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.list,.List, (Real,) inconsistencies #5647

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p6rt opened this issue Sep 7, 2016 · 2 comments
Open

.list,.List, (Real,) inconsistencies #5647

p6rt opened this issue Sep 7, 2016 · 2 comments
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@p6rt
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p6rt commented Sep 7, 2016

Migrated from rt.perl.org#129220 (status was 'new')

Searchable as RT129220$

@p6rt
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p6rt commented Sep 7, 2016

From @LLFourn

say (Real,) ~~ Real.list; # False
say (Real,) ~~ Real.List; # False
say Real.list ~~ (Real,); # True
say Real.list ~~ Real.List; # True
say Real.List ~~ (Real,); # True
say Real.List ~~ Real.list; # True

say (Cool,) ~~ Cool.list; # True
say (Cool,) ~~ Cool.List; # True
say Cool.list ~~ (Cool,); # True
say Cool.list ~~ Cool.List; # True
say Cool.List ~~ (Cool,); # True
say Cool.List ~~ Cool.list; # True

(Real,) seems to be a special snowflake and that's not Cool.

@p6rt
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p6rt commented Sep 7, 2016

From @LLFourn

I Realised what's happening. Real is a role so calling .list on it puns it.

so the phenomenon can be boiled down to​:

Real ~~ Real.^pun # False

I'm not sure if it should be that way. I will accept notabug though :)

On Thu, Sep 8, 2016 at 12​:33 AM Lloyd Fournier <perl6-bugs-followup@​perl.org>
wrote​:

# New Ticket Created by Lloyd Fournier
# Please include the string​: [perl #​129220]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl6/Ticket/Display.html?id=129220 >

say (Real,) ~~ Real.list; # False
say (Real,) ~~ Real.List; # False
say Real.list ~~ (Real,); # True
say Real.list ~~ Real.List; # True
say Real.List ~~ (Real,); # True
say Real.List ~~ Real.list; # True

say (Cool,) ~~ Cool.list; # True
say (Cool,) ~~ Cool.List; # True
say Cool.list ~~ (Cool,); # True
say Cool.list ~~ Cool.List; # True
say Cool.List ~~ (Cool,); # True
say Cool.List ~~ Cool.list; # True

(Real,) seems to be a special snowflake and that's not Cool.

@p6rt p6rt added the Bug label Jan 5, 2020
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