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Make `ActiveSupport::TimeWithZone` match Ruby's handling of ambiguous
times by choosing the later period, e.g.
Ruby:
```
ENV["TZ"] = "Europe/Moscow"
Time.local(2014, 10, 26, 1, 0, 0) # => 2014-10-26 01:00:00 +0300
```
Before:
```
>> "2014-10-26 01:00:00".in_time_zone("Moscow")
TZInfo::AmbiguousTime: 26/10/2014 01:00 is an ambiguous local time.
```
After:
```
>> "2014-10-26 01:00:00".in_time_zone("Moscow")
=> Sun, 26 Oct 2014 01:00:00 MSK +03:00
```
Fixes #17395.
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Fix the "International Date Line West" timezone
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"Pacific/Midway" (-11) to "Etc/GMT+12" (-12).
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Compression has long been available, but opt-in and at a 16kB threshold.
It wasn't enabled by default due to CPU cost. Today it's cheap and
typical cache data is eminently compressible, such as HTML or JSON
fragments.
Compression dramatically reduces Memcached/Redis mem usage, which means
the same cache servers can store more data, which means higher hit
rates.
To disable compression, pass `compress: false` to the initializer.
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* Supports vanilla Redis, hiredis, and Redis::Distributed.
* Supports Memcached-like sharding across Redises with Redis::Distributed.
* Fault tolerant. If the Redis server is unavailable, no exceptions are
raised. Cache fetches are treated as misses and writes are dropped.
* Local cache. Hot in-memory primary cache within block/middleware scope.
* `read_/write_multi` support for Redis mget/mset. Use Redis::Distributed
4.0.1+ for distributed mget support.
* `delete_matched` support for Redis KEYS globs.
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Cache regexps generated from acronym_regex
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To be removed in Rails 6.0 (default for the deprecate helper). Code
moved around as well for the ActiveSupport::Deprecation modules, since
it was dependent on ActiveSupport::Inflector being loaded for it to
work. By "lazy loading" the Inflector code from within the Deprecation
code, we can require ActiveSupport::Deprecation from
ActiveSupport::Inflector and not get a circular dependency issue.
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The Problem
-----------
The following line from `String#camelize`:
string = string.sub(/^(?:#{inflections.acronym_regex}(?=\b|[A-Z_])|\w)/) { |match| match.downcase }
and the following line from `String#camelize`:
word.gsub!(/(?:(?<=([A-Za-z\d]))|\b)(#{inflections.acronym_regex})(?=\b|[^a-z])/) { "#{$1 && '_'.freeze }#{$2.downcase}" }#{$2.downcase}" }
Both generate the same regexep in the first part of the `.sub`/`.gsub`
method calls every time the function is called, creating an extra object
allocation each time. The value of `acronym_regex` only changes if the
user decides add an acronym to the current set of inflections and apends
another string on the the regexp generated here, but beyond that it
remains relatively static.
This has been around since acronym support was introduced back in 2011
in PR#1648.
Proposed Solution
-----------------
To avoid re-generating these strings every time these methods are
called, cache the values of these regular expressions in the
`ActiveSupport::Inflector::Inflections` instance, making it so these
regular expressions are only generated once, or when the acronym's are
added to.
Other notable changes is the attr_readers are nodoc'd, as they shouldn't
really be public APIs for users. Also, the new method,
define_acronym_regex_patterns, is the only method in charge of
manipulating @acronym_regex, and initialize_dup also makes use of that
new change.
** Note about fix for non-deterministic actionpack test **
With the introduction of `@acronym_underscore_regex` and
`@acronym_camelize_regex`, tests that manipulated these for a short
time, then reset them could caused test failures to happen. This
happened because the previous way we reset the `@acronyms` and
`@acronym_regex` was the set them using #instance_variable_set, which
wouldn't run the #define_acronym_regex_patterns method.
This has now been introduced into the actionpack tests to avoid this
failure.
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Verify credentials format before saving
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Currently, credentials does not check the format when saving. As a result,
incorrect data as yaml is also saved.
If credentials is used in config files., an error will occur in credential
yaml parsing before edit, and will not be able to edit it.
In order to prevent this, verify the format when saving.
Related: #30851
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Remove code duplication in ActiveSupport::Cache
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This is no longer used since fd6aaaa.
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Allow `Range#include?` on TWZ ranges
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In #11474 we prevented TWZ ranges being iterated over which matched
Ruby's handling of Time ranges and as a consequence `include?` stopped
working with both Time ranges and TWZ ranges. However in
ruby/ruby@b061634 support was added for `include?` to use `cover?` for
'linear' objects. Since we have no way of making Ruby consider TWZ
instances as 'linear' we have to override `Range#include?`.
Fixes #30799.
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Seeing the previously issued PRs about it, we can avoid the `nil`
comparisons that can happen in `assert_changes` by using plain `assert`
calls.
This is to avoid a deprecation warning about comparing `nil` values in
`assert_equal` for Minitest 5 and a crash in Minitest 6.
You can see the preparations done in [`assert_equal`][ae]. You can also
see that [`assert`][a] does not care about `nil`s.
[ae]: https://github.com/seattlerb/minitest/blob/ca6a71ca901016db09a5ad466b4adea4b52a504a/lib/minitest/assertions.rb#L159-L188
[a]: https://github.com/seattlerb/minitest/blob/ca6a71ca901016db09a5ad466b4adea4b52a504a/lib/minitest/assertions.rb#L131-L142
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These changes resolve a deprecation warning in `assert_no_changes`
when asserting that an expression evaluates to `nil` before and after
the passed block is evaluated.
The smallest demonstration of this edge case:
```ruby
assert_no_changes "nil" do
true # noop
end
```
Under the covers, this is evaluating
```ruby
assert_equal nil, nil
```
Minitest 5 issues a deprecation warning, and Minitest will fail
completely.
For additional context, the motivations and implications of this change
to Minitest have been discussed at length in [seattlerb/minitest#666][].
[seattlerb/minitest#666]: https://github.com/seattlerb/minitest/issues/666
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Acronym inflections are stored with lowercase keys in the hash but
the match wasn't being lowercased before being looked up in the hash.
This shouldn't have any performance impact because before it would
fail to find the acronym and perform the `downcase` operation anyway.
Fixes #31052.
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Fix french spelling mistake
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Trés -> Très
https://fr.wiktionary.org/wiki/tr%C3%A8s
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bogdanvlviv/method_signature_prev-next-day-month-year_for_time
Mirror the API of Ruby stdlib for #prev_day, #next_day, #prev_month, #next_month, #prev_year, #next_year
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[ci skip] show the correct example to demonstrate inflections.
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These methods unused since 5533696.
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Follow up of #31004.
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Related to #30972
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The documentation wrongly suggests that Time extensions to Numeric include
methods months and years, when these belong to Integer.
Update both classes and guides.
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Performance improvements for acts_like? method
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activesupport/lib/active_support/core_ext/object/acts_like.rb
acts_like?
Add a case statement to use direct symbols instead of string
interpolation for the three scenarios I found in the Rails codebase:
time, date, and string.
For time/date/string, this change prevents two string allocations for
each time the method is called and speeds up the method by ~2.7x. For
other arguments, there is no memory difference and performance
difference is within margin of error.
begin
require "bundler/inline"
rescue LoadError => e
$stderr.puts "Bundler version 1.10 or later is required. Please update
your Bundler"
raise e
end
gemfile(true) do
source "https://rubygems.org"
gem "rails", github: "rails/rails"
gem "arel", github: "rails/arel"
gem "benchmark-ips"
end
def allocate_count
GC.disable
before = ObjectSpace.count_objects
yield
after = ObjectSpace.count_objects
after.each { |k,v| after[k] = v - before[k] }
after[:T_HASH] -= 1 # probe effect - we created the before hash.
GC.enable
result = after.reject { |k,v| v == 0 }
GC.start
result
end
class Object
def fast_acts_like?(duck)
case duck
when :time
respond_to? :acts_like_time?
when :date
respond_to? :acts_like_date?
when :string
respond_to? :acts_like_string?
else
respond_to? :"acts_like_#{duck}?"
end
end
end
puts
puts " acts_like? ".center(80, '=')
puts
obj = ''.freeze
%i(time date string super_hacka).each do |type|
puts " #{type} ".center(80, '=')
puts " Memory Usage ".center(80, "=")
puts
puts "value.acts_like?"
puts allocate_count { 1000.times { obj.acts_like?(type) } }
puts "value.fast_acts_like?"
puts allocate_count { 1000.times { obj.fast_acts_like?(type) } }
puts
puts " Benchmark.ips ".center(80, "=")
puts
Benchmark.ips do |x|
x.report("acts_like?") { obj.acts_like?(type) }
x.report("fast_acts_like?") { obj.fast_acts_like?(type) }
x.compare!
end
end
================================== acts_like? ==================================
===================================== time =====================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-1983, :T_STRING=>2052, :T_IMEMO=>1}
value.fast_acts_like?
{:FREE=>-1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 104.281k i/100ms
fast_acts_like? 155.523k i/100ms
Calculating -------------------------------------
acts_like? 1.688M (±10.7%) i/s - 8.342M in 5.003804s
fast_acts_like? 4.596M (±12.1%) i/s - 22.551M in 5.000124s
Comparison:
fast_acts_like?: 4596162.4 i/s
acts_like?: 1688163.8 i/s - 2.72x slower
===================================== date =====================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-2001, :T_STRING=>2000}
value.fast_acts_like?
{:FREE=>-1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 85.372k i/100ms
fast_acts_like? 166.097k i/100ms
Calculating -------------------------------------
acts_like? 1.720M (± 8.3%) i/s - 8.537M in 5.001003s
fast_acts_like? 4.695M (±10.1%) i/s - 23.254M in 5.010734s
Comparison:
fast_acts_like?: 4695493.1 i/s
acts_like?: 1719637.9 i/s - 2.73x slower
==================================== string ====================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-2001, :T_STRING=>2000}
value.fast_acts_like?
{:FREE=>-1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 100.221k i/100ms
fast_acts_like? 182.841k i/100ms
Calculating -------------------------------------
acts_like? 1.706M (± 7.3%) i/s - 8.519M in 5.022331s
fast_acts_like? 3.968M (±22.8%) i/s - 18.650M in 5.006762s
Comparison:
fast_acts_like?: 3967972.9 i/s
acts_like?: 1705773.7 i/s - 2.33x slower
================================= super_hacka ==================================
================================= Memory Usage =================================
value.acts_like?
{:FREE=>-2004, :T_STRING=>2002, :T_SYMBOL=>1}
value.fast_acts_like?
{:FREE=>-2003, :T_STRING=>2001, :T_SYMBOL=>1}
================================ Benchmark.ips =================================
Warming up --------------------------------------
acts_like? 100.344k i/100ms
fast_acts_like? 101.690k i/100ms
Calculating -------------------------------------
acts_like? 1.617M (± 7.5%) i/s - 8.128M in 5.055285s
fast_acts_like? 1.534M (±10.1%) i/s - 7.627M in 5.031052s
Comparison:
acts_like?: 1617390.7 i/s
fast_acts_like?: 1533897.3 i/s - same-ish: difference falls within error
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Fix #to_json for IO objects, fixes #26132
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This basically reverts 8da30ad6be34339124ba4cb4e36aea260dda12bc
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In order to keep this method compatible with the Ruby 2.5 version of Hash#slice.
This bahavior is actually slightly incompatibile with previous versions of Active Support
but it might not cause a real problem, since HWIA, the biggest use case of Hash subclassing here,
already overrides `slice` to return another HWIA.
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since r60229
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Instructions to use `h` or `html_escape` in ERB templates were added to
`actionpack/lib/action_view/template_handlers/erb.rb` in a1b0349 (Rails
2.1), but ERB has automatically escaped values since Rails 3.
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Fixes ActiveSupport::Cache::FileStore#cleanup bug which prevented it from removing expired entries
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cleaning up the expired cache keys
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`HashWithIndifferentAccess`
Currently, `#transform_values`, `#select` and `#reject` return instance
of `HashWithIndifferentAccess`. But `#transform_keys` returns instance
of Hash. This behavior is a bit confusing.
I think that `HashWithIndifferentAccess#transform_keys` should also return
instance of `HashWithIndifferentAccess` as well as other methods.
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I got this error in production using Puma in multi-threaded mode:
```
RuntimeError: Digest::Base cannot be directly inherited in Ruby
from active_support/security_utils.rb:23:in `variable_size_secure_compare'
from active_support/security_utils.rb:23:in `hexdigest'
from active_support/security_utils.rb:23:in `digest'
```
Looks like Digest uses const_missing to load Digest::SHA256 (https://github.com/ruby/ruby/blob/trunk/ext/digest/lib/digest.rb#L8)
- https://bugs.ruby-lang.org/issues/9494
- https://github.com/ruby/ruby/commit/c02fa39463a0c6bf698b01bc610135604aca2ff4
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