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I noticed to my glee that C++11 has a std::sto@ family of functions for easily unpacking ints/floats/longs whatever from strings. I'm surprised however, that the opposite isn't implemented. Why didn't the standards committee include a std::itos family of functions for going from ints/floats/whatever (back) to strings?

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up vote 30 down vote accepted

I was mistaken, there is a set of "Xtos" functions, they are all just named to_string. Each to_string is overloaded to take a different basic type, i.e.:

std::string to_string(float f);
std::string to_string(int f);
...

See here for more info.

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Which leaves the question why the stoX functions were named such awkwardly instead of providing a matching generic from_string<T> specialized for each arithmetic type T. – 5gon12eder Mar 9 at 1:59

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