4fd0b91c-25fb-4682-8bfc-d986492c26cf [openid.stackexchange.com]

• Website: openid.stackexchange.com/user/4fd0b91c-25fb-4682-8bfc-d986492c26cf

Recent Actions

• Commented on PDL features I'd like to see in Perl 6
  If you happen to assign to such a slice, you can overwrite the values. That's not exactly true: @data = ('a' .. 'l'); @slice = @data[2, 3, 5, 7, 11]; print "@slice\n"; $_++ for @slice; print "@slice\n@data <-- no change!\n";...
• Commented on Problems logging in to blogs.perl.org?
  See also GitHub issue #291. Moreover, it seems we can't use our Google accounts to sign in anymore, either....
• Commented on Some Perl modules cross-referenced by Purpose
  The link to nestoria is broken....
• Commented on CPAN Testers from Github?
  Similar to http://travis-ci.org, but providing more than one OS? Sounds like a great idea....

Comment Threads

• David Mertens commented on PDL features I'd like to see in Perl 6

  @Salvador, I have written quite a bit of autolooping code for PDL using PDL::PP. While I agree that it might be nice for the compiler to automatically figure things out, I have seen many circumstances in which the autolooping behavior is ambiguous, and I needed some way to specify how to autoloop.

  As for the unnamed person talking about assigning to slices, you identify exactly what I want in Perl 6, but not what I meant we have in Perl 5. I was talking about using the slice itself as an lvalue, i.e.

  @data = ('a' .. 'l');
  # Assigning directly to the slice overwrites:
  @data…

• 6ae7ba33-d12b-49cf-89f9-34434fe68707 [openid.stackexchange.com] commented on PDL features I'd like to see in Perl 6

  smls here. (Using stackexchange OpenID since logging in normally is borked right now for me.)

  Type checks against array dimensions/sizes

  This seems to be firmly planned, but not yet implemented:

  ➜ perl6 -e 'sub foo (@a($x, $y)) { ... };'
  ===SORRY!=== Error while compiling -e
  Shape declaration with () is reserved
  ...
  

  Aliasing slices

  The following already works in Perl 6 right now (with Rakudo on MoarVM):

  
  my int @a = 2, 4, 6, 8; # create a compact native array
  my @b := @a[1, 3];      # take a slice, and bind …

• Aristotle commented on PDL features I'd like to see in Perl 6

  I think the new refaliasing feature (experimental in 5.22) will allow you to alias slices like so:

  \( @slice[ 0 .. 4 ] ) = \( @data[ 2, 3, 5, 7, 11 ] );

  Obviously it’s ugly to have to count out the LHS slice by hand:

  \( @slice[ 0 .. $#$_ ] ) = \( @data[ @$_ ] )
      for [2, 3, 5, 7, 11];

  That’s quite a mouthful, but at least you can package it up in a function:

  sub alias_slice {
      my ( $src, @dst ) = shift;
      \( @dst[ 0 .. $#_ ] ) = \( @$src[ @_ ] );
      \@dst;
  }
  
  \my @slice = al…
  

• therflabs commented on PDL features I'd like to see in Perl 6

  Call me crazy, but I had a freelance gig converting Python numpy/scipy to Perl PDL... And barely knowing Python it was a lot easier to understand than PDL.

  I can see why numpy/scipy has gained a lot of traction.

  I'd like to see P6 PDL to be like numpy/scipy to ease crossover to Perl 6 and lower the entry level for beginners. In my opinion usability and clear documentation for the non-math scholar has hurt what PDL could have been and could be a lesson for PDL Perl 6.

• lajandy commented on Problems logging in to blogs.perl.org?

  Test comment? If you can see this, the login link above worked for me!