Re: Lambda recursions on the example of generating permutations

[Dr . Jürgen Sauermann]

    Hi Robin,
    
    yes it is. Fixed in SVN 1675.
    
    Windows files are rarely updated, for an up-to-date windows version:
    
    install cygwin,
    check out from SVN, then
    ./configure ; make ; sudo make install
    
    like in GNU/Linux.
    
    Best Regards,
    Jürgen

On 4/4/23 14:20, Robin Haberkorn wrote:

> Perm
>       ← {(X/⍨⍺=+/¨X←(⊂2⍴⍨⍵)⊤¨⍳2*⍵) /¨ ⊂⍳⍵; X}
>       
>       
>       Works on v1.8-1 (the Debian package), but NOT v1.8 for Windows
>       (apl-1.8-windows.zip). Also it does not work on the SVN trunk!
>       
>       
>       This version however works on the aforementioned versions:
>       
>       
>       Perm ← {(X/⍨⍺=+/¨X←(⊂2⍴⍨⍵)⊤¨⍳2*⍵) {⍺/⍵}¨ ⊂⍳⍵; X}
>       
>       
>       Which is clearly a bug.
>       
>       
>