McLaughlin, James on Sat, 21 Feb 2004 16:31:00 +0100 |
[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]
RE: peculiar parenthesis problem. |
Thanks. It seems I misunderstood the function of the braces { }. I had thought these were used to enclose long programs but I see I was wrong. 'Best, Jimmy. -----Original Message----- From: Bill Allombert [mailto:allomber@math.u-bordeaux.fr] Sent: Fri 2/20/2004 5:59 PM To: pari-users@list.cr.yp.to Cc: Subject: Re: peculiar parenthesis problem. On Fri, Feb 20, 2004 at 05:36:09PM -0500, McLaughlin, James wrote: > > I have a question concerning the use of { and }. > > If I move the ${$ to the start of the code, which seems the logical > place to put it(see the second piece of code below), I get no output. > > I suspect the problem lies with the way I defined d(n) and subsequently > g(n) and h(n). I want something that lets me evaluate these functions at > different values of n. As it is, just doing g(33) etc works. The only > problem is with the { and }. You have a hit a subtle point of GP grammar, and it took me a while to make gp2c accomodate it. According to GP grammar, a function is terminated by a (unquoted) end-of-line. What happen with your programm is that all end-of-line are quoted, so the function d(n) 'eat' all the text until the end of the files. > Can anyone tell me how to fix this? Never write more than one function inside a {} block. Cheers, Bill.