Issue #18959 has been updated by Earlopain (Earlopain _). Status changed from Open to Closed I believe this can be closed now that https://bugs.ruby-lang.org/issues/20064 was implemented ---------------------------------------- Feature #18959: Handle gracefully nil kwargs eg. **nil https://bugs.ruby-lang.org/issues/18959#change-117354 * Author: LevLukomskyi (Lev Lukomskyi) * Status: Closed ---------------------------------------- The issue: ```ruby def qwe(a: 1) end qwe(**nil) #=> fails with `no implicit conversion of nil into Hash (TypeError)` error { a:1, **nil } #=> fails with `no implicit conversion of nil into Hash (TypeError)` error ``` Reasoning: I found myself that I often want to insert a key/value to hash if a certain condition is met, and it's very convenient to do this inside hash syntax, eg.: ```ruby { some: 'value', **({ id: id } if id.present?), } ``` Such syntax is much more readable than: ```ruby h = { some: 'value' } h[:id] = id if id.present? h ``` Yes, it's possible to write like this: ```ruby { some: 'value', **(id.present? ? { id: id } : {}), } ``` but it adds unnecessary boilerplate noise. I enjoy writing something like this in ruby on rails: ```ruby content_tag :div, class: [*('is-hero' if hero), *('is-search-page' if search_page)].presence ``` If no conditions are met then the array is empty, then converted to nil by `presence`, and `class` attribute is not rendered if it's nil. It's short and so convenient! There should be a similar way for hashes! I found this issue here: https://bugs.ruby-lang.org/issues/8507 where "consistency" thing is discussed. While consistency is the right thing to do, I think the main point here is to have fun with programming, and being able to write stuff in a concise and readable way. Please, add this small feature to the language, that'd be so wonderful! 🙏 -- https://bugs.ruby-lang.org/