Issue #7657 has been updated by ko1 (Koichi Sasada).

Target version set to next minor


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Feature #7657: Array#& doesn't accept Enumerables
https://bugs.ruby-lang.org/issues/7657#change-35605

Author: Nevir (Ian MacLeod)
Status: Open
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: 
Target version: next minor


This seems similar to http://bugs.ruby-lang.org/issues/6923

Example:

    irb(main):001:0> class Thing
    irb(main):002:1>   include Enumerable
    irb(main):003:1>   def each(*args, &block)
    irb(main):004:2>     [1,2,3,4,5].each(*args, &block)
    irb(main):005:2>   end
    irb(main):006:1> end
    => nil
    
    irb(main):007:0> Array(Thing.new) & [1,3,5]
    => [1, 3, 5]
    irb(main):008:0> [1,3,5] & Thing.new
    TypeError: can't convert Thing into Array
    
    irb(main):009:0> Thing.class_eval do
    irb(main):010:1*   alias_method :to_ary, :to_a
    irb(main):011:1> end
    => Thing
    
    irb(main):012:0> [1,3,5] & Thing.new
    => [1, 3, 5]

Would it make sense for Enumerable to implement to_ary as well?  Or is this purely a bug in Array#&?


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