Re: charconv for C++11

From: Gavin Lambert (boost_at_[hidden])
Date: 2023-05-12 00:52:15

Mere moments ago, quoth I:
>> Hex format will be of the form +1.0e2p+5. The integer part will
>> always be 0 or 1. The exponent will be with a p instead of an e like
>> in base 10 formats.
> This is some strange definition of "hex" with which I was previously 
> unfamiliar.
> 
> It also contradicts itself, by saying "a p instead of an e" while the 
> example contains both.  (And isn't a very good example, lacking actual 
> hex digits.)

It later occurred to me that the "e" could be intended as a hex digit, 
thus "1.0e2 with exponent +5".

This still makes it a poor example, though.  It might perhaps be 
intended as an example of a vexing parse, but in that case it shouldn't 
be the *only* example (and perhaps should be elsewhere).

(Also, FWIW, gcc fails to parse that with the leading +.  And I couldn't 
even find any online calculators that understand this format.)