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156 156
157Experimental feature that, given code highlighting using rust-analyzer is 157Experimental feature that, given code highlighting using rust-analyzer is
158active, will pick unique colors for identifiers. 158active, will pick unique colors for identifiers.
159
160### Code hints
161
162Rust Analyzer has two types of hints to show the information about the code:
163
164* hover hints, appearing on hover on any element.
165
166Contains extended information on the language item hovered.
167
168* inlay hints, shown near the element hinted directly in the editor.
169
170Two types of inlay hints are displayed currently:
171
172* type hints, displaying the minimal information on the type of the expression (if the information is available)
173* parameter name hints, displaying the names of the parameters in the corresponding methods
174
175#### VS Code
176
177In VS Code, the following settings can be used to configure the inlay hints:
178
179* rust-analyzer.displayInlayHints — toggles inlay hints display on or off
180* rust-analyzer.maxInlayHintLength — shortens the hints if their length exceed the value specified. If no value is specified (`null`), no shorteninng is applied.
181
182**Note:** VS Code does not have a native support for inlay hints [yet](https://github.com/microsoft/vscode/issues/16221) and the hints are implemented using decorations.
183This approach has limitations: the caret movement near the end of the hint may look [weird](https://github.com/rust-analyzer/rust-analyzer/issues/1623).