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Newsgroups: comp.lang.ada
Subject: Re: Unary operator after binary operator: legal or not?
References: <KYtri.46105$Fc.35820@attbi_s21>
From: development-2006-8ecbb5cc8aREMOVETHIS@ANDTHATm-e-leypold.de (Markus
 E.L.)
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Date: Tue, 31 Jul 2007 01:39:17 +0200
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Date: 2007-07-31T01:39:17+02:00
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> Here's something confusing I encountered:
>
> with Ada.Strings.Unbounded;
>
> function Xyz (Left, Right : in Ada.Strings.Unbounded.Unbounded_String)
> return String is
>     function "+" (Right : in Ada.Strings.Unbounded.Unbounded_String)
>     return String renames Ada.Strings.Unbounded.To_String;
> begin -- Xyz
>     if +Left <= +Right then
>        return +Left & +Right;
>        --            ^ Error reported here.
>     end if;
> end Xyz;
>
> A compiler reports "missing operand", referencing the space after the "&".
>
> Why then does it accept the comparison in the previous line? Both are
>
> +Left [binary operator] +Right

Precedence?

Regards -- Markus