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From: Matthew Heaney <matthew_heaney@acm.org>
Subject: Re: String to Integer conversion?
Date: 1998/07/31
Message-ID: <m37m0vvubh.fsf@mheaney.ni.net>#1/1
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Sender: matt@mheaney.ni.net
References: <c1.2b8.2Lzh62$03A@zesi.ruhr.de>
 <6ndi5d$uj3@gcsin3.geccs.gecm.com>
NNTP-Posting-Date: Thu, 30 Jul 1998 22:33:11 PDT
Newsgroups: comp.lang.ada
Date: 1998-07-31T00:00:00+00:00
List-Id: <comp.lang.ada>

John McCabe <john@assen.demon.co.uk> writes:

> Integer_IO provides versions of the Get and Put routines where the first 
> parameter is a string, so you need to instantiate Integer_IO for your 
> Integer Type ( or use Ada.Integer_Text_IO for the pre-defined type 
> Integer) then call the Get operation e.g.

In Ada 95 you don't need to instantiate Integer_IO on type Integer.  An
instantiation of Integer_IO, called Ada.Integer_Text_IO, comes
predefined as part of the standard library.

Ditto for type Float; there's a predefined instantiation called
Float_Text_IO.

Q for language lawyers: why no predefined instantiation of Fixed_IO for
type Duration?

As an alternative solution to the problem of converting a string to an
integer, you can use the attribute Integer'Value.