From: "Charles Mills" <[email protected]>
Sent: Thursday, March 15, 2018 2:51 AM


1.       Is there a machine instruction that will find one string within
another? That given "Now is the time" and "is" would find the "is" and
return a pointer to it? A machine instruction analog of Rexx POS?

2.       Searching the PoOp for such an instruction led me to CUSE. It does
not seem that CUSE could be used for this - is that correct? If I am reading
CUSE correctly, then given "Now is the time", "All is well" and 2 or 3 would
return the position of "is". Is my reading correct? What would that be good
for? What would be a reasonable real-world use?

The traditional TRT to search for the first letter,
followed by CLC for the word (for which the search can commence
at the second letter, because the first letter has already been found),
will likely be the quickest.

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