string str = convert<string>(123,BASE_16);
template<typename ReturnType, typename InputType>
ReturnType convert(const InputType, const size_t base);
string str;
convert(123,str,BASE_16);
template<typename ReturnType, typename InputType>
void convert(const InputType src,ReturnType& dest, const size_t base);
Quote:Original post by theOcelot
What on earth do you prefer #2 for? The only time I consider anything like that is when I don't want to copy some big object for a return value, and even then creating and initializing the variable on two lines is annoying.
// Ugly version for people who have identified a needtemplate<typename ReturnType, typename InputType>void convert(const InputType& src, ReturnType& dest, const size_t base) { // evil conversion logic}// Pretty version for people who like pretty codetemplate<typename ReturnType, typename InputType>ReturnType convert(const InputType& src, const size_t base) { ReturnType result; convert(src, result, base); return result;}Quote:Original post by AntheusQuote:Original post by theOcelot
What on earth do you prefer #2 for? The only time I consider anything like that is when I don't want to copy some big object for a return value, and even then creating and initializing the variable on two lines is annoying.
One would use #2 when trying to avoid redundant heap allocations when parsing a lot of text, perhaps hundreds of thousands of lines, thereby reducing running time by a factor of 10.
