Re: When to use Bounded_String?

["J-P. Rosen" <rosen@adalog.fr>]

Le 19/11/2017 à 10:55, Niklas Holsti a écrit :
> On 17-11-19 04:19 , Victor Porton wrote:
>> What is the main purpose of Bounded_String?
> 
> As I understand it, the purpose is to let a program use string variables
> of dynamically varying length, without using dynamically allocated heap
> memory. The penalty is a fixed upper bound on the length, and perhaps
> more copying of characters from one variable to another (depending on
> the implementation).
> 
No, it's not just a matter of implementation. Bounded_String are a good
fit for data types implemented as strings. A typical example is name,
address, etc. from a person's data. These are represented as strings,
you need variable length, and there is generally a maximum length
(comming f.e. from the declaration in the underlying database).

Note that each instantiation provides a different type, so you cannot
assign a name to an address.
-- 
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr