more match() problems
Hello again,
Looking closer at the match() function,
i find that it doesnt really work very well
unless you are only using it on one level
sequences (like {1,2,3} or "abc").
Untill this point, i dont think i ever used it
for anything else, but since we were looking at it
anyway i thought i would mention this.
match({2,3},{1,2,3})
returns the number 2, because the 'slice' was found
in the second sequence. Works fine.
Now,
match({{1,2,3}},{{1,2,3}})
returns the number 1, because again the 'slice'
(although this time deeper) was found in
the second sequence. Works fine.
Nowwwwwwwww...
what does
match({{2,3}},{{1,2,3}})
return? (same example with the 1 missing in first arg)
If you said the number 2, you are correct, because
the 'slice' could be found in the second sequence
at the required level, right???
Well, guess again!
The Eu match command returns a big fat zero!
Yes, that's right,
i=match({{1,2,3}},{{1,2,3}}) -- rets 1
but
i=match({{2,3}},{{1,2,3}}) -- rets 0
Care to try to figure that out?
I guess i went too far in assuming there was a method
to the madness.
Anomaly number 97316 and counting...
Take care,
Al
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