[Info-vax] READ and WRITE vs. SEARCH/OUTPUT

[Jan-Erik Soderholm]

Phillip Helbig---undress to reply wrote 2012-01-21 17:29:
> Imagine a file x.x like
>
> A
> A
> A
> B
> A
> A
> B
> A
> A
> A
> A
> B
>
> Would SEARCH x.x B /OUT=X.LIS be better than
>
> $  OPEN/READ IN X.X
> $  OPEN/WRITE OUT X.LIS
> $LOOP:
> $  READ/END=DONE IN REC
> $  IF REC .EQS. "B" THEN WRITE OUT REC
> $ GOTO LOOP
> $DONE:
> $  CLOSE IN
> $  CLOSE OUT
> $  EXIT
>
> Some tests indicate that SEARCH is much faster.  Can one depend on this
> always being the case?
>

I would expect a single image activation doing the same "job"
as a DCL script to always beeing faster.
I can't think of a case where the DCL would be faster.

The only reason I see  to use DCL would be if the syntax of SEA
can't handle the selection.

Jan-Erik.