From @dogbert17

While discussing RT #​129321 TimToady found another problem with duckmap, see

http://irclog.perlgeek.de/perl6/2016-09-26#i_13285724

The problem can be shown with a couple of examples, one with duckmap where
structure is lost

dogbert@​dogbert-VirtualBox ~/repos/rakudo $ ./perl6 -e 'my @​a = [1,
[2,3],4]; dd duckmap(-> Int $x { $x ~~ Int ?? $x !! Any }, @​a)'
(1, (2, 3), 4)

According to TimToady the result should have been

[1, [2, 3], 4]

deepmap, on other hand, does retain structure as can be shown with

dogbert@​dogbert-VirtualBox ~/repos/rakudo $ ./perl6 -e 'my @​a = [1,[2,3],4];
say @​a.deepmap({ $_ + 1 })'
[2 [3 4] 5]

/dogbert17

From ctp@fastmail.co.uk

Pull requests raised for discussion​:

rakudo/rakudo#915
Raku/roast#180

The RT System itself - Status changed from 'new' to 'open'

From @zoffixznet

On Tue, 08 Nov 2016 06​:31​:15 -0800, ctp@​fastmail.co.uk wrote​:

Pull requests raised for discussion​:

rakudo/rakudo#915
Raku/roast#180

Merged. Thanks.

@zoffixznet - Status changed from 'open' to 'resolved'