RTP Series - RTP19 [Revelation On-Line Wiki]

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====== RTP Series - RTP19=====

^Published By^Date^Version^Knowledge Level^Keywords^
|Sprezzatura Ltd|01 JUN 1989|1.13+|EXPERT|RTP19, OCONV, PICK|

OCONV processor. Has following undocumented (and not very useful) features,
left in for PICK compatibility.

    U50BB     Bug (doesn't work)
    U10DD     Returns SERIAL()
    U60E0     Returns @CRTWIDE
    U70E0     Turns echo on
    U80E0     Turns echo off

OCONV permits multiple data values separated by value marks. Thus to OCONV a
dynamic array of dates it is not necessary to process each date in turn,
rather the entire array can be OCONVed i.e.

    @ANS - OCONV(DATE.ARRAY,"D2/E")

Similarly, OCONV allows conversions to be stacked separated by value marks.
Thus the expression

    PRINT OCONV(600000,"MD2": @VM : "D2/E")

would print "04/06/85" as the 600000 would first be MD2ed to 6000 and then
D2/Eed to 04/06/85.

Note that both data values AND conversions can be stacked but if this is
done the stacking is not performed in a one to one manner - rather each data
value is taken and converted through each of the conversions before the next
data value is touched, thus

     VALS = 600000 : @VM : 600100
     @ANS = OCONV(VALS,"MD2" : @VM : "D2/E")

would return @ANS equal to :04/06/85" : @VM : "05/06/85".

Remember that OCONVing can be accomplished by implicit formatting, much in
the same way that data formatting can be explicit or implicit (i.e. PRINT
FMT(A,"L#10") is functionally equivalent to PRINT A "L#10").  Thus PRINT D
"D2/E" is identical to PRINT OCONV(D,"D2/E") except that it is a lot easier
to code!


(Volume 1, Issue 2, Page 8)