If I have a list a = [1, 5, 7, 90, 10]; how would I add all the values together to get 115? -- View this message in context: http://forum.openscad.org/How-to-add-all-the-values-in-a-list-together-tp12925.html Sent from the OpenSCAD mailing list archive at Nabble.com.

On 06/22/2015 09:21 PM, cn145912 wrote: > If I have a list > a = [1, 5, 7, 90, 10]; > how would I add all the values together to get 115? > One option (should work even with long lists, if I did not mess up the tail recursion...): function sum(list, idx = 0, result = 0) = idx >= len(list) ? result : sum(list, idx + 1, result + list[idx]); a = [1, 5, 7, 90, 10]; echo(sum(a)); ECHO: 113 ciao, Torsten.

I get 113: a = [1, 5, 7, 90, 10]; function sum(a,i)=(i==0)?a[0]:a[i]+sum(a,i-1); echo(sum(a,4)); echo(1+5+7+90+10); 2015-06-22 21:21 GMT+02:00 cn145912 <neil.penning+openscad@gmail.com>: > If I have a list > a = [1, 5, 7, 90, 10]; > how would I add all the values together to get 115? > > > > -- > View this message in context: > http://forum.openscad.org/How-to-add-all-the-values-in-a-list-together-tp12925.html > Sent from the OpenSCAD mailing list archive at Nabble.com. > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > -- stempeldergeschichte@googlemail.com <karsten@rohrbach.de> P.S. Falls meine E-Mail kürzer ausfällt als Dir angenehm ist: Ich probiere gerade aus kurze Antworten statt gar keine Antworten zu schreiben. Wenn Du gerne mehr lesen möchtest, dann lass es mich bitte wissen. P.S. In case my e-mail is shorter than you enjoy: I am currently trying short replies instead of no replies at all. Please let me know, if you like to read more. Enjoy!

ah. but to get 115 your function needs to add +2 to whatever it finds! ha. Jerry -- Extra Ham Operator: K7AZJ Registered Linux User: 275424 Raspberry Pi and Arduino developer *The most exciting phrase to hear in science - the one that heralds new discoveries - is not "Eureka!" but "That's funny...".*- Isaac. Asimov *I* *f you give someone a program, you will frustrate them for a day; if you teach them how to program, you will frustrate them for a lifetime. *- Anonymous *If writing good code requires very little comments, then writing really excellent code requires no comments at all!*- Ken Thompson On Mon, Jun 22, 2015 at 12:55 PM, Peter Falke < stempeldergeschichte@googlemail.com> wrote: > I get 113: > > a = [1, 5, 7, 90, 10]; > > function sum(a,i)=(i==0)?a[0]:a[i]+sum(a,i-1); > > echo(sum(a,4)); > > echo(1+5+7+90+10); > > 2015-06-22 21:21 GMT+02:00 cn145912 <neil.penning+openscad@gmail.com>: > >> If I have a list >> a = [1, 5, 7, 90, 10]; >> how would I add all the values together to get 115? >> >> >> >> -- >> View this message in context: >> http://forum.openscad.org/How-to-add-all-the-values-in-a-list-together-tp12925.html >> Sent from the OpenSCAD mailing list archive at Nabble.com. >> >> _______________________________________________ >> OpenSCAD mailing list >> Discuss@lists.openscad.org >> http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org >> > > > > -- > stempeldergeschichte@googlemail.com <karsten@rohrbach.de> > > P.S. Falls meine E-Mail kürzer ausfällt als Dir angenehm ist: > Ich probiere gerade aus kurze Antworten statt gar keine Antworten zu > schreiben. > Wenn Du gerne mehr lesen möchtest, dann lass es mich bitte wissen. > > P.S. In case my e-mail is shorter than you enjoy: > I am currently trying short replies instead of no replies at all. > Please let me know, if you like to read more. > > Enjoy! > > _______________________________________________ > OpenSCAD mailing list > Discuss@lists.openscad.org > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org > >