Ruby » Ruby master

Feature #17311

Updated by S_H_ (Shun Hiraoka) about 4 years ago

Improve performance `Array#deconstruct` & `Array#to_ary` with Ruby code. 

 like this. 

 ```ruby 
 class Array 
   def deconstruct 
     return self 
   end 

   def to_ary 
     return self 
   end 
 end 
 ``` 

 benchmark: 

 ```yml 
 prelude: | 
   sary = Array.new(10) 
   mary = Array.new(1000) 
   lary = Array.new(30_000_000) 
 benchmark: 
   - sary.deconstruct 
   - mary.deconstruct 
   - lary.deconstruct 
   - sary.to_ary 
   - mary.to_ary 
   - lary.to_ary 
 loop_count: 20000000 


 ``` 

 benchmark result: 

 ```bash 
 sh@MyComputer:~/rubydev/build$ make benchmark/benchmark.yml -e COMPARE_RUBY=~/.rbenv/shims/ruby -e BENCH_RUBY=../install/bin/ruby 
 # Iteration per second (i/s) 

 |                    |compare-ruby|built-ruby| 
 |:-----------------|-----------:|---------:| 
 |sary.deconstruct    |       72.866M|     74.310M| 
 |                    |             -|       1.02x| 
 |mary.deconstruct    |       73.665M|     80.049M| 
 |                    |             -|       1.09x| 
 |lary.deconstruct    |       74.924M|     86.865M| 
 |                    |             -|       1.16x| 
 |sary.to_ary         |       70.203M|     81.387M| 
 |                    |             -|       1.16x| 
 |mary.to_ary         |       72.142M|     78.847M| 
 |                    |             -|       1.09x| 
 |lary.to_ary         |       70.473M|     86.382M| 
 |                    |             -|       1.23x| 
 ``` 

 COMPARE_RUBY is `ruby 3.0.0dev (2020-11-07T13:12:22Z master 5823f6c25b) [x86_64-linux]`. BENCH_RUBY is ahead of `ruby 3.0.0dev (2020-11-07T13:12:22Z master 5823f6c25b) [x86_64-linux]`. 

 Also expect to improve the performance of pattern matching using arrays. 

 PR: 
 https://github.com/ruby/ruby/pull/3744

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