Re: [Bug-apl] Performance problem with simple program

[Peter Teeson]

Of course this was in the context of Jay’s comment on Elias’ APL.

So in that specific case Jay suggested:

(⍳N)⍪[1.5]+\+⌿10 10 10⊤⍳N←400

and then modified it, suggesting ((1+⌊10⍟N)⍴10) to become

(⍳N)⍪[1.5]+\+⌿((1+⌊10⍟N)⍴10)⊤⍳N←400

But this produces the same result:

(⍳N)⍪[1.5]+\+⌿((⌈10⍟N)⍴10)⊤⍳N←400

with 2 less symbols in this case… 

(Meh… APL one liners…..) ;}

On Oct 7, 2015, at 10:30 AM, Juergen Sauermann <address@hidden> wrote:

Hi Peter,

I guess when L⍟(|R)+R=0 is integer then ⌈ and ⌊ would be the same
and then the  1+⌊ is different from ⌈.

/// Jürgen

On 10/07/2015 04:19 PM, Peter Teeson wrote:

Re: encode

((1+⌊10⍟N)⍴10)⊤...

I was wondering why the APL Lang Ref Manual p.161 shows:
⌊1+L⍟(|R)+R=0

Why would this not be just as correct?
⌈L⍟(|R)+R=0

and so 

((⌈10⍟N)⍴10)⊤...

two symbols less……..<grin>