Re: [Csnd] Problems With If-Then Statements: Switch

Re: [Csnd] Problems With If-Then Statements: Switch

Date	2012-10-12 18:09
From	john ffitch
Subject	Re: [Csnd] Problems With If-Then Statements: Switch
	Do people really want this? Not two hard (with new parser) >>>>> "David" == David Mooney writes: David> This doesn't really address your problem, but when using multiple David> conditionals as you show I've often thought it would be handy if David> Csound had a switch structure, as in C++. Given the variable kval (or David> ival), and possible numerical values 1-n for kval, a switch looks like David> this: David> switch(kval) { David> case 1: David> David> case 2: David> David> case 3: David> David> . David> . David> . David> case n: David> David> break David> } David> All of the codes could be kgoto."break" at the end stops David> the switch, which is generally used inside of a while loop. In C++, David> this is done using a blank case (case ' ') or a newline escape David> sequence (case '\n'). David> Just a thought. ==John ffitch

Date	2012-10-12 18:53
From	Victor Lazzarini
Subject	Re: [Csnd] Problems With If-Then Statements: Switch
	Sounds like syntactic sugar to me. Fairly inoffensive, I'd say. On 12 Oct 2012, at 18:09, john ffitch wrote: > Do people really want this? Not two hard (with new parser) >>>>>> "David" == David Mooney writes: > > David> This doesn't really address your problem, but when using multiple > David> conditionals as you show I've often thought it would be handy if > David> Csound had a switch structure, as in C++. Given the variable kval (or > David> ival), and possible numerical values 1-n for kval, a switch looks like > David> this: > > David> switch(kval) { > David> case 1: > David> > David> case 2: > David> > David> case 3: > David> > David> . > David> . > David> . > David> case n: > David> > David> break > David> } > > David> All of the codes could be kgoto."break" at the end stops > David> the switch, which is generally used inside of a while loop. In C++, > David> this is done using a blank case (case ' ') or a newline escape > David> sequence (case '\n'). > > David> Just a thought. > > ==John ffitch > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" > Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie

Date	2012-10-12 18:58
From	Steven Yi
Subject	Re: [Csnd] Problems With If-Then Statements: Switch
	Should we allow {} in new parser then too in place of then/endif ? or only allow {} with switch? Seems like we need to design this to be consistent to be with until and if-then-else. On Fri, Oct 12, 2012 at 6:53 PM, Victor Lazzarini wrote: > Sounds like syntactic sugar to me. Fairly inoffensive, I'd say. > On 12 Oct 2012, at 18:09, john ffitch wrote: > >> Do people really want this? Not two hard (with new parser) >>>>>>> "David" == David Mooney writes: >> >> David> This doesn't really address your problem, but when using multiple >> David> conditionals as you show I've often thought it would be handy if >> David> Csound had a switch structure, as in C++. Given the variable kval (or >> David> ival), and possible numerical values 1-n for kval, a switch looks like >> David> this: >> >> David> switch(kval) { >> David> case 1: >> David> >> David> case 2: >> David> >> David> case 3: >> David> >> David> . >> David> . >> David> . >> David> case n: >> David> >> David> break >> David> } >> >> David> All of the codes could be kgoto."break" at the end stops >> David> the switch, which is generally used inside of a while loop. In C++, >> David> this is done using a blank case (case ' ') or a newline escape >> David> sequence (case '\n'). >> >> David> Just a thought. >> >> ==John ffitch >> >> >> Send bugs reports to the Sourceforge bug tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >> > > Dr Victor Lazzarini > Senior Lecturer > Dept. of Music > NUI Maynooth Ireland > tel.: +353 1 708 3545 > Victor dot Lazzarini AT nuim dot ie > > > > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >

Date	2012-10-12 19:19
From	Rory Walsh
Subject	Re: [Csnd] Problems With If-Then Statements: Switch
	Yes please! if(this==works){ ....why not? } On 12 October 2012 18:58, Steven Yi wrote: > Should we allow {} in new parser then too in place of then/endif ? or > only allow {} with switch? Seems like we need to design this to be > consistent to be with until and if-then-else. > > On Fri, Oct 12, 2012 at 6:53 PM, Victor Lazzarini > wrote: >> Sounds like syntactic sugar to me. Fairly inoffensive, I'd say. >> On 12 Oct 2012, at 18:09, john ffitch wrote: >> >>> Do people really want this? Not two hard (with new parser) >>>>>>>> "David" == David Mooney writes: >>> >>> David> This doesn't really address your problem, but when using multiple >>> David> conditionals as you show I've often thought it would be handy if >>> David> Csound had a switch structure, as in C++. Given the variable kval (or >>> David> ival), and possible numerical values 1-n for kval, a switch looks like >>> David> this: >>> >>> David> switch(kval) { >>> David> case 1: >>> David> >>> David> case 2: >>> David> >>> David> case 3: >>> David> >>> David> . >>> David> . >>> David> . >>> David> case n: >>> David> >>> David> break >>> David> } >>> >>> David> All of the codes could be kgoto."break" at the end stops >>> David> the switch, which is generally used inside of a while loop. In C++, >>> David> this is done using a blank case (case ' ') or a newline escape >>> David> sequence (case '\n'). >>> >>> David> Just a thought. >>> >>> ==John ffitch >>> >>> >>> Send bugs reports to the Sourceforge bug tracker >>> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >>> Discussions of bugs and features can be posted here >>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >>> >> >> Dr Victor Lazzarini >> Senior Lecturer >> Dept. of Music >> NUI Maynooth Ireland >> tel.: +353 1 708 3545 >> Victor dot Lazzarini AT nuim dot ie >> >> >> >> >> >> Send bugs reports to the Sourceforge bug tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >> > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound" >

Date	2012-10-15 21:47
From	Louis Cohen
Subject	Re: [Csnd] Problems With If-Then Statements: Switch
	Or how about the more general: switch{ case case case case break} ... -Lou On Oct 12, 2012, at 1:09 PM, john ffitch wrote: > Do people really want this? Not two hard (with new parser) >>>>>> "David" == David Mooney writes: > > David> This doesn't really address your problem, but when using > multiple > David> conditionals as you show I've often thought it would be handy > if > David> Csound had a switch structure, as in C++. Given the variable > kval (or > David> ival), and possible numerical values 1-n for kval, a switch > looks like > David> this: > > David> switch(kval) { > David> case 1: > David> > David> case 2: > David> > David> case 3: > David> > David> . > David> . > David> . > David> case n: > David> > David> break > David> } > > David> All of the codes could be kgoto."break" at the end > stops > David> the switch, which is generally used inside of a while loop. > In C++, > David> this is done using a blank case (case ' ') or a newline escape > David> sequence (case '\n'). > > David> Just a thought. > > ==John ffitch > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body > "unsubscribe csound" >

Date	2012-10-15 21:55
From	Justin Smith
Subject	Re: [Csnd] Problems With If-Then Statements: Switch
	break is either not needed at all, or needed after every case that should not fallthrough. break after the last case will never do anything, since there is nowhere for that case to fallthrough to. On Mon, Oct 15, 2012 at 1:47 PM, Louis Cohen wrote: > Or how about the more general: > > switch{ > case > > case > > case > > case > > break} > ... > > -Lou > > > > On Oct 12, 2012, at 1:09 PM, john ffitch wrote: > >> Do people really want this? Not two hard (with new parser) >>>>>>> >>>>>>> "David" == David Mooney writes: >> >> >> David> This doesn't really address your problem, but when using multiple >> David> conditionals as you show I've often thought it would be handy if >> David> Csound had a switch structure, as in C++. Given the variable kval >> (or >> David> ival), and possible numerical values 1-n for kval, a switch looks >> like >> David> this: >> >> David> switch(kval) { >> David> case 1: >> David> >> David> case 2: >> David> >> David> case 3: >> David> >> David> . >> David> . >> David> . >> David> case n: >> David> >> David> break >> David> } >> >> David> All of the codes could be kgoto."break" at the end stops >> David> the switch, which is generally used inside of a while loop. In C++, >> David> this is done using a blank case (case ' ') or a newline escape >> David> sequence (case '\n'). >> >> David> Just a thought. >> >> ==John ffitch >> >> >> Send bugs reports to the Sourceforge bug tracker >> https://sourceforge.net/tracker/?group_id=81968&atid=564599 >> Discussions of bugs and features can be posted here >> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe >> csound" >> > > > > Send bugs reports to the Sourceforge bug tracker > https://sourceforge.net/tracker/?group_id=81968&atid=564599 > Discussions of bugs and features can be posted here > To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe > csound" >