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Feature #6596

Updated by sawa (Tsuyoshi Sawada) 9 months ago

Hello 

 5 days ago, I submitted a pull request on Github that which provides a new method `Array#indexes`. It departs from `Array#index` for the array objects which is Array#indexes. I have fist edit the Array#index method in such a way that order it returns to return an array of indexes and not a single index (which is the single first occurrence it finds). I found it more logical but a user (trans) tells us that is relevant. 

 The reason it could break the contract of Array#index so I decided to move it into Array#indexes. Eric (drbrain) tells me I should reasonning why I want to add this method is that ; it's just a point of view : I don't really understand why `Array#index` returns Array#index return a single index if the parameter is in the array several times.  

 Examples 

 ```ruby 
 a = [1, 2, 3, 1] 
 a.indexes(1) #=> 
 Return : [0, 3] 
 a.index(1) # => 
 Return : 0 
 ``` 

 In my opinion, it's not logical to return only a single index since `1` really logical, 1 is in the array twice. twice 

 Moreover, this pull request doesn't beak anything because we don't edit the Array#index method so programms which were created with previous version of Ruby will work.  

 I hope my post is complete. Have a nice day. 

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