[#107430] [Ruby master Feature#18566] Merge `io-wait` gem into core IO — "byroot (Jean Boussier)" <noreply@...>
Issue #18566 has been reported by byroot (Jean Boussier).
22 messages
2022/02/02
[ruby-core:107701] [Ruby master Feature#18595] Alias `String#-@` as `String#dedup`
From:
"byroot (Jean Boussier)" <noreply@...>
Date:
2022-02-21 22:01:15 UTC
List:
ruby-core #107701
Issue #18595 has been updated by byroot (Jean Boussier). > Because the first 2 constants actually create 2 objects instead of the single equivalent interned object. Well, that's why I suggested not to use literals, because in your example the first two constants will point to the same object because `.freeze` has specific support in the parser (it's equivalent to enabling `frozen_string_literal`) So yes `"string_literal".freeze` does intern, but `"foo".upcase.freeze` doesn't. > should use .freeze when: (a) we want it to run faster, and (b) we don't care about possible extra memory usage. Pretty much yes. I'd add: (c) when we know the string is most likely unique. ---------------------------------------- Feature #18595: Alias `String#-@` as `String#dedup` https://bugs.ruby-lang.org/issues/18595#change-96618 * Author: byroot (Jean Boussier) * Status: Open * Priority: Normal ---------------------------------------- This is a rescoped feature request for https://bugs.ruby-lang.org/issues/16295 ### Rationale [Unary operator have some precedence oddities](https://bugs.ruby-lang.org/issues/16150#note-39) (@headius) This often force to use parentheses, which is awkward and breaks the chaining flow. It's really not obvious what it does. I submitted many pull requests to various open source projects to reduce their memory footprint, and I am constantly asked what it does and I have to point to the `String#-@` documentation. [The last example was 3 days ago](https://github.com/dry-rb/dry-schema/pull/399#issuecomment-1043963073). I believe that `String#dedup` would help users discover this feature, and in projects where 3.2 is the oldest supported version, it would allow for much clearer code. ### Proposal It's all in the title: Alias `String#-@` as `String#dedup`. Or maybe even rename `String#-@` as `String#dedup`, and make `String#-@` the alias? -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:[email protected]?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>