Rubymine rbs12/17/2023 ![]() ![]() RubyMine uses RBS signatures to determine the types of Ruby elements and to provide more relevant code completion. When RubyMine utilizes on RBS it will only suggest renaming relevant entities, instead of showing all potential options: The Rename refactoring becomes more precise for code that has corresponding. On the other hand, Type Info always works when RubyMine utilizes the types specified in RBS files. Without RBS, RubyMine uses its own type inference to show the type, but in some cases Ruby code does not contain enough information to do that. To identify the type of an expression, you can use the Type Info action ( ⌃⇧P / Ctrl+Shift+P). There are several ways to do that, like using the ⌃⌘↑ ( Ctrl+Alt+Home) shortcut. To better understand the structure of an unfamiliar Ruby program, you can jump between corresponding Ruby and RBS files. This happens because the IDE can determine exactly how project entities relate to each other instead of showing all potential usages: However, when RubyMine can rely on RBS declarations, the results are much more precise. RubyMine can find potential declarations and usages even without RBS. Go to declaration and Find usages can help a lot with navigating large code bases, especially those that are new to you. In such cases, RubyMine will show an error if you try to invoke a method without first checking for nil: There’s also a new inspection for optional types specified in RBS. It will show a type error if there’s a mismatch between the RBS and Ruby code, like in method parameters or return values. RubyMine performs real-time type checking based on the information stored in. The following article shows the benefits of investing some of your time into adding RBS declarations to your project.
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