I suppose that you know that %hash{...} is a new slice syntax that returns the keys too, and that's your intention.

Regarding your syntax

> %hash{-'schema', -'log'}

Well "-" has a meaning in arrays, so I'd rather prefer something else like "!"

But this would get messy if the list also included non-negated elements,

%hash{'schema', -'log'} # WHAT???

so for the sake of a clean design one would rather do only one negation

%hash{! 'schema', 'log'}

I'm not aware of a built-in syntax to do this, but it's basically syntactic sugar for a grep, see demo in debugger

  DB<1> @hash{'schema','log',a..c}=('s','l',1..3)

  DB<2> x \%hash
0  HASH(0x3168da0)
   'a' => 1
   'b' => 2
   'c' => 3
   'log' => 'l'
   'schema' => 's'
  DB<3>  x +{ %hash{grep !/^schema|log$/, keys %hash } }  # Note °
0  HASH(0x32e09d8)
   'a' => 1
   'b' => 2
   'c' => 3
  DB<4>

[download]

I know you didn't want grep, but this offers many flexibilities, like dynamically deciding what to exclude.

Cheers Rolf
(addicted to the 𐍀𐌴𐍂𐌻 Programming Language :)
Wikisyntax for the Monastery

°) the +{...} is just an anonymous hash for pairwise dump

In reply to Re: Hash/Array slice : how to exclude items? by LanX
in thread Hash/Array slice : how to exclude items? by bliako

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