Em segunda-feira, 10 de abril de 2017, às 13:27:05 PDT, Matthew Woehlke
escreveu:
> Option 2: Teach C++ to choose automatically if such types should be
> passed by value or by const-reference.
That's what I did to QVector.
typedef typename std::conditional<std::is_fundamental<T>::value ||
std::is_pointer<T>::value, T, const T &>::type parameter_type;
value_type value(int i, parameter_type defaultValue) const Q_DECL_NOEXCEPT
{ return size_t(i) < d->size ? at(i) : defaultValue; }
--
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
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