mirror of https://github.com/rails/rails
4bded3c00a
For example:
```ruby
delegate :negative?, to: :value, as: Numeric
```
Before:
```
def negative?(&block)
_ = @value
_.negative?(&block)
rescue NoMethodError => e
if _.nil? && e.name == :negative?
raise DelegationError, "ActiveSupport::Duration#negative? delegated to @value.negative?, but @value is nil: #{self.inspect}"
else
raise
end
end
```
After:
```ruby
def negative?(&block)
_ = @value
_.negative?(&block)
rescue NoMethodError => e
if _.nil? && e.name == :negative?
raise DelegationError.nil_target(:negative?, :"@value")
else
raise
end
end
```
Before almost every delegator would generate a large unique string that gets interned for
the error message that is rarely if ever used.
Rather than to "hardcode" a unique string, we now only pass pre-existing symbols to
a method helper that will build the error message.
This alone saves about 160B per delegator, and the method bytecode is also marginally
smaller (but it's harder to assess how much this actually saves)
|
||
|---|---|---|
| .. | ||
| bin | ||
| lib | ||
| test | ||
| .gitignore | ||
| CHANGELOG.md | ||
| MIT-LICENSE | ||
| README.rdoc | ||
| Rakefile | ||
| activesupport.gemspec | ||
README.rdoc
= Active Support -- Utility classes and Ruby extensions from \Rails
Active Support is a collection of utility classes and standard library
extensions that were found useful for the \Rails framework. These additions
reside in this package so they can be loaded as needed in Ruby projects
outside of \Rails.
You can read more about the extensions in the {Active Support Core Extensions}[https://guides.rubyonrails.org/active_support_core_extensions.html] guide.
== Download and installation
The latest version of Active Support can be installed with RubyGems:
$ gem install activesupport
Source code can be downloaded as part of the \Rails project on GitHub:
* https://github.com/rails/rails/tree/main/activesupport
== License
Active Support is released under the MIT license:
* https://opensource.org/licenses/MIT
== Support
API documentation is at:
* https://api.rubyonrails.org
Bug reports for the Ruby on \Rails project can be filed here:
* https://github.com/rails/rails/issues
Feature requests should be discussed on the rails-core mailing list here:
* https://discuss.rubyonrails.org/c/rubyonrails-core