Sinclair ZX80 / ZX81 / Z88 Forums

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I don’t have much call for recursion in my job (aside from occasional data validation of complex hierarchical structured data in TSQL) so mostly the DEF FN as shown. I once had a query in a tool and it needed a recursive search to do the job, An expert said it was not possible but I solved it. Prob...

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I consider myself to be a reasonably competent programmer (I spend a fair amount of my professional life doing it) but reading stuff like this still blows my mind. Recursion in general or this BASIC-method with DEF FN? During my study (1987) I coded a recursive mazegenerator in Pascal and got a mes...

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A lot more here....

http://www.users.globalnet.co.uk/~jg27p ... -aowen.txt

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Decimal to binary

Code: Select all

   1 DEF FN b$(d)=VAL$ ((CHR$ 19
3+"d" AND d<=1)+(("FN b$(INT (d/
2))+"+CHR$ 193+STR$ ((d/2)<>INT 
(d/2))) AND d>1))

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I even had a recursive HANOI solution printed in a string.

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Code: Select all

10 Def Fn D$(n,s$)=val$ (("s$+fn D$(n-1,s$)" And N>0)+("""""" And N=0))
20 Print Fn D$(10,"abc")

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No, there is no problem having EAR and MIC connected but you might need to adjust the azimuth.

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I have an idea to improve speed of quaracterdisplay so I hope to bring out 3.01 soon.

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Version 3.00 has quaracterdisplay.

https://www.mediafire.com/file/ieybc12v ... 0.zip/file

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I now have Quaracterdisplay working, but now IX-intrupt is not working....

so no new release yet

Sinclair ZX80 / ZX81 / Z88 Forums

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