Make a intro to DrRacket video

[spdegabrielle]

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

[spdegabrielle]

This is distinct from to #137