Make a intro to DrRacket video #140
Description
Make a intro to DrRacket video
In the style of the 'take the tour' link (<1000 words <6 minutes) on IntelliJ page
Proposed script;
Racket comes with a powerful IDE to support developers.
DrRacket uses the language defined in the source to provide language specific tooling
[switch between Racket and Datalog showing renaming identifiers, autocomplete, arrows ]
[back to standard racket]
DrRacket automatically indents code as you type
You can manually reindent a line by pressing [tab], selection, or the entire file [command]-i
[demonstrate]
You can use [ctrl]-. to activate autocomplete
[show autocomplete]
As you type the region between matching parenthesis is shaded gray.
[show]
And opening and closing parenthesis are automatically changed to match
[show cond with closing square brackets]
There are a range of keybindings to efficiently navigate s-expressions, going forwards, backwards, descending or ascending, holding shift allows you to select as you move.
[demonstrate forward, back, down, up, the select -...]
Moving the mouse pointer will indicate identifier binding and usage with arrows, which can be pinned to aid navigation.
[demo]
Keyboard shortcuts or context menus provide navigation back to an identifiers binding location or forward to each use of the identifier,
[demo]
and all instances of an identifier can be renamed to aid refactoring.
[demo renaming]
The [(define ...)] button shows all definitions, clicking a definition name will move the cursor to that definition.
[demo]
Using [run] or [ctrl]-r will run the currently selected file
[demo]
The interactions panel will reset and show if debugging or profiling is enabled, and display any output as it happens.
[demo]
While the interactions panel is reset to ensure it is consistent with the program, [esc]-p can be used to review and reuse previous commands.
[demo]
The Break button allows the user to interrupt evaluation; one click will request, two clicks to kill the evaluation immediately.
[demo]
The Debug button launches the stepping debugger
[demo stepping debugger]
Sophisticated program analysis highlights identifiers and provides links to each identifiers definition and use.
This functionality also enables signatures, and links directly to the relevant documentation.
[demo]
The Macro Stepper is a stepper for macro expansion, letting you inspect macro expansion as it happens.
[demo of macro expansion while stepping]
While this recording has only provided a brief overview of the functionality available, DrRacket also has sophisticated extension mechanisms including, user defined keybindings, scripts, teachpacks, and plugins.
See the links below to learn more.
Thank you