Ruby Advent Calendar 2019】ピュア Ruby で Ruby 2.7 の Numbered parameter を実装してみよう!【1日目】 - Secret Garden(Instrumental)
ruby 2.7 emits warnings about terraform-landscape variable names · Issue #111 · coinbase/terraform-landscape · GitHub
Ruby 2.7.0 uses "_1", "_2", "_3" as "numbered parameters" · Issue #145 · mime-types/ruby-mime-types · GitHub
![What's new in RubyMine 2019.3: better code insight and RuboCop support, improvements for Git, HTTP client, and more! What's new in RubyMine 2019.3: better code insight and RuboCop support, improvements for Git, HTTP client, and more!](https://jetbrains.com.xy2401.com/ruby/whatsnew/screenshots/2019.2/numbered_parameters-670@2x.png)