Posts tagged racket


:: racket

… in which we attempt to recreate a game from the nineties using the Racket graphical facilities and we manage to do it in less than 1000 lines of code.

Markdown View using the Racket editor%

:: racket

The Racket text% editor class can be used to display multi line text with formatting, such as fonts and colors; it is however, somewhat difficult to set it up and use its formatting capabilities. This blog post shows how to build a text view which allows inserting markdown text and the result will be formatted, with headers, links and images.

Dependency Management in Racket Applications

:: racket

.. in which we look at how to manage the versions of packages used by a Racket application, and ensure that the correct package versions are used when building the application.

A Game of Tetris (user interface)

:: racket

The previous blog post introduced the Tetris game mechanics and made the game playable. In this blog post we’ll look at how to build an actual GUI application around the game mechanics: we’ll keep score, increase difficulty, peek at the next block and more. As we do that, we’ll explore some more interesting things you can do with the Racket pict library, and look at some of the GUI facilities available in Racket.

A Game of Tetris (gameplay)

:: racket

.. in which we implement a Tetris game step-by-step in Racket, exploring pict graphics, contracts and unit tests.

Dual Axis Plots

:: racket, data visualization

… in which we explore how to show on the same plot two data series that have different data ranges. The Racket Plot package does not support this functionality directly, but with the help of some data transformation, we can still achieve good results.

Custom Rackunit Test Runner

:: racket

As the number of tests for a program continues to increase, it is no longer sufficient to know that all tests passed or which test failed. Other questions start to become important: were some tests inadvertently disabled? which tests were skipped? how did the duration of a test evolve over several versions of a program? Existing build platforms, such as Azure Devops, can help with test management, but in order make use of their features, we need to extend the Racket unit test library to report the test results to the build pipeline.

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