jank is a general-purpose programming language that combines the interactive, value-oriented features of Clojure with the performance of native compilation through C++ and LLVM. It allows seamless integration of Clojure and C++ code, supports REPL-based development, and offers powerful data manipulation capabilities while emphasizing immutability and functional programming principles. jank is currently in heavy development and aims to provide a robust toolset for developers familiar with Clojure.

The article discusses the use of the hashp macro in Clojure for improved debugging, allowing for a more concise way to print variable values without adding extra parentheses. It explores the limitations of using hashp within threading macros and presents a solution to create a universal macro that can work with both thread-first and thread-last constructs. The enhanced functionality allows developers to debug more effectively while maintaining clean code.