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Subject: Re: [boost] [string] proposal
From: Alexander Lamaison (awl03_at_[hidden])
Date: 2011-01-22 08:43:37


On Fri, 21 Jan 2011 15:31:16 -0600, Nevin Liber wrote:

> On 21 January 2011 10:55, Dave Abrahams <dave_at_[hidden]> wrote:
>
>>
>> Do you want to prevent
>> 1. wholesale mutation such as
>>
>> x = y
>> x += y
>>
>> or just
>>
>> 2. per-char mutation such as
>>
>> x[10] = 'a'
>>
>> ?
>>
>
> Eliminating #2 but not #1 would force c_str() to make a (possibly tracked)
> copy, to avoid #2 on its internal buffer (due to the trailing '\0' byte).

Why does the trailing '\0' affect anything. It could store the immutable
string data internally in a buffer that has an extra '\0'. The time it
considers this '\0' to be part of the data is on a call to c_str().

Alex

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