* A quickie problem with an array and a right hand bracket @ 2001-06-11 17:08 chris.danx 2001-06-11 17:24 ` Ted Dennison ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: chris.danx @ 2001-06-11 17:08 UTC (permalink / raw) Hello everyone, I'm trying to provide an array for quickie conversion between numbers and character equivalents like this type array_16 is array (natural range 0..15) of character; basic_16 : constant array_16 := ('0'..'9'|'a'..'f'); The compiler corrected me on the use of a comma where the dda ("d divides a", from math sorry, it's a bar or more symbol) but this doesn't help with "unexpected parenthesis error" when it's compiled. What's the problem? It looks correct to me but clearly i am missing something (very subtle) point. In case i get the use text_io and tear off the start and end parts for displaying in other bases argument. I do not want to use text_io in this manner since i want to remove (as much as possible) dependance on the standard packages (for now). Thanks, Chris Campbell ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: A quickie problem with an array and a right hand bracket 2001-06-11 17:08 A quickie problem with an array and a right hand bracket chris.danx @ 2001-06-11 17:24 ` Ted Dennison 2001-06-11 22:45 ` Jeffrey Carter 2001-06-12 10:01 ` chris.danx 2 siblings, 0 replies; 4+ messages in thread From: Ted Dennison @ 2001-06-11 17:24 UTC (permalink / raw) In article <eV6V6.8331$6d5.1657665@news2-win.server.ntlworld.com>, chris.danx says... >I'm trying to provide an array for quickie conversion between numbers and >character equivalents like this > > type array_16 is array (natural range 0..15) of character; > > basic_16 : constant array_16 := ('0'..'9'|'a'..'f'); I don't think you can use the '|' character that way. I'm not sure what your right hand side would even mean if it were valid. Probably the easiest way to do this would be: basic_16 : constant array_16 := "0123456789abcdef"; Of course it would be even easier to just use "String" (or a subtype thereof) instead of making your own character array type. But you may have your reasons for that. --- T.E.D. homepage - http://www.telepath.com/dennison/Ted/TED.html home email - mailto:dennison@telepath.com ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: A quickie problem with an array and a right hand bracket 2001-06-11 17:08 A quickie problem with an array and a right hand bracket chris.danx 2001-06-11 17:24 ` Ted Dennison @ 2001-06-11 22:45 ` Jeffrey Carter 2001-06-12 10:01 ` chris.danx 2 siblings, 0 replies; 4+ messages in thread From: Jeffrey Carter @ 2001-06-11 22:45 UTC (permalink / raw) "chris.danx" wrote: > > Hello everyone, > > I'm trying to provide an array for quickie conversion between numbers and > character equivalents like this > > type array_16 is array (natural range 0..15) of character; > > basic_16 : constant array_16 := ('0'..'9'|'a'..'f'); > > The compiler corrected me on the use of a comma where the dda ("d divides a", > from math sorry, it's a bar or more symbol) but this doesn't help with > "unexpected parenthesis error" when it's compiled. What's the problem? It > looks correct to me but clearly i am missing something (very subtle) point. Your compiler is expecting something like ('0' .. '9' | 'a' .. 'f' => Some_Value) so hitting that right parenthesis is throwing it off. Later it would complain that the index type in the aggregate (characters) does not match the index type of Array_16 (Natural range 0 .. 15), but it's not getting to that point. Since Array_16 is a string type, you could simply use a string literal: Basic_16 : constant Array_16 := "0123456789abcdef"; You can also use a normal aggregate: Basic_16 : constant Array_16 := (0 => '0', 1 => '1', 2 => '2', 15 => 'f', 14 => 'e', 13 => 'd', 3 => '3', 4 => '4', 5 => '5', 12 => 'c', 11 => 'b', 10 => 'a', 6 => '6', 7 => '7', 8 => '8', 9 => '9'); -- Jeffrey Carter ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: A quickie problem with an array and a right hand bracket 2001-06-11 17:08 A quickie problem with an array and a right hand bracket chris.danx 2001-06-11 17:24 ` Ted Dennison 2001-06-11 22:45 ` Jeffrey Carter @ 2001-06-12 10:01 ` chris.danx 2 siblings, 0 replies; 4+ messages in thread From: chris.danx @ 2001-06-12 10:01 UTC (permalink / raw) Thanks all, Chris Campbell ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2001-06-12 10:01 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2001-06-11 17:08 A quickie problem with an array and a right hand bracket chris.danx 2001-06-11 17:24 ` Ted Dennison 2001-06-11 22:45 ` Jeffrey Carter 2001-06-12 10:01 ` chris.danx
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