Re: An Example for Ada.Execution_Time

["Randy Brukardt" <randy@rrsoftware.com>]

"BrianG" <briang000@gmail.com> wrote in message 
news:ifbi5c$rqt$1@news.eternal-september.org...
...
> I asked for:
>    >> An algorithm comparison program might look like:
>    >>
>    >> with Ada.Execution_Time ;
>    >> with Ada.Execution_Time.Timers ;
>    >Given the below program, please add some of the missing details to
>    >show how this can be useful without also "with Ada.Real_Time".
>    >Neither Execution_Time or Execution_Time.Timers provides any value
>    >that can be used directly.

This seems like a totally silly question. There are a lot of well-designed 
packages in Ada that don't do anything useful without at least one or more 
other packages. Indeed, if you consider "Standard" to be a separate package 
(and it is), there are hardly any packages that *don't* require some other 
package to be useful.

More to the point, you probably need Ada.IO_Exceptions to use 
Ada.Directories effectively (use of any package without error handling is 
toy use); Ada.Streams.Stream_IO require use of Ada.Streams (a separate 
package, which you will need separate use clauses for even if you get it 
imported automatically); Ada.Strings.Maps aren't useful for anything unless 
you combine them with one of the string handling packages, and so on.

Perhaps you would have been happier if Ada.Execution_Time had been a child 
of Ada.Real_Time (exactly as in the string case), but this wouldn't change 
anything.

The odd thing is that Duration is defined in Standard, rather than some more 
appropriate package. Giving this some sort of religious importance is beyond 
silly...

                                   Randy.