapper [func.wrap.copy]

22.10.17.5.1 General [func.wrap.copy.general]

1
#
The header provides partial specializations of copyable_function for each combination of the possible replacements of the placeholders cv, ref, and noex where
  • (1.1)
    cv is either const or empty,
  • (1.2)
    ref is either &, &&, or empty, and
  • (1.3)
    noex is either true or false.
2
#
For each of the possible combinations of the placeholders mentioned above, there is a placeholder inv-quals defined as follows:
  • (2.1)
    If ref is empty, let inv-quals be cv&,
  • (2.2)
    otherwise, let inv-quals be cv ref.