Tcl
Tcl (Tool Command Language) is a dynamic, interpreted scripting language designed for easy embedding into applications, extensibility, and rapid prototyping, historically paired with the Tk GUI toolkit to build cross-platform graphical interfaces.
22 resources across 2 libraries
Glossary Terms(1)
Study Notes(21)
Arrays and Dictionaries in Tcl
Understand Tcl's associative arrays and the modern dict command, and learn when to reach for each key-value structure.
Conditionals in Tcl
Learn how Tcl evaluates branching logic with if/elseif/else, the expr command, comparison operators, and the switch command for multi-way branching.
File I/O in Tcl
Reading, writing, and managing files and channels in Tcl using open, read, gets, puts, and the channel configuration commands.
Installing Tcl and Running Scripts
How to install Tcl/Tk on Linux, macOS, and Windows, verify the installation, and run scripts using tclsh and wish.
Loops in Tcl
Master Tcl's while, for, and foreach loops, along with break and continue for controlling repeated execution.
Namespaces in Tcl
How Tcl's namespace command organizes procedures and variables into separate scopes to avoid naming collisions in larger programs.
Packaging Tcl Applications
Learn how to structure, package, and distribute Tcl/Tk applications using Tcl Modules, starkits/starpacks, and standalone executables.
Procedures in Tcl
Learn how to define reusable commands with proc, including default arguments, variable-arity args, return values, scope, and recursion.
Regular Expressions in Tcl
How to match, extract, and rewrite text patterns in Tcl using the regexp and regsub commands and Tcl's Advanced Regular Expression syntax.
String Manipulation in Tcl
Explore Tcl's string command ensemble for measuring, searching, matching, formatting, and building strings.
Tcl and C Extension Basics
Understand how to extend Tcl with compiled C code — writing custom commands, managing the Tcl_Obj type system, and building a loadable extension.
Tcl Best Practices
Practical conventions — namespacing, structured error handling, and safe command construction — that keep Tcl scripts maintainable as they grow.
Tcl Data Types and Lists
How Tcl's 'everything is a string' model supports lists, arrays, and dictionaries, and the core commands for building and manipulating them.
Tcl for EDA and Scripting Tools
Understand why Tcl became the standard scripting glue for EDA tools like Synopsys and Cadence, and how to write scripts that drive simulation, synthesis, and p…
Tcl Interview Questions
The recurring themes behind Tcl interview questions — substitution rules, list/array/dict tradeoffs, and Tk event-loop responsiveness — and how to answer them…
Tcl Object-Orientation with TclOO
How to define classes, objects, methods, and inheritance in Tcl using the built-in TclOO framework (oo::class, oo::define, oo::copy).
Tcl Quick Reference
A fast-lookup cheat sheet covering core Tcl syntax, list/string commands, and the essential Tk widget and geometry commands.
Tcl Syntax and Variables
How Tcl's command-word syntax, substitution rules ($, [], {}), and the `set` command work together to define and use variables.
Tcl/Tk vs Python Tkinter
How Tcl's native Tk toolkit compares to Python's tkinter binding, and why both ultimately drive the exact same widgets.
What Is Tcl/Tk?
An introduction to Tcl, the embeddable command language created by John Ousterhout, and Tk, its companion toolkit for building cross-platform graphical interfa…
Your First Tcl Script
Write, run, and extend a first Tcl script — from a simple puts statement to procedures, control flow, and a minimal Tk GUI.