From: americodls@... Date: 2017-05-24T01:06:23+00:00 Subject: [ruby-core:81363] [Ruby trunk Bug#13592] Enumerable#reduce with symbol does not respect method visibility Issue #13592 has been updated by americodls (Americo Duarte). This is exactly what I am saying. This behavior of `reduce` is unpredictable and different of the another `Enumerable` methods. Users will expect that symbol argument is converted in proc and then applied to object. `reduce` (since v1.8.7) is older than `public_send` (since 1.9.1), maybe this is the reason of the `reduce` works like that. But these days, as we have `public_send` and the `:symbol.to_proc` works similar to `public_send` I think make sense the `reduce` works with `:symbol.to_proc`, and not reaching private methods. Hanmac (Hans Mackowiak) wrote: > reduce(&:+) is different from > reduce(:+), this one has nothing to do with :+.to_proc > > reduce/inject with symbol param does call the method internally without checking if its private or not ---------------------------------------- Bug #13592: Enumerable#reduce with symbol does not respect method visibility https://bugs.ruby-lang.org/issues/13592#change-65059 * Author: americodls (Americo Duarte) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin15] * Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN ---------------------------------------- When use reduce with symbol, I expect the symbol is called in object but respecting the method visibility. Example with source code written in a file. ~~~ruby Fixnum.instance_eval do private :+ end p [1,2,3].reduce(:+) ~~~ The behavior in IRB is different. ~~~ irb(main):001:0> [1,2,3].reduce(:+) => 6 irb(main):002:0> Fixnum.instance_eval do irb(main):003:1* private :+ irb(main):004:1> end => Fixnum irb(main):005:0> /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/input-method.rb:154:in `gets': private method `+' called for 4:Fixnum (NoMethodError) ~~~ Now, I am confused. Those behaviors are expected? In doc this is not clear. -- https://bugs.ruby-lang.org/ Unsubscribe: