Activity
From 04/30/2020 to 05/06/2020
05/06/2020
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11:33 PM Feature #16786: Light-weight scheduler for improved concurrency.
- > My big concern here is that this does not cover why #13618 was deficient and this complete greenfield implementation solves the issues it had?
This proposal is really an evolution of #13618. The reasons why that proposal did not mov... -
11:25 PM Bug #16831: Running `Pathname#glob` with `File::FNM_DOTMATCH` option loses `.` and `..`
- nobu (Nobuyoshi Nakada) wrote in #note-1:
> Actually `.` and `..` entries are kept.
> ...
That's true, but I feel the following code should have consistent results:
``` ruby
require 'pathname'
pathname = Pathname.pwd
Pathname... -
06:40 AM Bug #16831: Running `Pathname#glob` with `File::FNM_DOTMATCH` option loses `.` and `..`
- Actually `.` and `..` entries are kept.
Just `Pathname("/Users/jnito/dev/..")` is cleaned up as `Pathname("/Users/jnito")`. -
10:42 PM Feature #16832: Use #name rather than #inspect to build "uninitialized constant" error messages
- From your example, why don't we see `uninitialized constant Shipit::Stack(id: integer, environment: string, ...)::Foo`?
I feel calling `name` here is a hack, if people return a useless String for `inspect` that's the bug, `inspect` is... -
01:01 PM Feature #16832: Use #name rather than #inspect to build "uninitialized constant" error messages
- Nobu recommended creating an issue request here, so I won't comment on that in
itself - but I would like to point out that ruby users may wonder why/if/how
to use #name rather than #inspect, if applicable, so that should be considered
... -
11:38 AM Feature #16832 (Closed): Use #name rather than #inspect to build "uninitialized constant" error messages
- While debugging a bug in Rails (https://github.com/rails/rails/pull/37632#issuecomment-623387954) I noticed `NameError` calls `inspect` on the `const_get` receiver to build its error message.
The problem is that some libraries such as... -
10:32 PM Bug #16835: SIGCHLD + system new behavior on 2.6
- Oh that's definitely interesting. Both on my mac and on a freebsd server I spot-checked on it outputs nothing. But evidently there isn't a settled "correct" answer for how this should behave.
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10:18 PM Bug #16835: SIGCHLD + system new behavior on 2.6
- If I compile that program on OpenBSD, it outputs `Handler`. So system(3) behavior appears to be operating-system (or libc) specific.
-
- Also I have tested and the old behavior (not calling the CLD signal handler) does appear to match the glibc behavior
``` c
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
void proc_exit()
{
pr... -
- jeremyevans0 (Jeremy Evans) wrote in #note-2:
> I agree that based on a review of the commit message, this change was unintended, and since the issue was not known previously, it was not documented.
> ...
Going by https://github.com/ru... -
- I agree that based on a review of the commit message, this change was unintended, and since the issue was not known previously, it was not documented.
However, I think the new behavior makes more sense. `system` creates a child proces... -
- In rubies < 2.5, the `system` command did not trigger sigchld signal traps. On ruby >= 2.6 it does. This appears to have been introduced by https://github.com/ruby/ruby/commit/054a412d540e7ed2de63d68da753f585ea6616c3 . To observe the ...
-
- sawa wrote:
> If that was what you meant, then that is not the case. Array mixes-in
> ...
Happens to me as well a lot - I always mix these two up. May be because
the name is so similar. :)
To the suggestion itself: I have no part... -
04:44 PM Feature #16833: Add Enumerable#empty?
- Enumerators can behave very differently than arrays. Some have side-effects. What's supposed to happen with those?
```
require 'stringio'
s = StringIO.new("first\nsecond\nthird\nlast").each_line
s.first # => "first"
s.first # => "... -
04:40 PM Feature #16833: Add Enumerable#empty?
- Your use case is not clear. Why can't you do this?
```ruby
table_rows = [{ data: ['First', 'Second', 'Third'], config: {} }, { data: [4, 5, 6], config: { color: 'red' } }].to_enum
table_rows.to_a.dig(0, :data) # => ["First", "Second", "... -
- Not sure what you mean by
>Enumerator, something mixed into Array
Do you mean this?
> ...
If that was what you meant, then that is not the case. `Array` mixes-in `Enumerable`, not `Enumerator`.
Even if that was the case, it is not cl... -
02:09 PM Feature #16833 (Assigned): Add Enumerable#empty?
- It was surprising to me that Enumerator, something mixed into Array, does not include `#empty?`. I think it is reasonable to assume people may have to guard iterating and other logic based on the emptiness of an enumerator, such was my c...
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- So that `TEST_EXCLUDES` option in common.mk works.
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- 05:49 PM Revision 2273af56 (git): * 2020-05-07 [ci skip]
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05:47 PM Revision 1e3c910b (git): Enable OPT_CHECKED_RUN on MJIT for debugging
- Trying to debug errors like
http://ci.rvm.jp/results/trunk-mjit@silicon-docker/2921397
http://ci.rvm.jp/results/trunk-mjit@silicon-docker/2894526 -
- Proposed patch: https://github.com/ruby/ruby/pull/3084
Right now `SomeClass.method` is properly named, but `SomeModule.method`
is displayed as `#<Module:0x000055eb5d95adc8>.method` which makes
profiling annoying.
This particularl... -
- * [Feature #16832] Use `#name` rather than `#inspect` to build "uninitialized constant" error messages (byroot)
* As `#name` on `Module` and `Class` is more likely to return a proper constant name than `#inspect` -
- To get rid of calling `getaddrinfo`, which may keep FDs
internally. -
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- `getaddrinfo` on macOS seems keeping FDs to query host names
internally. -
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- It is more popular than /proc/self/fd.
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- As now `Object#===` document is separated from `rb_equal`, this note
no longer makes sense. -
- `rb_equal` may be inlined in `case_equal` and actually same code
is generated twice.
05/05/2020
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- > also think it makes sense: both are internal, and one of them of make install-ed and the other not, because include/ruby/internal/ needs to be public headers to compile correctly.
Agreed. I think because @nobu was going to use `int... -
- shyouhei (Shyouhei Urabe) wrote in #note-6:
> https://github.com/ruby/ruby/pull/3079
Looks a lot clearer to me :)
I think indeed having `ruby/internal/attr/const.h` instead of `ruby/impl/attr/const.h` would be even clearer,
and for the... -
06:43 AM Misc #16803: Discussion: those internal macros reside in public API headers
- ioquatix (Samuel Williams) wrote in #note-7:
> If it was me, I'd literally call it `ruby/internal/file.h` to make it very clear, along with `ruby3` -> `rb_internal_/RB_INTERNAL_`
> ...
That arrangement could be confusing when @nobu mer... -
- If it was me, I'd literally call it `ruby/internal/file.h` to make it very clear, along with `ruby3` -> `rb_internal_/RB_INTERNAL_`
Assuming `impl` means implementation, it's not clear that it's private, but `internal` does mean a cer... -
- Running `Dir.glob`, `Pathname.glob` with `File::FNM_DOTMATCH` option keeps `.` and `..` as their basename:
``` ruby
require 'pathname'
pathname = Pathname.pwd
#=> #<Pathname:/Users/jnito/dev>
# Dir.glob keeps "." and ".."
Dir... -
-
- * Multiple times people have been confused and believed rb_equal()
called #=== but it does not, it calls #==.
* This optimization has a subtle side effect for Float::NAN,
which is now documented. -
- * rb_equal() already checks using `obj1 == obj2`.
-
- I've made by best to improve the documentation in 7bde981.
@nobu: is it feasible to improve stacktraces raised within fibers? -
- I believe this is due to the fact that `next`'s implementation uses a `Fiber`.
If you use `to_a` instead of `next`, you will get the stacktrace you were hoping for.
If you replace your definition of `execution_method_a` with:
``... - 09:04 PM Revision 86391a55 (git): * 2020-05-06 [ci skip]
- 09:04 PM Revision 7bde9812 (git): Improve documentation for Enumerator#next, next_values, peek and peek_values.
- [DOC] [#16829]
- 09:04 PM Revision 77f19d26 (git): Fix gemspec
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- I'm strongly against this, for compatibility reasons and because current choice is a consistent convention.
Before proposing any incompatible change, especially for an API that is very much in use, please provide a compelling use case... -
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07:58 AM Bug #16830 (Closed): URI.parse raises NoMethodError instead of URI::InvalidURIError
- When parsing an invalid uri using `URI.parse` it is possible to get `NoMethodError (undefined method `[]' for nil:NilClass)`. I would expect `URI::InvalidURIError` or similar.
Example with a trace:
```
irb(main):002:0> URI.parse("ld... -
- https://bugs.ruby-lang.org/issues/16830
https://github.com/ruby/uri/commit/b4bf8c1217 -
10:09 AM Bug #16825: JSON#generate gives invalid json string
- shyouhei (Shyouhei Urabe) wrote in #note-2:
> Actually it is not an _invalid_ JSON in any sense. RFC 8259 section 4 explicitly allows such duplicated names:
> ...
I am little confused now, RFC states that
> The names within an object SH... -
05/04/2020
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09:15 PM Bug #16829 (Open): Exceptions raised from within an enumerated method lose part of their stacktrace
- Consider the following code:
``` ruby
class Test
include Enumerable
def each(&block)
raise "Boom"
end
end
def execution_method_a
Test.new.to_enum(:each).next
end
def execution_method_b
Test.new.each do
... - 08:50 PM Revision dc13a980 (git): * 2020-05-05 [ci skip]
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08:50 PM Revision 5ef019e8 (git): Output compaction stats in one loop / eliminate 0 counts
- We only need to loop `T_MASK` times once. Also, not every value between
0 and `T_MASK` is an actual Ruby type. Before this change, some
integers were being added to the result hash even though they aren't
actual types. This patch omit... -
- Is this a bit like .scan(), but applied to the pattern matching style? (Not
sure if I understood this completely but it reminds me a bit of using .scan()
and MatchData on the result possibly.) -
- I am a noob in this area who don't understand what is good about it. Can you show us a bit more realistic example? The proposal kind of seems illustrative to me.
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04:13 AM Feature #16828 (Closed): Introduce find patterns
- I propose to add find pattern to pattern matching.
# Specification
```
find_pattern: Constant(*var, pat, ..., *var)
| Constant[*var, pat, ..., *var]
| [*var, pat, ..., *var]
```
This pattern is similar ... -
-
- https://github.com/ruby/ruby/pull/3079
-
-
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- Due to the change in 3893a8dd42fb3bbd71750648c3c0de118955a6ea,
there is no longer a need to put true/false. -
- * Folding results should not be empty.
If `OnigCodePointCount(to->n)` were 0, `for` loop using `fn`
wouldn't execute and `ncs` elements are not initialized.
```
enc/unicode.c:557:21: warning: 'ncs[0]' may be used uninitialized ... -
03:01 AM Feature #16822: Array slicing: nils and edge cases
- Slicing returns nil when the index is out of bounds, and that can be a useful signal that something is wrong and we should fail fast. Having that nil return value provides information that is not present if it's auto-converted to an empt...
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- For some reason 0776198486 didn't fail
https://rubyci.org/logs/rubyci.s3.amazonaws.com/solaris10-gcc/ruby-master/log/20200503T230004Z.log.html.gz
even while it was before 9aa5fe1bf8.
Anyway, there's no need to keep the change anymore.
05/03/2020
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- I think 9aa5fe1bf89db8cd215b24d8ddfb668714681b83 helps this issue too.
-
- MinGW test_jit fails with no error message. Perhaps linker flags should
not be passed when compilation is happening.
Anyway splitting these stages doesn't matter for performance. So let me
just split it to fix the issue. Probably this h... -
- using -Winvalid-pch
https://rubyci.org/logs/rubyci.s3.amazonaws.com/solaris10-gcc/ruby-master/log/20200501T170004Z.fail.html.gz -
10:16 PM Feature #16791: Shortcut for Process::Status.exitstatus
- nobu (Nobuyoshi Nakada) wrote in #note-4:
> Even `exec` works better than `system` & `exit`, unless you need some clean-ups.
You're right. What can you say about this 'vararg require':
```
module Kernel
alias :require_1 :requi... -
- It has caused errors by ENOSPC like
https://travis-ci.org/github/ruby/ruby/jobs/682520961 too often.
I cleared all cache of Travis yesterday, but it didn't help it. Until
somebody figures out how to fix it, let me exclude it from CI sta... -
- An expression using `static const` value seems not considered as
`static const` by Visual C. - 03:00 PM Revision dfbbd94e (git): * 2020-05-04 [ci skip]
-
- And utilize more bits even if DBL_MANT_DIG > 53.
-
- shyouhei (Shyouhei Urabe) wrote in #note-4:
> What about those names, like `ruby_impl` or even, `rbimpl`?
I think those are already much clearer than `ruby3_`.
`ruby_internal_` might be even clearer but indeed it's long.
I think ... -
- Thank you for looking at the new macros/functions.
Eregon (Benoit Daloze) wrote in #note-3:
> I took a look, these look fine to me, they seem almost all about portability, except `RUBY3_ANYARGS_DISPATCH*`.
Yes. ANYARGS related on... -
-
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- Actually it is not an _invalid_ JSON in any sense. RFC 8259 section 4 explicitly allows such duplicated names:
https://tools.ietf.org/html/rfc8259#section-4 -
- This support was accidentally removed in 818d6d33368a396d9cd3d1a34a84015a9e76c5c8.
-
- It turned out that the pdb corruption happens on Visual Studio 2015 as
well.
https://ci.appveyor.com/project/ruby/ruby/builds/32602953/job/3gj43q18wqeiy729 -
- Fix https://github.com/ruby/ruby/runs/636020145 without skipping too
many tests.
It seems that .c -> .o with debug flags and .o -> .so without debug
flags did not generate .dSYM but now .c -> .so with debug flags seems to
generate a .dS... -
- duerst (Martin Dürst) wrote in #note-20:
> I'm not sure if having the assignment on the following line is possible (see below), but I think it should be. I'll submit a feature request if it is not yet possible.
It was removed at http... -
12:04 AM Feature #15921: R-assign (rightward-assignment) operator
- For me, the main use case is at the end of method chains. Instead of e.g.
```ruby
Word = Struct.new(:text, :count)
words = $stdin.read
.scan(/[-\w']+/)
.group_by(&:downcase)
.collect { |key, value| Word.new(key, v... -
- GCC/Clang can optimize to calculate `sin(x)` and `cos(x)` at once,
when the both are closely called on the same argument.
Similar optimization is possible for `__sinpi(x)` and `__cospi(x)`
if available, which calculate arguments in radi... -
- `RUBY_FL_SEEN_OBJ_ID` can be set by #object_id.
-
- It's to avoid memory leak for actual usage (because they don't get
unloaded properly), but also for fixing CI timed out due to JIT
compaction taking too long time on --jit-wait (which runs every time)
http://ci.rvm.jp/results/trunk-mjit-... -
03:07 AM Feature #16827 (Closed): C API for writing custom random number generator that can be used as Random objects
- I want to write custom random number generators (RNGs) that can be used as an alternative to a Random object.
Now custom RNGs with `#rand` method can be used for that purpose, but there is the method call overhead in the current impleme...
05/02/2020
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- vo.x (Vit Ondruch) wrote in #note-7:
> Also, not sure what is the rationale for mainsrc, but at the first look, I couldn't find the sources, because it is somehow unexpected name (at least to me).
Indeed, I missed that, why `mainsrc`... -
09:05 PM Misc #16747: Repository reorganization request
- vo.x (Vit Ondruch) wrote in #note-7:
> Also, not sure what is the rationale for mainsrc, but at the first look, I couldn't find the sources, because it is somehow unexpected name (at least to me).
`src` is what people are used to, so... -
06:45 PM Misc #16747: Repository reorganization request
- shyouhei (Shyouhei Urabe) wrote in #note-5:
> - For instance ccan is a header-only library. Should it be placed under include?
It is not just header only library, but vendored code. It would be nice if this kind of code lives outsid... -
- IMHO it's best if `include/` in the repository corresponds closely to what ends up in the install dir.
So I prefer ccan in `src/`.
`make test*` uses the repository dir, so adding anything else under `include/` would expose it to thos... -
- Great work, thank you.
Questions/discussions related to header files:
- For instance ccan is a header-only library. Should it be placed under include?
- What about for instance vm_core.h etc?
- Should files under include be instal... -
- https://github.com/nobu/ruby/tree/feature/src-dir is the status quo.
-
03:23 PM Revision 224f29c8 (git): spec/ruby/core/process/clock_getres_spec.rb: lax the resolution limit
- Android is Linux, but the clock resolution is 10 milliseconds.
I think that 1 microsecond is too strict for embedded environment.
This change laxes the limit to 10 milliseconds. - 03:16 PM Revision fe2a832a (git): * 2020-05-03 [ci skip]
-
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-
-
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- The exact exit status value of command failed to run is not a
spec, but a platform dependent implementation detail. Just it is
not "success". -
- Applied in changeset commit:git|a2be428c5fec31b8adbd5ac087e7637ddf7e54d0.
----------
Fix ObjectSpace::WeakMap#key? to work if the value is nil
* Fixes [Bug #16826] -
- I'll fix this.
-
- ```
$ ruby -e 'map=ObjectSpace::WeakMap.new; map[:foo] = 4; p map; p map.key? :foo'
#<ObjectSpace::WeakMap:0x000055fbe0c38c00: :foo => 4>
true # OK
$ ruby -e 'map=ObjectSpace::WeakMap.new; map[:foo] = nil; p map; p map.key? :foo'... -
- * Fixes [Bug #16826]
-
-
-
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- As fork(2) is deprecated, its calls must be guarded by
`COMPILER_WARNING_IGNORED(-Wdeprecated-declarations)`.
All usages of fork(2) in process have been alread guarded. A new call
to fork(2) was added in ruby.c with f22c4ff359498ab342e4... -
- shyouhei (Shyouhei Urabe) wrote in #note-2:
> If you want the complete list, new macros are:
> ...
I took a look, these look fine to me, they seem almost all about portability, except `RUBY3_ANYARGS_DISPATCH*`.
I think most of those... -
- Interesting.
As `JSON.generate` converts the keys by `to_s`, it can be funnier.
```sh
$ ruby -rjson -e 'puts JSON.generate({"main"=>"string", :main=>"symbol", self=>"object"})'
{"main":"string","main":"symbol","main":"object"}
`... -
- Hello Guys! First of all, thank you for working on the Ruby language.
I observed a peculiarity while playing around with `JSON#generate`. When hash contains keys of the same word/literal but as symbol and string in the same hash, the ... -
- I think it would be good to make it a habit to justify any syntax change with some motivation.
For instance, I would suggest making sure the point is clear in the ticket before accepting a syntax change.
I don't see much examples her... -
- * [Feature #15771] Add `String#split` option to set `split_type string` with a single space separator (sawa)
* Proposal by 284km. Allow splitting literally by `" "` when the argument is `" "`. -
- - [Misc #16747] Repository reorganization request (shyouhei)
- @hsbt says:
> I remember @nobu has the working branch about this.
I would like to know its current situation.
-
- shevegen (Robert A. Heiler) wrote in #note-9:
> The optionparser situation is indeed quite ... peculiar to me:
> ...
It has been available since 6 years ago, for your [Feature #9864].
```
$ ruby -roptionparser -e 'ARGV.parse!' -- -... -
- The optionparser situation is indeed quite ... peculiar to me:
require 'optparse'
OptionParser.new
My brain has a hard time with it. I'd prefer:
require 'optionparser'
or
require 'option_parser' # <- would...
05/01/2020
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11:53 PM Feature #16824: Follow RubyGems naming conventions for the stdlib
- @marcandre AFAIK some gem ownerships were already transferred back to claim std-lib names. Looking at those examples, majority of those conflicts could be solved in the same way if needed (long-term).
The main question in here is if R... -
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- We can't do this in general, sadly. For example, there exist two gems `file-utils` and `file_utils`, both of which use `require 'file_utils'` to be used.
Some other gems are conflict free (e.g. neither `open_struct` or `open-struct` a... -
02:54 PM Feature #16824: Follow RubyGems naming conventions for the stdlib
- @naruse @nobu The "use case" for this is Rubyists nowadays have a very strong intuition that "Foo::BarBaz" module typically required via `foo/bar_baz` path. This convention is encouraged by tutorials (including RubyGems' linked above, wi...
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- The same also works for English.rb which is part of Ruby itself. It is very confusing to do `require 'English'` (require file with initial capital letter).
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- @naruse I was thinking about the same for a while as well. My use-case in here is simple. I often require 'secure_random' since that should be standard filename for file defying SecureRandom class/module, but actually I end up with error...
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01:48 PM Feature #16824: Follow RubyGems naming conventions for the stdlib
- Features should have use cases.
-
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03:33 AM Feature #16824 (Rejected): Follow RubyGems naming conventions for the stdlib
- It's been really nice that most gems these days follow the RubyGems naming convention, so you know exactly what to require just from seeing the gem name: https://guides.rubygems.org/name-your-gem/
I wonder if it would be possible to a... - 05:41 PM Revision bb2ca762 (git): * 2020-05-02 [ci skip]
-
- to be investigated later
https://rubyci.org/logs/rubyci.s3.amazonaws.com/solaris10-gcc/ruby-master/log/20200501T160004Z.fail.html.gz -
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- Also renamed as like as a constant.
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- caused by 818d6d33368a396d9cd3d1a34a84015a9e76c5c8, for now.
I'll take a look at them tomorrow. -
- to fix
https://ci.appveyor.com/project/ruby/ruby/builds/32577700/job/yh61rom35wt2uv39
It was for JIT compaction, and we don't support it on mswin. -
- As zero variadic macro argument, `rb_scan_args(argc, argv, "")`
(or `"0"`), means 0-arity method and should be defined so, that
case doesn't need to consider. -
-
-
- as well. And also unit->c_file doesn't exist in mswin.
https://github.com/ruby/ruby/runs/635915704 -
08:46 AM Bug #16780 (Assigned): Net::FTP PUT command issuing Net::ReadTimeout too quickly
- @naruse It seems that the change was introduced by your commit. Could you check it?
-
- to improve code locality.
Using benchmark-driver/sinatra with 100 methods JIT-ed,
[Before] 12149.97 rps
1.3M /tmp/_ruby_mjit_p31171u145.so
[After] 12818.83 rps
260K /tmp/_ruby_mjit_p32155u145.so
(VM is 13714.89 rps) -
- While `tool/sync_default_gems` can be useful to overwrite files, in some circumstances it won't help (e.g. different changes in both directories). I also wanted to move commits across repositories and not loose history.
I found a soluti... -
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-
- to child compile_status
- 07:25 AM Revision 6eed4d1b (git): [ruby/matrix] v0.3.0
- 07:25 AM Revision 9b5675b3 (git): [ruby/matrix] Add Matrix#adjoint [#14]
- Patch adapted from Alessandro Minali
- 07:25 AM Revision 07fd6dc4 (git): [ruby/matrix] Optimize Matrix#*
- 07:25 AM Revision 3cb038cc (git): [ruby/matrix] Fix Matrix#orthogonal?
- 07:25 AM Revision 7d360efe (git): [ruby/matrix] Fix Matrix#unitary? [#14]
-
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- I'm trying to make it possible to include all JIT-ed code in a single C
file. This is needed to guarantee uniqueness of all function names -
- because we support JIT compaction on it
-
- Running C compiler for JIT compaction inside a critical section may lock
main thread for a long time when it triggers GC. As I'm planning to
increase this duration a bit, I'd like to make sure this doesn't stop
the world.
For now, I cho... -
04/30/2020
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- I do not have a strong preference here either way; I guess one can reason in
favour for both behaviour types/styles, and I think a primary point in the
suggestion is that it refers to startless/endless situations, such as "5..",
whic... -
- (First of all, I understand that the proposed change can break code, but I expect it not to be a large amount empirically.)
I propose that methods that slice an array (`#slice` and `#[]`) and return a sub-array in the normal case, sho... -
07:18 PM Misc #16775: DevelopersMeeting20200514Japan
- * [Feature #9758] Allow setting SSLContext#extra_chain_cert in Net::HTTP (stan3)
* useful to allow https with cert chain, small patch, few :+1s -
- * [Feature #16822] Array slicing: nils and edge cases (zverok)
* Never return `nil` from `ary[start...end]` even if out of arrays' bounds - 05:32 PM Revision 9014c900 (git): * 2020-05-01 [ci skip]
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05:32 PM Revision 5a9d2da7 (git): Remove deprecated rb_require_safe
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- IRB::ReadlineInputMethod#initialize sets via IRB.set_encoding.
-
12:20 PM Bug #16823 (Closed): Bundler related manual pages are corrupted
- We recently found out that bundler related manual pages we get by building and installing ruby 2.6 (and as far as I can tell all newer versions as well) are corrupted (we are building with `--with-mantype=man`).
The reason is that, e.... -
- Your proposal to distinguish `nil` from `false` is ad hoc, and is not a real solution for your use case, which is to add a value to a hash only when it does not yet have a corresponding key.
Following your way of doing it, you would sti... -
- bsarrazin (Ben Sarrazin) wrote in #note-7:
> Kotlin has this feature, Swift has this feature, many other languages have this feature.
No. Kotlin does not have this feature (distinguish `false` and `null`). It is a really bad idea f... -
04:16 AM Feature #16821: gem version notation for "rational version" compatibility
- Thank you for the quick response. Yes, I will do refile there. Sorry for mistakenly filing here.
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- Can you report it to rubygems' upstream? It has its own tracker: https://github.com/rubygems/rubygems
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- 02:48 AM Revision 14b5a3b4 (git): * 2020-04-30 [ci skip]
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- Readline::VERSION may not be a single word, e.g EditLine wrapper
when linked with editline.