mirror of
https://github.com/ruby/ruby.git
synced 2026-01-26 12:14:51 +00:00
16adb9303f
Creating state classes is pretty expensive.
Since they are not modifiable, we can reuse them instead.
Benchmark script:
```rb
require "ripper"
require "prism"
require "benchmark/ips"
codes = Dir["**/*.rb"].map { File.read(it) }
Benchmark.ips do |x|
x.config(time: 10)
x.report("prism") { codes.each { Prism::Translation::Ripper.lex(it) } }
x.report("ripper") { codes.each { Ripper.lex(it) } }
x.compare!
end
```
Before:
```
ruby 4.0.0 (2025-12-25 revision https://github.com/ruby/prism/commit/553f1675f3) +PRISM [x86_64-linux]
Warming up --------------------------------------
prism 1.000 i/100ms
ripper 1.000 i/100ms
Calculating -------------------------------------
prism 0.293 (± 0.0%) i/s (3.42 s/i) - 3.000 in 10.248348s
ripper 0.633 (± 0.0%) i/s (1.58 s/i) - 7.000 in 11.055687s
Comparison:
ripper: 0.6 i/s
prism: 0.3 i/s - 2.16x slower
```
After
```
ruby 4.0.0 (2025-12-25 revision https://github.com/ruby/prism/commit/553f1675f3) +PRISM [x86_64-linux]
Warming up --------------------------------------
prism 1.000 i/100ms
ripper 1.000 i/100ms
Calculating -------------------------------------
prism 0.486 (± 0.0%) i/s (2.06 s/i) - 5.000 in 10.280413s
ripper 0.635 (± 0.0%) i/s (1.58 s/i) - 7.000 in 11.027169s
Comparison:
ripper: 0.6 i/s
prism: 0.5 i/s - 1.31x slower
```
https://github.com/ruby/prism/commit/bdde16554c
What is Ruby?
Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.
Features of Ruby
- Simple Syntax
- Normal Object-oriented Features (e.g. class, method calls)
- Advanced Object-oriented Features (e.g. mix-in, singleton-method)
- Operator Overloading
- Exception Handling
- Iterators and Closures
- Garbage Collection
- Dynamic Loading of Object Files (on some architectures)
- Highly Portable (works on many Unix-like/POSIX compatible platforms as well as Windows, macOS, etc.) cf. https://docs.ruby-lang.org/en/master/maintainers_md.html#label-Platform+Maintainers
How to get Ruby
For a complete list of ways to install Ruby, including using third-party tools like rvm, see:
https://www.ruby-lang.org/en/downloads/
You can download release packages and the snapshot of the repository. If you want to download whole versions of Ruby, please visit https://www.ruby-lang.org/en/downloads/releases/.
Download with Git
The mirror of the Ruby source tree can be checked out with the following command:
$ git clone https://github.com/ruby/ruby.git
There are some other branches under development. Try the following command to see the list of branches:
$ git ls-remote https://github.com/ruby/ruby.git
You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer.
How to build
See Building Ruby
Ruby home page
Documentation
Mailing list
There is a mailing list to discuss Ruby. To subscribe to this list, please send the following phrase:
join
in the mail subject (not body) to the address ruby-talk-request@ml.ruby-lang.org.
Copying
See the file COPYING.
Feedback
Questions about the Ruby language can be asked on the Ruby-Talk mailing list or on websites like https://stackoverflow.com.
Bugs should be reported at https://bugs.ruby-lang.org. Read "Reporting Issues" for more information.
Contributing
See "Contributing to Ruby", which includes setup and build instructions.
The Author
Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.