From: kimmo.lehto@... Date: 2019-08-09T07:36:18+00:00 Subject: [ruby-core:94215] [Ruby master Bug#16086] OpenStruct method access with a block does not raise Issue #16086 has been updated by kke (Kimmo Lehto). > That is OpenStruct, undefined key does not raise an exception. > And unused block is silently ignored in common. Right, this behavior seems to be universal: ``` > { foo: :bar }[:foo] { 'hello' } => :bar > 1.abs { 'hello' } => 1 ``` > I haven't seen such behavior. > ``` > $ ruby -rostruct -e 'p OpenStruct.new(hello: "world").hello { |k| puts k.upcase }' > "world" > ``` Hmm, I can't replicate it anymore either. I must have been experimenting with `each_pair`. I guess nothing in this issue is actually an issue and it can be closed. This came from frustration when I assumed there was an `each` method and all I got was `nil` and couldn't figure out why. ---------------------------------------- Bug #16086: OpenStruct method access with a block does not raise https://bugs.ruby-lang.org/issues/16086#change-80513 * Author: kke (Kimmo Lehto) * Status: Feedback * Priority: Normal * Assignee: * Target version: * ruby -v: * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- This can cause confusion. ```ruby > OpenStruct.new(hello: 'world').each { |k, v| puts k.upcase } # there's no "each" method => nil > OpenStruct.new(hello: 'world').eahc_pair { |k, v| puts k.upcase } # each_pair typo => nil ``` An undefined key with a block should maybe raise `NoMethodError` or `ArgumentError`? A defined key with a block seems to yield the value, I don't see this being documented: ```ruby > OpenStruct.new(hello: 'world').hello { |k| puts k.upcase } HELLO ``` Maybe it should raise `ArgumentError` too? Related: https://bugs.ruby-lang.org/issues/15515 -- https://bugs.ruby-lang.org/ Unsubscribe: