Subject: Re: [boost] Variadic append for std::string
From: Christof Donat (cd_at_[hidden])
Date: 2017-01-25 12:44:33
Hi,
Am 25.01.2017 18:37, schrieb Richard Hodges:
>> The string factories, of course need more than only begin() and end().
>> They also have to provide a way to estimate the size of the output,
>> because
>> we want to be able to allocate the complete buffer upfront. In the
>> naive
>> implementation I called that size().
>
> If you have size(), it means you know the size because the conversion
> work
> has already been done.
I think, it is fine, if it returns a reasonable upper bound, like e.g. 4
for a 16 bit value in hex representation. It is just meant, to make
sure, that we can allocate enough memory upfront, and avoid calls to
realloc().
Christof