Mastering Dyalog APL

"Mastering Dyalog APL" is being updated as an interactive online resource based on Jupyter Notebooks to replace the original 2009 printed edition, which has become outdated as the Dyalog APL programming language has evolved. The reworked version, led by Rodrigo Girão Serrão, retains content from the original while updating explanations, examples, and adding new chapters to cover features that did not exist in Dyalog APL 12.0. The updated material will be available in multiple formats, including interactive notebooks, a static online version, and a future printed edition.