| Commit message (Collapse) | Author | Age | Files | Lines |
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options and original options have same keys
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Performance optimization: `yield` with an implicit `block` is faster than `block.call`.
See http://youtu.be/fGFM_UrSp70?t=10m35s and the following benchmark:
```ruby
require 'benchmark/ips'
def fast
yield
end
def slow(&block)
block.call
end
Benchmark.ips do |x|
x.report('fast') { fast{} }
x.report('slow') { slow{} }
end
# => fast 154095 i/100ms
# => slow 71454 i/100ms
# =>
# => fast 7511067.8 (±5.0%) i/s - 37445085 in 4.999660s
# => slow 1227576.9 (±6.8%) i/s - 6145044 in 5.028356s
```
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Hashes with indifferent access should support `reverse_merge` out-of-the-box
but they don't; for instance the following code fails:
```ruby
require 'active_support'
require 'active_support/hash_with_indifferent_access'
hash = HashWithIndifferentAccess.new key: :old_value
hash.reverse_merge key: :new_value
```
This PR fixes the case above by simply requiring
`active_support/core_ext/hash/reverse_merge` in `hash_with_indifferent_access.rb`
and adding a test that confirms the fix.
---
Here are more details about the bugfix.
Currently, `reverse_merge` is [defined in HashWithIndifferentAccess](https://github.com/rails/rails/blob/4e8ea13ba1a0870905a46fac5f232d9f41eef8a4/activesupport/lib/active_support/hash_with_indifferent_access.rb#L208)
by invoking `super`, that is by invoking `Hash#reverse_merge`:
```ruby
def reverse_merge(other_hash)
super(self.class.new_from_hash_copying_default(other_hash))
end
```
However, Ruby's `Hash` does not have the `reverse_merge` by default: it must be
added by ActiveSupport, and that requires the following line of code to be
present:
```ruby
require 'active_support/core_ext/hash/reverse_merge'
```
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to ensure correct parsing result of rdoc
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atomic_write rescue also Errno::EACCES
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atomic_write rescue also Errno::EACCES on changing file permission. It could be raised with some type of filesystem
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Change `gsub` to `tr` where possible
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Fix underscore inflector handling of namespaced and adjacent acronyms
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I suspect that positive lookbehind would have been used in the
original implementation had it been available in supported Ruby
versions at the time. Now that Rails requires Ruby 1.9.2 or above,
this is no longer an issue.
This fixes #14146 for acronyms such as APIRESTful. This technique also
addresses namespaced acronyms that are not entirely uppercased. This
was broken when the commit was originally written but has since been
fixed in ccbb481. The latter does not deal with adjacent acronyms so
this commit wins.
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Inspired by @tenderlove's work in
c363fff29f060e6a2effe1e4bb2c4dd4cd805d6e, this reduces the number of
strings allocated when running callbacks for ActiveRecord instances. I
measured that using this script:
```
require 'objspace'
require 'active_record'
require 'allocation_tracer'
ActiveRecord::Base.establish_connection adapter: "sqlite3",
database: ":memory:"
ActiveRecord::Base.connection.instance_eval do
create_table(:articles) { |t| t.string :name }
end
class Article < ActiveRecord::Base; end
a = Article.create name: "foo"
a = Article.find a.id
N = 10
result = ObjectSpace::AllocationTracer.trace do
N.times { Article.find a.id }
end
result.sort.each do |k,v|
p k => v
end
puts "total: #{result.values.map(&:first).inject(:+)}"
```
When I run this against master and this branch I get this output:
```
pete@balloon:~/projects/rails/activerecord$ git checkout master
M Gemfile
Switched to branch 'master'
pete@balloon:~/projects/rails/activerecord$ bundle exec ruby benchmark_allocation_with_callback_send.rb > allocations_before
pete@balloon:~/projects/rails/activerecord$ git checkout remove-dynamic-send-on-built-in-callbacks
M Gemfile
Switched to branch 'remove-dynamic-send-on-built-in-callbacks'
pete@balloon:~/projects/rails/activerecord$ bundle exec ruby benchmark_allocation_with_callback_send.rb > allocations_after
pete@balloon:~/projects/rails/activerecord$ diff allocations_before allocations_after
39d38
<
{["/home/pete/projects/rails/activesupport/lib/active_support/callbacks.rb",
81]=>[40, 0, 0, 0, 0, 0]}
42c41
< total: 630
---
> total: 590
```
In addition to this, there are two micro-optimizations present:
* Using `block.call if block` vs `yield if block_given?` when the block was being captured already.
```
pete@balloon:~/projects$ cat benchmark_block_call_vs_yield.rb
require 'benchmark/ips'
def block_capture_with_yield &block
yield if block_given?
end
def block_capture_with_call &block
block.call if block
end
def no_block_capture
yield if block_given?
end
Benchmark.ips do |b|
b.report("block_capture_with_yield") { block_capture_with_yield }
b.report("block_capture_with_call") { block_capture_with_call }
b.report("no_block_capture") { no_block_capture }
end
pete@balloon:~/projects$ ruby benchmark_block_call_vs_yield.rb
Calculating -------------------------------------
block_capture_with_yield
124979 i/100ms
block_capture_with_call
138340 i/100ms
no_block_capture 136827 i/100ms
-------------------------------------------------
block_capture_with_yield
5703108.9 (±2.4%) i/s - 28495212 in 4.999368s
block_capture_with_call
6840730.5 (±3.6%) i/s - 34169980 in 5.002649s
no_block_capture 5821141.4 (±2.8%) i/s - 29144151 in 5.010580s
```
* Defining and calling methods instead of using send.
```
pete@balloon:~/projects$ cat benchmark_method_call_vs_send.rb
require 'benchmark/ips'
class Foo
def tacos
nil
end
end
my_foo = Foo.new
Benchmark.ips do |b|
b.report('send') { my_foo.send('tacos') }
b.report('call') { my_foo.tacos }
end
pete@balloon:~/projects$ ruby benchmark_method_call_vs_send.rb
Calculating -------------------------------------
send 97736 i/100ms
call 151142 i/100ms
-------------------------------------------------
send 2683730.3 (±2.8%) i/s - 13487568 in 5.029763s
call 8005963.9 (±2.7%) i/s - 40052630 in 5.006604s
```
The result of this is making typical ActiveRecord operations slightly faster:
https://gist.github.com/phiggins/e46e51dcc7edb45b5f98
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Nothing biggie. Skimmed through `ActiveSupport::Concern` docs these days
and this one comment seemed a bit off.
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Fixes #16956.
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[ci skip] ActiveSupport CHANGELOG fixes
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1. spacing issues
2. spelling correction
3. grammar correction
4. Add missing docs
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Added method `#eql?` to `ActiveSupport::Duration`, in addition to `#==`.
Conflicts:
activesupport/CHANGELOG.md
activesupport/lib/active_support/duration.rb
activesupport/test/core_ext/duration_test.rb
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Currently, the following returns `false`, contrary to expectation:
1.minute.eql?(1.minute)
Adding method `#eql?` will make this behave like expected. Method `#eql?` is
just a bit stricter than `#==`, as it checks whether the argument is also a
uration. Their parts may be different though.
1.minute.eql?(60.seconds) # => true
1.minute.eql?(60) # => false
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Ruby 2.2 knows this, and no longer matches it with [[:space:]], so it's
not a good candidate for testing String#squish.
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Closes #16392.
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Otherwise this will lead to another error later on
when generating a signature:
TypeError (no implicit conversion of nil into String).
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Goals:
1. Default to :random for newly generated applications
2. Default to :sorted for existing applications with a warning
3. Only show the warning once
4. Only show the warning if the app actually uses AS::TestCase
Fixes #16769
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Fixes #8015, #9756.
[Fred Wu & Matthew Draper]
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https://github.com/rails/rails/commit/98b46bf5e201307cae56ee14bf41363a539779c5
did not properly handled out-of-range `:usec`s.
Passing a `:usec` that's out of range now throws an `ArgumentError` as it
should.
Fixes #16759.
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Fixes https://github.com/rails/rails/issues/9933.
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When we are loading a component and we want to know its version, we are
actually not speaking about the constant but the library itself.
[ci skip]
[Godfrey Chan & Xavier Noria]
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`try` allocates an array on every call, we should avoid calling it in
hotspots. This reduced AttributeMethodsTest#test_setting_time_zone_aware_attribute_with_string
from 18k allocations to 14k
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just needed some tenderloving instance_eval to fit the bill
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For the sake of backward-compatibility, we need to make #instance_of?
return true for Fixnum. On the other hand, the method should still
give true for ActiveSupport::Duration itself which was not the case
before.
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Define the Duration#instance_of? method
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Since Duration is extending from ProxyObject which extends itself from
BasicObject, the Duration object doesn't respond to the #instance_of?
method. Thus, the #method_missing hook get triggered, delegating the
method to its `value` attribute.
However, Rubinius' #eql? definition relies on #instance_of?, thus this
will equal to true with a Fixnum (since its `value` attribute is a
Fixnum) while it should not.
The previous behavior was wrong anyway, no matter the implementation.
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Zero has one digit, but Math.log10(0) returns -Infinity. The method
needs to special-case zero.
The patch adds a regression test that is not clearly related to the
underlying issue because digit_count is private and has no coverage.
Gray area.
This bug was uncovered by 60062cf.
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Also moved comment for removal above `unless()` to not confuse RDoc with
the documentation for this method.
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