As you may recall, strings are immutable and the generator find() is working
on the string that it was passed, not some new string that has been assigned
to that same variable later on. In an "every", find() is not called again,
so astring is not being re-evaluated each time through the loop -- the
call-in-progress is resumed where it left off.
Clint
On Wed, Jul 21, 2010 at 1:40 PM, Steve Graham <[email protected]
> wrote:
> procedure test()
> astring := "honolulu"
> write("astring=",astring)
> every fnd := find("lu",astring) do {
> write("fnd=",fnd)
> astring[fnd:fnd+2] := ""
> write("astring=",astring)
> write()
> astring := astring
> }
> write("End: astring=",astring)
> end
>
> Invoking this from main() gives the following output:
>
> astring=honolulu
> fnd=5
> astring=honolu
>
> fnd=7
> astring=honolu
>
> End: astring=honolu
>
> I would have thought that it would have given a value of fnd=5 twice. What
> am I missing?
>
>
> Steve
>
>
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