Hello Philip;

It looks like 0{y is 'year',one and 0{yy is 'year',ell

try

   check  =: ({&a.)@>:(a.i.])

on them and see if that makes it more visible.

The font you are using may render one and lower-case l so they appear alike. I could see only a one pixel difference, perhaps even 1/2 a pixel with ClearType.


Philip A. Viton wrote:

Can someone help me understand why this is going wrong here? I've been staring at it for half an hour and can't figure it out. Basically, I need to understand how to discover what the difference is between two variables, denoted y and yy. In the failing application, under debug I see

y n 2$(<5$'year1'),(<4$'year')

I don't think I can get a similar report for the global yy.


Thanks for any suggestions!

------------------- transcript

      z
+--------------+
¦wts¦year¦yearl¦
+--------------+

      y
+----------+
¦year1¦year¦
+----------+

      yy
+----------+
¦yearl¦year¦
+----------+


      z i. yy   NB. this works!
2 1


      z i. y    NB. this doesn't, for the zero'th element
3 1

NB. at this point I'm trying to test whether y and yy are the same

      #each y
+---+
¦5¦4¦
+---+
      #each yy
+---+
¦5¦4¦
+---+


      3!:0 y
32
      3!:0 yy
32

NB.  but J thinks they're different

      y -: yy
0

      y -: each yy
+---+
¦0¦1¦
+---+


------------------------
Philip A. Viton
City Planning, Ohio State University
275 West Woodruff Avenue, Columbus OH 43210
[EMAIL PROTECTED]

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