1. Problem with printf
Printf works fine in my app, with sequence slice to limit the number of
characters actually printed:
printf(1,"%8s",data_array[rec_no][1..6]) for example.
For reasons other than coding elegance, I need to have the arguments of
printf read from another array. It works fine for everything except the
slice specification. The interpreter will not accept 1..6 read into the
final [ ] via a subscripted array element.
As of now, I am using "if" statements to select between several
different printf's with different sequence slice specs. Is there a
better way?
Allen
2. Re: Problem with printf
Allen Robnett wrote:
> Printf works fine in my app, with sequence slice to limit the number of
> characters actually printed:
>
> printf(1,"%8s",data_array[rec_no][1..6]) for example.
You say it works fine, but I don't believe you.
Please add braces:
printf(1,"%8s",{data_array[rec_no][1..6]})
I know it looks strange, but in Euphoria
it logically has to work this way. You have one %,
so you should supply a sequence of
length 1 (at the top-level), not 6, as the third argument.
Otherwise only the first character of 6 will be printed.
Everyone (including myself) falls into this trap
sooner or later.
Regards,
Rob Craig
Rapid Deployment Software
http://www.RapidEuphoria.com
3. Re: Problem with printf
Allen Robnett wrote:
>
>
>Printf works fine in my app, with sequence slice to limit the number of
>characters actually printed:
>
>printf(1,"%8s",data_array[rec_no][1..6]) for example.
>
>For reasons other than coding elegance, I need to have the arguments of
>printf read from another array. It works fine for everything except the
>slice specification. The interpreter will not accept 1..6 read into the
>final [ ] via a subscripted array element.
>
>
Do you want something like this:
atom x,y
x=1
y=6
printf(1,"%8s",data_array[rec_no][x..y]
or
x = {1,6}
printf(1,"%8s",data_array[rec_no][x[1]..x[2]]
Either should work.
4. Re: Problem with printf
----- Original Message -----
From: "C. K. Lester" <euphoric at cklester.com>
To: <EUforum at topica.com>
Subject: Re: Problem with printf
>
>
> Allen Robnett wrote:
>
> >
> >Printf works fine in my app, with sequence slice to limit the number of
> >characters actually printed:
> >
> >printf(1,"%8s",data_array[rec_no][1..6]) for example.
> >
> >For reasons other than coding elegance, I need to have the arguments of
> >printf read from another array. It works fine for everything except the
> >slice specification. The interpreter will not accept 1..6 read into the
> >final [ ] via a subscripted array element.
> >
> >
> Do you want something like this:
>
> atom x,y
> x=1
> y=6
> printf(1,"%8s",data_array[rec_no][x..y]
>
> or
>
> x = {1,6}
> printf(1,"%8s",data_array[rec_no][x[1]..x[2]]
>
> Either should work.
Or if the first element is always #1, then this is suffcient...
integer len
len=6 -- or whatever...
printf(1,"%8s",{data_array[rec_no][1..len]})
--
Derek
5. Re: Problem with printf
On Wed, 31 Dec 2003 03:17:26 +0000, Allen Robnett
<alrobnett at alumni.princeton.edu> wrote:
>The interpreter will not accept 1..6 read into the
>final [ ] via a subscripted array element.
Can you post the code and error message please
Pete
