[#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:107694] [Ruby master Feature#18595] Alias `String#-@` as `String#dedup`
From:
"danh337 (Dan H)" <noreply@...>
Date:
2022-02-21 19:32:12 UTC
List:
ruby-core #107694
Issue #18595 has been updated by danh337 (Dan H). That original ticket #16295 was about both `.@+` and `.@-` methods. You're addressing `.@-` here which is great. I see what you mean about the difference from `.freeze`, however subtle. If there's something really more valuable in a `.dedup` method than in `.freeze`, then why couldn't `.freeze` do that more valuable thing? The `.@+` is still not resolved, even though #16295 is closed. If the *behavior* of `.+@` and `.dup` is the same, that's fine and I get your point, but `x = "".dup` is semantically weird. I realize that `x = +""` is probably what most would use anyway, but for method chains that mutate a String, where I *know* the String is expected to mutate, a "fast" inverse of `.freeze` would be nice instead of always `.dup`. If a String is already mutable, we do not want to duplicate it. ---------------------------------------- Feature #18595: Alias `String#-@` as `String#dedup` https://bugs.ruby-lang.org/issues/18595#change-96612 * 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>