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From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: Ambiguous expressions - Help!
Date: Tue, 24 Sep 2013 11:37:21 -0700
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Date: 2013-09-24T11:37:21-07:00
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On 09/24/2013 10:38 AM, Mike H wrote:
>
> Compilation of Foo3 raises error messages of the form "ambiguous
> expression (cannot resolve "Put_line")
>
> I find it hard to believe that the compiler cannot distinguish between a
> string and an array of characters. What am I doing wrong?

Any one-dimensional array with components of a character type is a string type. 
Every string type has corresponding literals. String is a string type, but one 
can declare other string types.

Grid_Type is a string type, and "Something else" may be a literal of type 
Grid_Type. It might also be a literal of type String. Hence the compiler cannot 
determine which Put_Line is intended. You can help it by writing

Foo2.Put_Line (Item => Foo1.Grid_Type'("Something else") );

(unless you meant the other Put_Line).

-- 
Jeff Carter
"He didn't get that nose from playing ping-pong."
Never Give a Sucker an Even Break
110