* [ruby-core:95951] [Ruby master Bug#16371] Inconsistent usage of Double splat operator
[not found] <redmine.issue-16371.20191126065007@ruby-lang.org>
@ 2019-11-26 6:50 ` dmytro.vasin
2019-11-26 7:32 ` [ruby-core:95952] " mame
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: dmytro.vasin @ 2019-11-26 6:50 UTC (permalink / raw
To: ruby-core
Issue #16371 has been reported by dmytro.vasin (Dmytro Vasin).
----------------------------------------
Bug #16371: Inconsistent usage of Double splat operator
https://bugs.ruby-lang.org/issues/16371
* Author: dmytro.vasin (Dmytro Vasin)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: 2.6.0
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
Here is an issue with wierd behavior of a ruby double splat operator:
```
a = {a: 'a'}
b = {'b' => 'b'}
{x: 'x', **a}
#=> {:x=>"x", :a=>"a"}
{x: 'x', **b}
#=> TypeError (hash key "b" is not a Symbol)
```
But when I do that implicitly it works:
```
{x: 'x', **{'b' => 'b'}}
#=> {:x=>"x", "b"=>"b"}
```
In the same time:
```
{**{'b' => 'b'}}
# TypeError (hash key "b" is not a Symbol)
```
From my point of view, it definitely works inconsistently
Could you help with that example or give advice? ( maybe I incorrectly use it? )
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:95952] [Ruby master Bug#16371] Inconsistent usage of Double splat operator
[not found] <redmine.issue-16371.20191126065007@ruby-lang.org>
2019-11-26 6:50 ` [ruby-core:95951] [Ruby master Bug#16371] Inconsistent usage of Double splat operator dmytro.vasin
@ 2019-11-26 7:32 ` mame
2019-11-27 1:35 ` [ruby-core:95970] " matz
2019-11-27 3:06 ` [ruby-core:95972] " mame
3 siblings, 0 replies; 4+ messages in thread
From: mame @ 2019-11-26 7:32 UTC (permalink / raw
To: ruby-core
Issue #16371 has been updated by mame (Yusuke Endoh).
`**` operator is for keyword arguments, and in Ruby 2.6, non-symbol key is not allowed in keyword arguments. So in principle, `{x: 'x', **{'b' => 'b'}}` should raise an exception.
Because of the spec change of keyword arguments (#14183), non-symbol key is allowed in Ruby 2.7, and all shown cases work without exception.
Do you want the case to raise an exception in Ruby 2.6?
----------------------------------------
Bug #16371: Inconsistent usage of Double splat operator
https://bugs.ruby-lang.org/issues/16371#change-82787
* Author: dmytro.vasin (Dmytro Vasin)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: 2.6.0
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
Here is an issue with wierd behavior of a ruby double splat operator:
```
a = {a: 'a'}
b = {'b' => 'b'}
{x: 'x', **a}
#=> {:x=>"x", :a=>"a"}
{x: 'x', **b}
#=> TypeError (hash key "b" is not a Symbol)
```
But when I do that implicitly it works:
```
{x: 'x', **{'b' => 'b'}}
#=> {:x=>"x", "b"=>"b"}
```
In the same time:
```
{**{'b' => 'b'}}
# TypeError (hash key "b" is not a Symbol)
```
From my point of view, it definitely works inconsistently
Could you help with that example or give advice? ( maybe I incorrectly use it? )
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:95970] [Ruby master Bug#16371] Inconsistent usage of Double splat operator
[not found] <redmine.issue-16371.20191126065007@ruby-lang.org>
2019-11-26 6:50 ` [ruby-core:95951] [Ruby master Bug#16371] Inconsistent usage of Double splat operator dmytro.vasin
2019-11-26 7:32 ` [ruby-core:95952] " mame
@ 2019-11-27 1:35 ` matz
2019-11-27 3:06 ` [ruby-core:95972] " mame
3 siblings, 0 replies; 4+ messages in thread
From: matz @ 2019-11-27 1:35 UTC (permalink / raw
To: ruby-core
Issue #16371 has been updated by matz (Yukihiro Matsumoto).
I think this inconsistency is a bug. Double splat in hash expressions needs to work as interpolation.
Matz.
----------------------------------------
Bug #16371: Inconsistent usage of Double splat operator
https://bugs.ruby-lang.org/issues/16371#change-82805
* Author: dmytro.vasin (Dmytro Vasin)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: 2.6.0
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
Here is an issue with a weird behavior of ruby double splat operator:
```
a = {a: 'a'}
b = {'b' => 'b'}
{x: 'x', **a}
#=> {:x=>"x", :a=>"a"}
{x: 'x', **b}
#=> TypeError (hash key "b" is not a Symbol)
```
When I do that implicitly, it works:
```
{x: 'x', **{'b' => 'b'}}
#=> {:x=>"x", "b"=>"b"}
```
At the same time:
```
{**{'b' => 'b'}}
# TypeError (hash key "b" is not a Symbol)
```
From my point of view, it definitely works inconsistently.
Could you help with this example or give an advice? (maybe I used it incorrectly?)
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
* [ruby-core:95972] [Ruby master Bug#16371] Inconsistent usage of Double splat operator
[not found] <redmine.issue-16371.20191126065007@ruby-lang.org>
` (2 preceding siblings ...)
2019-11-27 1:35 ` [ruby-core:95970] " matz
@ 2019-11-27 3:06 ` mame
3 siblings, 0 replies; 4+ messages in thread
From: mame @ 2019-11-27 3:06 UTC (permalink / raw
To: ruby-core
Issue #16371 has been updated by mame (Yusuke Endoh).
matz, the following is the current behaviors. Do you mean which should be fixed?
(1) 2.7, via variable
```
b = {"b" => "b"}; p({x: "x", **b}) #=> current behavior: {:x=>"x", "b"=>"b"}
```
(2) 2.6, via variable
```
b = {"b" => "b"}; p({x: "x", **b}) #=> current behavior: hash key "b" is not a Symbol (TypeError)
```
(3) 2.7, with literal
```
p({x: "x", **{"b" => "b"}}) #=> current behavior: {:x=>"x", "b"=>"b"}
```
(4) 2.6, with literal
```
p({x: "x", **{"b" => "b"}}) #=> current behavior: {:x=>"x", "b"=>"b"}
```
----------------------------------------
Bug #16371: Inconsistent usage of Double splat operator
https://bugs.ruby-lang.org/issues/16371#change-82807
* Author: dmytro.vasin (Dmytro Vasin)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: 2.6.0
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
Here is an issue with a weird behavior of ruby double splat operator:
```
a = {a: 'a'}
b = {'b' => 'b'}
{x: 'x', **a}
#=> {:x=>"x", :a=>"a"}
{x: 'x', **b}
#=> TypeError (hash key "b" is not a Symbol)
```
When I do that implicitly, it works:
```
{x: 'x', **{'b' => 'b'}}
#=> {:x=>"x", "b"=>"b"}
```
At the same time:
```
{**{'b' => 'b'}}
# TypeError (hash key "b" is not a Symbol)
```
From my point of view, it definitely works inconsistently.
Could you help with this example or give an advice? (maybe I used it incorrectly?)
--
https://bugs.ruby-lang.org/
^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <redmine.issue-16371.20191126065007@ruby-lang.org>
2019-11-26 6:50 ` [ruby-core:95951] [Ruby master Bug#16371] Inconsistent usage of Double splat operator dmytro.vasin
2019-11-26 7:32 ` [ruby-core:95952] " mame
2019-11-27 1:35 ` [ruby-core:95970] " matz
2019-11-27 3:06 ` [ruby-core:95972] " mame
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