I'm a big advocate of clean functions, and I just want to point out that
this is really nicely done: clear, compact, efficient, documented, and the
function name itself perfectly describes what it does.
Really nice!
On Wed, Dec 19, 2012 at 4:33 PM, Peter M. Brigham <pmb...@gmail.com> wrote:
> function offsets str,container,includeOverlaps
> -- returns a comma-delimited list of all the offsets of str in container
> -- third param is optional:
> -- offsets("xx","xxxxxx") returns "1,3,5" not "1,2,3,4,5"
> -- ie, by default, overlapping offsets are not counted
> -- if you want overlapping offsets then pass "true" in 3rd param
> -- returns 0 if str is not in container
> if str is not in container then return 0
> if includeOverlaps = empty then put false into includeOverlaps
> put empty into offsetList
> put 0 into startPoint
> repeat
> put offset(str,container,startPoint) into thisOffset
> if thisOffset = 0 then exit repeat
> add thisOffset to startPoint
> put startPoint & comma after offsetList
> if not includeOverlaps then
> add length(str)-1 to startPoint
> end if
> end repeat
> return item 1 to -1 of offsetList -- delete trailing comma
> end offsets
>
>
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