forked from boostorg/function
- When enable_if is not supported, supply an int version of the constructor
and assignment operator so that the '= 0' or construct-with-0 syntax is
usable
[SVN r16613]
- When enable_if is not supported, supply an int version of the constructor
and assignment operator so that the '= 0' or construct-with-0 syntax is
usable
[SVN r16613]