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Feature #16261

Updated by zverok (Victor Shepelev) over 1 year ago

**UPD:** After discussion in comments, New method names changed to "splat"-based. 

 New methods proposal. 

 Prototype code: 
 ```ruby 
 module Enumerable 
   def each_splat each_tuple 
     return to_enum(__method__) unless block_given? 
     each_entry each { |item| yield(*item) } # unpacking possible array into several args 
   end 
 end 

 class Enumerator 
   def splat 
     return to_enum(:splat) unless block_given? 
     each_entry { |item| yield(*item) } 
   end 
 end 
 ``` 

 Supposed documentation/explanation: 

 > For enumerable with Array items, passes all items in the block provided as a separate arguments. t could be useful if the provided block has lambda semantics, e.g. doesn't unpack arguments automatically. For example: 

   ```ruby 
 files = ["README.md", "LICENSE.txt", "Contributing.md"] 
 content = [fetch_readme, fetch_license, fetch_contributing] # somehow make a content for the files 

 files.zip(content).each_splat(&File.:write) files.zip(content).each_tuple(&File.:write) # writes to each file its content 
 ``` 

 > When no block passed, returns enumerator of the tuples: 

   ```ruby 
 [1, 2, 3].zip([4, 5, 6]).each_splat.map(&:+) 6]).each_tuple.map(&:+) # => [5, 7, 9]  
 ```

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