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--> and returns have different behavior #5541

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p6rt opened this issue Aug 6, 2016 · 1 comment
Open

--> and returns have different behavior #5541

p6rt opened this issue Aug 6, 2016 · 1 comment

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@p6rt
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p6rt commented Aug 6, 2016

Migrated from rt.perl.org#128861 (status was 'new')

Searchable as RT128861$

@p6rt
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p6rt commented Aug 6, 2016

From @ajs

These two commands (circa rakudo-moar 146e18) have different output​:

$ perl6 -e 'class Foo { method bar(--> Str​:D) {} }; say Foo.^methods.map​:
{"{.name}={.WHAT.perl}, returns {.returns.perl}"}'
(bar=Method, returns Str​:D)
$ perl6 -e 'class Foo { method bar() returns Str​:D {} }; say
Foo.^methods.map​: {"{.name}={.WHAT.perl}, returns {.returns.perl}"}'
(bar=Method+{Callable[Str​:D]}, returns Str​:D)

But it seems as if they should have the same output.

This also came up here​:

rakudo/rakudo#798

Relevant IRC log​:

[11​:12] <smls> m​: my method bar() returns Str {}; say &bar.^name;
[11​:12] <+camelia> rakudo-moar 146e18​: OUTPUT«Method+{Callable[Str]}␤»
[11​:12] <smls> m​: my method bar(--> Str) {}; say &bar.^name;
[11​:12] <+camelia> rakudo-moar 146e18​: OUTPUT«Method␤»
[11​:13] == telex [teletype@​freeshell.de] has quit [Ping timeout​: 258
seconds]
[11​:13] <harmil> Uh... am I misunderstanding what "returns" is for or does
that not make any sense?
[11​:13] <smls> harmil​: Seems weird to me too
[11​:13] <smls> A leaking implementation detail maybe?
[11​:14] <harmil> methinks
[11​:14] <ugexe> there are odd differences between (--> RetType) and returns
RetType that shouldnt exist

--
Aaron Sherman, M.​:
P​: 617-440-4332 Google Talk, Email and Google Plus​: ajs@​ajs.com
Toolsmith, developer, gamer and life-long student.

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