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From: "Steve D" <nospam_steved94@comcast.net>
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Subject: Re: Comparison Operators for Strings
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Date: Tue, 25 Aug 2009 18:37:06 -0700
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Date: 2009-08-25T18:37:06-07:00
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"Rick" <rickduley@gmail.com> wrote in message 
news:59ccf9ff-86ea-4179-8be3-a7f99218eeb5@q40g2000prh.googlegroups.com...
> How do the comparison operators for Strings (Fixed-length, Unbounded,
> whatever) actually work?  I am using Unbounded_String at the moment
> and in the LRM I find:
>
> 83 Each of the functions "=", "<", ">", "<=", and ">=" returns the
> same result as the corresponding String operation applied to the
> String values given or represented by Left and Right.
>
> I have checked LRM 2.6, 3.6.3, and A.4 to A.4.8 and I cannot find a
> result for a corresponding String operation.
>
> Where should I be looking?
>

LRM 4.5.2 Relational Operators an Membership tests
Paragraph (18)

The type "String" is nothing special and is defined in System:

type String is array(Positive range <>) of Character;
   pragma Pack(String);

You compare strings the same way as you can any other one dimensional array 
as described in 4.5.2(18)

Regards,
Steve

> --------------------------------------------
> Rick Duley
> North Perth,
> Western Australia
> http://rickduley.webs.com
> --------------------------------------------