Harry, You could run the executable (created with DrRacket from the first code snippet) directly from a Windows Shell command line, and the error will be shown in-line in the command window as expected.
But, as you state, clicking on the new executable's icon in an Explorer window does show a command window briefly, but the command window disappears before it can be read. The solution here is to create and use a new Windows Shortcut with a "target" (specified on the "shortcut" tab in the Shortcut's "Properties" window) that runs the executable using the Windows command interpreter (CMD.exe) with the /K option. i.e. Use a Windows Shortcut that explicitly starts a shell that runs the executable, and keeps the shell open after the executable ends, e.g.: The new Shortcut's "target" would be set to something like: C:\WINDOWS\System32\CMD.exe /K "C:\tmp\file-1.exe" Note that with /K, the new (sub-)shell must be terminated explicitly, e.g. by invoking the EXIT command, or by closing the window that displays the shell. Cheers, Kieron. On Fri, Nov 16, 2012 at 2:51 PM, Harry Spier <vasishtha.sp...@gmail.com>wrote: > 1) > Is there some way to keep the console window open when a racket executable > reports an error? (I'm a Windows user) > > For this example, the racket console window closes before I can read the > contract violation message: > #lang racket > (provide/contract [amount positive?]) > (define amount 0) > > This also doesn't stay open for me to read the error message as the > contract violation is only displayed after I enter a character to continue. > #lang racket > (provide/contract [amount positive?]) > (define amount 0) > (system "PAUSE") > > 2) > The reason I was doing this little test was that I thought from the > Racket Guide documentation sections 7.1 and 7.1.1 which used this example, > that provide/contract only did a contract check when the module was > required, and I was checking this both in DrRacket and as an executable. > > Thanks, > Harry Spier > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users > >
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