NQP list initializers

[bsdz]

When a list is declared in NQP with only one element a scalar is created.

i.e, the following nqp script: -

load_bytecode('library/dumper.pbc');

my @my_list := (10);
_dumper(@my_list, 'my_list');

displays: -

"my_list" => 10

when it should show: -

"my_list" => ResizablePMCArray (size:1) [
    10
]

A workaround is to place a dummy element and shift it. i.e.

my @my_list := ('dummy', 10);
@my_list.shift();
_dumper(@my_list, 'my_list');

[jkeenan]

Patrick,

Can you comment on the issues raised in this ticket?

Thank you very much.
kid51

[pmichaud]

Short answer: Parens are not used to create lists or arrays in NQP (or Perl 6) -- that's the role of the comma.

In nqp-rx (the new version of NQP), one can force array creation by using square brackets, as in

my @list := [10];

Closing ticket,

Pm