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On every iteration of generating a cache for a collection a “digest path” is calculated even though it’s exactly the same for every element.
This PR exposes a method `digest_path_from_virtual` that returns back a “digest_path”. This can in turn be passed back into `cache_fragment_name`. This not only does less work, but it also (you guessed it) uses less memory.
before: Total allocated: 762539 bytes (7035 objects)
after: Total allocated: 743590 bytes (6621 objects)
(762539 - 743590)/ 762539.0 # => 2.4% faster ⚡️⚡️
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When no dependencies are present to be digested there is no reason to build an array just to turn around and turn it back into a string.
The dependencies array is not mutated in this method so we can use the same empty array across all invocations.
Total allocated: 791402 bytes (7294 objects)
Total allocated: 777442 bytes (7132 objects)
(791402 - 777442) / 791402.0 # => 1.76 % speed improvement
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Finish converting whitelist and blacklist references
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Use public_send in value_for_collection
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Instead of dropping it completely in case someone is relying (probably
inadvertenly) on it.
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Avoid exposing private methods in view's helpers. However, as
`extract_values_from_collection` is only called from
`options_from_collection_for_select` where `value_for_collection` is
previously called, this case was already covered. The change makes
anyway sense for consistency and in case the code changes in the
future.
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Avoid exposing private methods in view's helpers.
Fixes https://github.com/rails/rails/issues/33546
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emaxi/feature/add-missing-documentation-option-to-number-to-currency
Add missing documentation option to number_to_currency
[ci skip]
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To prevent style check in review like https://github.com/rails/rails/pull/33608#discussion_r211087605.
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This commit follows the path we started at commit #ea4f0e2
and continued at PR #33229.
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In cases where the MatchData object is not used, this provides a speed-up:
https://github.com/JuanitoFatas/fast-ruby/#stringmatch-vs-stringmatch-vs-stringstart_withstringend_with-code-start-code-end
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Keep time_tag docs up-to-date.
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The pubdate attribute was removed from the spec, see
940eec417f20e53abd3e3114c7fa845dac0d3a62 for context.
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Special form_with attributes `skip_default_ids` and `allow_method_names_outside_object`
attributes are leaking into html attributes of option select tag helpers.
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`button_to` was throwing exception when invoked with `params` hash that
contains symbol and string keys. The reason for the exception was that
`to_form_params` was comparing the given symbol and string keys.
The issue is fixed by turning all keys to strings inside
`to_form_params` before comparing them.
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Related to https://github.com/rails/rails/pull/24386#issuecomment-403926683
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Add safe html support to arrays of translations
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Follow up #32190
[ci skip]
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to customize year
names. Lambda should be passed to use this option. Example:
date_select('user_birthday', '', start_year: 1998, end_year: 2000, year_format: ->year { "Heisei #{year - 1988}" })
The HTML produced:
<select id="user_birthday__1i" name="user_birthday[(1i)]">
<option value="1998">Heisei 10</option>
<option value="1999">Heisei 11</option>
<option value="2000">Heisei 12</option>
</select>
/* The rest is omitted */
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Follow up of #32958.
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[ci skip]
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* Concurrent::Map usage was removed from this file in 3239ed48d28f3c0baf4445e6c279107e892b7cab
* Monitor usage was removed in f233598d2da773c2024cbe62a199ddc70d9fd7a1
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Follows #32612
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Allow usage of strings as locals for partial renderer
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Caused at 9276ea89d2b0be9fdd1ad6590857f8d45a38c267.
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Or it would raise if the argument was frozen.
And even with this change, it would still reduce String allocations together with 9276ea89d2b0be9fdd1ad6590857f8d45a38c267
because `escape` should be `true` in most cases
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This method is called against each tag option for each tag,
and creates an extra garbage String per each call
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Use ImageProcessing gem for ActiveStorage variants
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Add the `nonce: true` option for `javascript_include_tag` helper.
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q-centrix/perf-improvement-translation-helper-default-array
Only create an array with default options if we have default options
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If the options passed in don't have a default key, there's no point in
creating an array from those empty results when we can just go straight
to creating an empty array.
Benchmarks:
```ruby
master_version with false
{:FREE=>-2497, :T_STRING=>52, :T_ARRAY=>2000, :T_HASH=>1000, :T_IMEMO=>1}
master_version with true
{:FREE=>-3001, :T_ARRAY=>2000, :T_HASH=>1000}
fast_version with false
{:FREE=>-1001, :T_ARRAY=>1000}
fast_version with true
{:FREE=>-3001, :T_ARRAY=>2000, :T_HASH=>1000}
Warming up --------------------------------------
master_version with false
104.985k i/100ms
master_version with true
118.737k i/100ms
fast_version with false
206.013k i/100ms
fast_version with true
107.005k i/100ms
Calculating -------------------------------------
master_version with false
1.970M (±24.6%) i/s - 8.924M in 5.010302s
master_version with true
2.152M (±12.4%) i/s - 10.686M in 5.051588s
fast_version with false
5.613M (±19.6%) i/s - 26.782M in 5.003740s
fast_version with true
2.027M (±15.8%) i/s - 9.951M in 5.065670s
Comparison:
fast_version with false: 5613159.2 i/s
master_version with true: 2152354.4 i/s - 2.61x slower
fast_version with true: 2027296.0 i/s - 2.77x slower
master_version with false: 1969824.9 i/s - 2.85x slower
```
Benchmark code:
```ruby
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 "benchmark-ips"
gem "rails"
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
def master_version(key)
Array({}.delete(:default)).compact
end
def fast_version(key)
if key
Array({}.delete(:default)).compact
else
[]
end
end
def test
puts "master_version with false"
puts allocate_count { 1000.times { master_version(false) } }
puts "master_version with true"
puts allocate_count { 1000.times { master_version(true) } }
puts "fast_version with false"
puts allocate_count { 1000.times { fast_version(false) } }
puts "fast_version with true"
puts allocate_count { 1000.times { fast_version(true) } }
Benchmark.ips do |x|
x.report("master_version with false") { master_version(false) }
x.report("master_version with true") { master_version(true) }
x.report("fast_version with false") { fast_version(false) }
x.report("fast_version with true") { fast_version(true) }
x.compare!
end
end
test
```
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Before:
```
$ ruby -v
ruby 2.6.0dev (2018-04-04 trunk 63085) [x86_64-linux]
$ bundle exec rake test:template
...
/rails/actionview/lib/action_view/digestor.rb:76: warning: passing splat keyword arguments as a single Hash to `find_all'
```
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Really just an excuse to trigger edge docs generation
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