Code reference information
Definitions
In AppCode, you can see where and how symbols, such as classes, fields, methods, or functions are defined in your project. For this purpose, the IDE features the Quick Definition popup.
To view definition of a symbol, select it in the editor and press ⌃ ⇧ I (or click ).
Alternatively, with the Ctrl key pressed, hover the cursor over any symbol. AppCode displays the symbol as a link and shows its definition in a tooltip. Click this link to jump to the definition of the symbol.
You can open a definition in the Find tool window. To do so, click the 
icon in the top-right corner of the popup and click 
Open in Find Tool Window.
To open the source code of the definition for editing and close the popup, click the icon and then click 
Edit Source (F4).
Type definitions
The Quick Type Definition feature allows you to view the type definition of variables, fields, methods, or any other symbols in a popup without switching from the code you're editing.
Place the caret at the symbol for which you want to view the type definition and select .
To open the source code of the definition for editing and close the popup, click the
icon and then click Edit Source (F4).
AppCode doesn't have a default keyboard shortcut for this action, but you can manually configure it in the settings. For more information on how to configure custom shortcuts, refer to Configure keyboard shortcuts.
Parameter info
The Parameter Info popup shows the names of parameters in method and function calls. AppCode automatically shows a popup with all available method signatures within 1 second (1000 milliseconds) after you type an opening bracket in the editor, or select a method from the suggestions list.
You can explicitly invoke the popup if it has closed or if your IDE is configured not to show the popup automatically. To do so, press ⌃ P (or click ).
Show full method or function signatures
By default, the parameter info popup shows simple signatures. You can configure the IDE to show full signatures that include method names and returned types.
In the Preferences dialog ⌃ ⌥ S, go to , and select the Show full method signatures checkbox.
Configure the parameter info popup
In the Preferences dialog ⌃ ⌥ S, go to .
In the Show the parameter info popup in ... milliseconds field, specify the time in milliseconds after which the popup should appear.
If you don't want the popup to appear automatically, clear the Show the parameter info popup in ... milliseconds checkbox.
Quick documentation
You can get quick information for any symbol or method signature by means of the Quick Documentation popup. Note that the symbol must be supplied with documentation comments created in accordance with the supported markup or with the SDK documentation.
View quick documentation
Hover the mouse over the necessary symbol to view its documentation, or place the caret at the symbol, and press ⌃ Q ().
Press ⌃ Q again to switch between the popup and the toolbar.
Click in the popup to change the font size, display the quick documentation toolbar, or go to the source code.
Disable quick documentation on hover
In the Preferences dialog ⌃ ⌥ S, go to and clear the Show quick documentation on hover checkbox.
You can also click
in the popup and disable the Show on Mouse Move option.
In this case, to view documentation for a symbol at caret, press ⌃ Q or select from the main menu.
External documentation
External documentation opens the necessary information in a web browser so that you can navigate to related symbols and keep the information for further reference at the same time. The External Documentation action opens Apple Developer Documentation for a selected symbol in a web or offline browser of your choice.
View external documentation
To open documentation for a symbol at the caret in an external browser, do one of the following:
Press ⇧ F1.
Select from the main menu.
Click the link in the Quick Documentation ⌃ Q popup:
Select an external documentation browser
To choose where external documentation will be opened:
In the Preferences dialog ⌃ ⌥ S, go to .
Choose one of the following options:
Default Web Browser (default): your default web browser.
Dash: the Dash browser for offline API documentation (if it is installed on your computer).
Xcode Documentation: the offline Xcode documentation viewer.
Context info
If the current method or class declaration is not visible, you can view it in the tooltip that appears in the top-left corner of the editor. To do this, press ⌥ Q or select View | Context Info from the main menu.
