[#99115] [Ruby master Bug#17023] How to prevent String memory to be relocated in ruby-ffi — larskanis@...
Issue #17023 has been reported by larskanis (Lars Kanis).
22 messages
2020/07/10
[#99375] [Ruby master Feature#17055] Allow suppressing uninitialized instance variable and method redefined verbose mode warnings — merch-redmine@...
Issue #17055 has been reported by jeremyevans0 (Jeremy Evans).
29 messages
2020/07/28
[#101207] [Ruby master Feature#17055] Allow suppressing uninitialized instance variable and method redefined verbose mode warnings
— merch-redmine@...
2020/12/02
Issue #17055 has been updated by jeremyevans0 (Jeremy Evans).
[#101231] Re: [Ruby master Feature#17055] Allow suppressing uninitialized instance variable and method redefined verbose mode warnings
— Austin Ziegler <halostatue@...>
2020/12/03
What does this mean?
[ruby-core:99390] [Ruby master Bug#17058] Array#delete_if doesn't change array instantly
From:
erik@...
Date:
2020-07-29 15:18:56 UTC
List:
ruby-core #99390
Issue #17058 has been reported by erik_schlyter (Erik Schlyter).
----------------------------------------
Bug #17058: Array#delete_if doesn't change array instantly
https://bugs.ruby-lang.org/issues/17058
* Author: erik_schlyter (Erik Schlyter)
* Status: Open
* Priority: Normal
* ruby -v: ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x86_64-linux]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
According to the documentation: https://ruby-doc.org/core-2.7.1/Array.html#method-i-delete_if
"The array is changed instantly every time the block is called, not after the iteration is over."
I've tried printing the array while iterating it:
```
a = [1,2,3,4,5,6,7]
a.delete_if{|x|
puts "During iteration: #{a}"
x % 2 == 0
}
puts "After iteration: #{a}"
```
The output is as follows:
```
During iteration: [1, 2, 3, 4, 5, 6, 7]
During iteration: [1, 2, 3, 4, 5, 6, 7]
During iteration: [1, 2, 3, 4, 5, 6, 7]
During iteration: [1, 3, 3, 4, 5, 6, 7]
During iteration: [1, 3, 3, 4, 5, 6, 7]
During iteration: [1, 3, 5, 4, 5, 6, 7]
During iteration: [1, 3, 5, 4, 5, 6, 7]
After iteration: [1, 3, 5, 7]
```
This functionality has changed somewhere between 2.2.2 and 2.4.0. When I use "ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]", I get the following (correct) output:
```
During iteration: [1, 2, 3, 4, 5, 6, 7]
During iteration: [1, 2, 3, 4, 5, 6, 7]
During iteration: [1, 3, 4, 5, 6, 7]
During iteration: [1, 3, 4, 5, 6, 7]
During iteration: [1, 3, 5, 6, 7]
During iteration: [1, 3, 5, 6, 7]
During iteration: [1, 3, 5, 7]
After iteration: [1, 3, 5, 7]
```
When I use "ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]" or the latest (2.7.1), I get the wrong output.
The functionality doesn't seem crucial, but the documentation should be correct.
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