CamelHumps is a feature that identifies parts of compound names composed according to CamelCase, where each part starts with a capital letter, or when parts of a compound name are separated by underscores. You can type only initial letters of these parts, and JetBrains Rider will find items with matching names automatically.
CamelHumps in search commands
CamelHumps always works in all Navigation by Name commands, namely Search Everywhere, Go To File, Go to File Member, and Go to Symbol. It is very convenient to type initial letters of name parts and get the list of matching items: You can type either uppercase or lowercase letters:
CamelHumps in editor assistance actions
CamelHumps can also work for Extend/Shrink Selection and other typing assistance commands:
Caret Move (Ctrl+Right/Ctrl+Left)
Caret Move with Selection (Ctrl+Shift+Right/Ctrl+Shift+Left)
Select Word at Caret (Ctrl+Alt+Right)
Delete to Word Start/End (Ctrl+Backspace and Ctrl+Delete respectively)
Double-clicking (if Honor "CamelHumps" word settings when selecting using double click is enabled on the settings page).
To enable CamelHumps in typing assistance actions
Press Ctrl+Alt+S, or alternatively from the main menu, chooseon Windows and Linux or on macOS.
Go to thepage of JetBrains Rider settings.
With the Use CamelHumps check box, toggle CamelHumps support in typing assistance features.
Click Save to apply the modifications and let JetBrains Rider choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see layer-based settings. Click Save.
If the CamelHumps is enabled, the Extend/Shrink Selection commands take into account parts of compound names. Suppose you have placed the caret in the middle of a compound name with several parts that begin with uppercase letters: With CamelHumps, pressing Ctrl+Alt+Right for the first time selects the current part of the word: Only after pressing this keystroke for the second time JetBrains Rider selects the whole word: All subsequent presses are processed as usual.
JetBrains Rider also provides similar actions that work in a mode opposite to the one selected in the Use CamelHumps setting:
- Move Caret to Previous Word in Different "CamelHumps" mode
- Move Caret to Previous Word with Selection in Different "CamelHumps" mode
- Move Caret to Next Word in Different "CamelHumps" mode
- Move Caret to Next Word with Selection in Different "CamelHumps" mode
- Delete to Word End in Different "CamelHumps" mode
- Delete to Word Start in Different "CamelHumps" mode
For example, If Use CamelHumps is enabled, the action Move Caret to Next Word in Different "CamelHumps" mode moves the caret to the end of word regardless of uppercase characters in this word; if Use CamelHumps is disabled, then the caret moves to the next CamelHump within this word.
You can bind them with the shortcuts of your choice as described in the section Configuring keyboard shortcuts.
CamelHumps in code completion
By default, CamelHumps support is also enabled for Code Completion features. I.e., you can start typing a CamelCase abbreviation of a symbol (also in lowercase) and the completion pop-up will display matched items. If necessary, you can configure this behavior.
To change the way code completion filtering works with CamelHumps
Press Ctrl+Alt+S, or alternatively from the main menu, chooseon Windows and Linux or on macOS, then choose on the left.
Select the Match case checkbox. If First letter only is chosen, you will need to type the first letter of a CamelCased identifier in the upper case, and then you can type middle letters that you want to match in the upper or lower case. If All letters is chosen, you will need to type all dividing letters of a CamelCased identifier in the upper case to match it.