Talk:Multiplication tables

Perl 6 Multiplication Table Output glitch

(Copied from Tims talk page)

You might want to check this output. The axis '+' is off. --Paddy3118 03:50, 27 August 2010 (UTC)

Hi Tim, i see you've made an edit, but the problem persists. I'll go into it a little more:

I see the following:

<lang> x┃ 1 2 3 4 5 6 7 8 9 10 11 12

━━━╋━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  1┃   1   2   3   4   5   6   7   8   9  10  11  12</lang>

When I think it should be:

<lang> x┃ 1 2 3 4 5 6 7 8 9 10 11 12

━━╋━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
  1┃   1   2   3   4   5   6   7   8   9  10  11  12</lang> 

I think you may have a field width off by one or two too many? --Paddy3118 04:06, 27 August 2010 (UTC)

Hi again, I see you made another edit. I checked the Python entry which uses Unicode characters for the table but shows the output under the lang tag. I temporarily edited the Perl 6 output to show what happens when the output uses lang python, and it still looked 'off'. All I can suggest is to look at the output of the Python or other examples that seem to have the output you are after and compare the outputs character-by-character to find out what is happening. --Paddy3118 05:55, 27 August 2010 (UTC)

I don't think my output is off. It works fine in my browser, and in my constant width terminal screens from which pasted the output. $width is 3, and that's how many ━ characters it is supposed to be putting out, and that's how many it is putting out before the ╋. I wonder if your font widths are off somehow in your browser. --Larry

Hi again. What I have found is that on both IE8 and Mozilla 3.6.8 on Windows XP I find the dash that you use to be much longer than the space or any other character as they are supposed to be displayed in a mono-spaced font, and indeed, the body of the table is correctly and equally mono-spaced. The dash you use shows up as too long. The non-ASCII dash used in the Python example is of the correct and equal size??? I'll copy this to the appropriate talk page for other input. --Paddy3118 18:39, 27 August 2010 (UTC)

Anyone else see a problem with the dashes on the Perl-6 entry? --Paddy3118 18:44, 27 August 2010 (UTC)

I do not have a working copy of perl 6, so I can not test this change, but I would suggest:

<lang perl6> my $max = 12; my $width = chars $max**2; my $f = "%{$width}s";

say 'x'.fmt($f), '│ ', (1..$max).fmt($f); say '─' x $width, '┼', '─' x $max*$width + $max; for 1..$max -> $i {

   say $i.fmt($f), '│ ', (
       for 1..$max -> $j {
           $i <= $j ?? $i*$j !! ;
       }
   ).fmt($f);

}</lang>