Tcl Tutorial: From Basics to Reusable Libraries

This comprehensive Tcl tutorial covers everything from basic text output, variable assignment, and arithmetic operations to advanced topics like regular expressions, associative arrays, file access, subprocess invocation, and building reusable libraries. It progressively introduces core concepts such as loops, control flow, and data structures (lists, arrays, dictionaries), while also delving into practical skills like string manipulation, pattern matching, and debugging techniques. Whether you're a beginner or an experienced programmer, this tutorial provides a valuable resource for quickly mastering Tcl and building reusable libraries.