Dyalog Forums

Thanks for the replies. This was just what I needed to find where I was going wrong. I think I was misspelling the iCloud folder name. I was using ".../com-apple-CloudDocs/..." when I should have been using ".../com~apple~CloudDocs/...". Now I have it working nicely. Thanks again, Mike

I have a file that I'd like to keep in iCloud Drive so that I can access it from APL either on my Mac or on on my laptop. According to Apple's documentation, the first step is to give Dyalog APL (a third party app) permission to access iCloud Drive. You do this on the System Preferences panel going ...

Phil,
Thanks for the offerings. I'll go with the original, even it does look like there's something wrong with the language.

Bob,
I no longer do Facebook in any form, but it's good to know that others are thinking along these lines.

Mike

Is the following behaviour to be expected?

      )clear
clear ws
      input←?15 15⍴9
      +/,input
1111
      {p←⍵ ⋄ {p×+/,⍵}input}2 3 4
2222 3333 4444
      f←{p×+/,⍵}
      {p←⍵ ⋄ f input}2 3 4
VALUE ERROR: Undefined name: p
f[0] f←{p×+/,⍵}
        ∧

I need some help with what I call an extension to inner product. It goes like this. xip is an operator taking a number n of axes as its left argument. It produces a dyadic function which behaves like an inner product, but rather than acting on vectors, it acts on arrays of greater rank n. For ...

For quite a long time I've been puzzled by the relationship between APL and tensor notation. I could see it was close but for the longest time I struggled with the details. I'd heard Ken Iverson speak about tensor notation as if it was nothing very special ... and this was Einstein's choice of ...