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From: "Frank J. Lhota" <NOSPAM.FrankLho@rcn.com>
Subject: Re: if X in 1..35000 versus Boolean
Date: Sat, 13 Jul 2002 12:27:03 -0400
Date: 2002-07-13T16:27:13+00:00	[thread overview]
Message-ID: <agpkd1$h69$1@bob.news.rcn.net> (raw)
In-Reply-To: pan.2002.07.13.17.22.41.883061.2237@gmx.net

> if X in 1..35000 then
>
> is the same as
>
> if (X >= 1) and (X <= 35000) then
>
> ???
>
> Or does the compiler really create an enumeration type with 35000 entries
> with values from 1 to 35000, just to check if X is in there???

Yes, every compiler I know of will evaluate

    X in 1 .. 35000

as

    X >= 1 and then x <= 35000

Also, 1 .. 35000 is an integer range, not an enumeration type.







  reply	other threads:[~2002-07-13 16:27 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-13 19:10 if X in 1..35000 versus Boolean Jan Prazak
2002-07-13 16:27 ` Frank J. Lhota [this message]
2002-07-13 20:36   ` Jan Prazak
2002-07-13 18:05     ` Jeffrey Carter
2002-07-14 15:02       ` Jan Prazak
2002-07-13 22:10     ` Robert Dewar
2002-07-14 21:16       ` Jan Prazak
2002-07-14 20:47         ` Frank J. Lhota
2002-07-15  1:21         ` Jeffrey Carter
2002-07-16  8:18     ` Keith Thompson
2002-07-16 13:54       ` Jan Prazak
2002-07-16 11:13         ` Lutz Donnerhacke
2002-07-17 19:04           ` Jan Prazak
2002-07-17 20:00             ` Georg Bauhaus
2002-07-18  8:11             ` Lutz Donnerhacke
2002-07-18 14:39               ` Georg Bauhaus
2002-07-20  0:37               ` Robert Dewar
2002-07-16 20:25         ` Georg Bauhaus
2002-07-17 19:29           ` Jan Prazak
2002-07-16 19:24       ` Gautier
2002-07-17 19:04         ` Jan Prazak
2002-07-13 16:32 ` David C. Hoos, Sr.
2002-07-13 20:36   ` Jan Prazak
2002-07-13 18:02     ` David C. Hoos, Sr.
2002-07-13 18:17     ` sk
2002-07-13 20:02       ` Jeffrey Creem
     [not found]     ` <3D306ED5.33E80E09@myob.com>
2002-07-13 18:52       ` David C. Hoos, Sr.
     [not found]       ` <020a01c22a9f$2b50d6c0$6400000a@dhoos>
2002-07-13 19:02         ` sk
2002-07-14 15:02           ` Jan Prazak
2002-07-14 19:25             ` Darren New
2002-07-15 15:22               ` Steffen Huber
2002-07-13 16:44 ` Christopher Browne
2002-07-13 22:09   ` Robert Dewar
2002-07-13 17:17 ` tmoran
2002-07-13 19:44 ` Florian Weimer
  -- strict thread matches above, loose matches on Subject: below --
2002-07-14 20:22 Gautier direct_replies_not_read
2002-07-15 11:36 ` Jan Prazak
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