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2021.3
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  3. Type hints

Type hints

Last modified: 21 January 2022

Settings / Preferences | Editor | Inlay Hints | C/C++/Objective-C

Default state: enabled

Clangd-based engine

To increase code readability, CLion provides type hints in the editor inlined with your code. For example, type hints are shown for deduced types:

Type hints for deduced types

Also, the hints are present for auto variables and structured bindings:

Type hints for auto variables and structured bindings

Another example is lambda return types:

Type hints for lambda return types

Watch this video to learn more about parameter hints and type hints:

Toggle type hints

Type hints are enabled by default. To hide them, use one of the following options:

  • Go to Settings/Preferences | Editor | Inlay Hints | C/C++ and clear the Show type hints checkbox to hide all the type hints or a particular checkbox to hide only some of them.

    Type hints settings

    note

    Hints for Obvious types are disabled by default to reduce clutter.

  • In the editor, right-click a hint and select the option from the context menu:

    Hints context menu

tip

Click on a type inside a hint with Ctrl/Command pressed to navigate to the type declaration.