1. More Wishlist Things
G'day all
While we're talking about wishlist items, I'd like to see some
support for a shorthand notation in Euphoria, something like the
#define used by C/C++. It would be nice if something like the
following:
<longhand>
for i = 1 to length(mainseq)
mainseq[i][21] = mainseq[i][5] + mainseq[i][15]
mainseq[i][22] = mainseq[i][8] - mainseq[i][9]
mainseq[i][23] = (mainseq[i][12] / mainseq[i][13]) + mainseq[i][5]
<lots more of the same>
if i != 1
mainseq[i][54] = mainseq[i-1][7] + 2
else
mainseq[i][54] = 0
end if
end for
</longhand>
could be cut down to something like:
<shorthand>
for i = 1 to length(mainseq)
with mainseq[i]
[21] = [5] + [15]
[22] = [8] - [9]
[23] = ([12] / [13]) + [5]
< lots more of the same>
if i != 1
[54] = mainseq[i-1][7] + 2
else
[54] = 0
end if
end with
end for
</shorthand>
I know this could be done with a preprocessor, and I also know
that the "with..end with" syntax has been linked with namespaces,
but it still would be a nice thing to have, whatever the syntax.
Regards
Tony
2. Re: More Wishlist Things
On Monday 25 June 2001 00:50, Tony Bucholtz wrote:
> G'day all
>
> While we're talking about wishlist items, I'd like to see some
> support for a shorthand notation in Euphoria,....
> <shorthand>
> for i = 1 to length(mainseq)
> with mainseq[i]
> [21] = [5] + [15]
> [22] = [8] - [9]
> [23] = ([12] / [13]) + [5]
> < lots more of the same>
>
> I know this could be done with a preprocessor, and I also know
> that the "with..end with" syntax has been linked with namespaces,
> but it still would be a nice thing to have, whatever the syntax.
>
> Regards
> Tony
Actually, there's no reason I can see that the same syntax couldn't
be used for both. (namespacing and 'structures').
While your shorthand above would be a big improvement, I would really
like to see it implemented fully: e.g:
with customer [ i ] do
NAME = "Joe Blow" -- not [NAME], just NAME
ADDR = "1234 Fifth St."
with TXN [ 4 ] do
ITEM = "Dog food"
AMT = 2.99
end with
end with
Which would be a welcome relief from the abominable:
customer[i][NAME] = "Joe Blow"
customer[i][ADDR] = "1234 Fifth St."
customer[i][TXN][4][ITEM] = "Dog food"
customer[i][TXN][4][AMT] = 2.99
When you have a bunch of nested fields, this kind of thing gets
error prone, and not only your code, but Euphoria as well, looks bad.
Regards,
Irv
