Re: Typing allergy

[ajx jxz@xxxxxxxx]

Carl Distefano wrote:

> Reply to note from ajx  Mon, 05 Jan 2004 08:51:12
> +0100
>
> > 2. Somewhere along the line I came across an advice from
> > XyQuest to use any variable from 0 - 9 (not 00 - 09).
>
> That's nonsense, even if XyQuest did say so.

I meant: for the purpose of copying defined text to the cmd
line, use any variable from 0 - 9.

> .. First of all, 00 HAS
> to be used to pass arguments; there's no alternative. Equally, the
> "transient" S/Gs 01-99 (not 09) are, almost by definition, common
> property because they're the only ones that vanish without a trace
> when the program is done. It's insane not to use S/Gs in this range
> when the purpose doesn't require a global (memory-resident) value;
> "ordinary" (0-9|A-Z) and "permanent" (100-1999) burden memory, and
> ultimately degrade performance, unless laboriously zeroed out upon
> EXit. Memory-resident S/Gs should only be used for persistent
> values required by different programs (or by a single program at
> different times).
>
> There is a statement in XY4.DLG to the effect that 00-99 are
> "reserved" for use by the menus; it's misleading. The implication
> is that variables set by user programs might clash with menu
> variables, but that's a consideration only if a user program calls a
> menu (DiaLoG) routine, and even then only to the extent of any
> overlapping S/Gs. If your program calls a DiaLoG routine that uses,
> say, S/Gs 01-04, start your program at 05; alternatively, you can
> use U2 routines HIDE and UNHIDE to prevent values from being changed
> by the called process. Clashes of this kind are not a reason to
> resort to memory-resident S/Gs.

Using 3.55, the only time I have memory problems is when I
copy or move upwards of 20k between files. 

> > but I don't run selected code very often ..
>
> Meaning...? If you only hammer nails once in a while, the back end
> of screw driver will do -- but a hammer still does it better.

What I run here is almost more filenames than code. This
way of loading a couple of files was just an easy way of
adding extra function to an existing setup with minimal
disturbance.
John

> --
> Carl Distefano
> cld@xxxxxxxx

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