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September 22, 2000 08:17Subject:

Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slicesMessage ID:

39CB7814.85EE4639@pha.jhu.eduIlya Zakharevich wrote: > But with Fortran such things are not *needed*. Compilers are smart > enough to convert (equivalents to) > > map 3*$_, 34..67 This is true, but easier (and less buggy) to say what you exactly what you mean. 102:201:3 Anyway the idea has been proposed, it won't break Perl, we'll see what happens. >> > f(3*@a) > > would typically be a list context - and suddently instead of 3*(1+$#a) > you get C<map 3*$_, @a>. This is true, what I would propose is we declare 3*(1+$#a) outmoded and always have it mean C<map 3*$_, @a> in all contexts. This of course will break perl5 code. Note mine because I always say 3*scalar(@a) because 3*@a does not look like 3*(1+$#a) to me. I don't know how many people would depend on that feature. There is also the problenm that we are arguing somewhat in a vacuum as we don't know how radical perl6 (in terms of syntax changes) will be. Anyhow the various proposals are out there, we'll see what happens. > Why? Currently you can make them look like references to array. See > Math::Pari for an implementation. Overloading '@{}' gives yet another > way to do this. True but the user has to remember 'owe I am now using a special PDL array which means I have to always use a reference to it rather than treat it like a perl array'. Not good. > > > It's really hard to explain why people should use @x[1..10] for > > perl arrays and $x->slice("1:10") for PDL arrays! > > Use > > $x->[1..10] > > for both. This is true, but inelegant. If perl @x arrays are not considered useful why not get rid of them and always use references? KarlThread Previous | Thread Next

- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes andslices by Buddha Buck
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes andslices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes andslices by Christian Soeller
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes andslices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes andslices by Buddha Buck
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
**Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices**by Karl Glazebrook- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by c.soeller
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Karl Glazebrook
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Jeremy Howard
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Christian Soeller
- Re: RFC 231 (v1) Data: Multi-dimensional arrays/hashes and slices by Ilya Zakharevich

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