tcl Getting started with tcl Features of Tcl

Example

• Cross Platform Portability
  • Runs on Windows, Mac OS X, Linux, and virtually every variant of unix.
• Event driven programming
  • Trigger events based on variable read / write / unset.
  • Trigger events when a command is entered or left.
  • Trigger events when a I/O channel (file or network) becomes readable / writable.
  • Create your own events.
  • Trigger a command based on a timer.
• Object Oriented Programming
  • Mixins.
  • Superclasses and subclasses.
• Simple Grammar
• Full unicode support
  • It just works. No special commands are needed to handle unicode strings.
  • Convert to and from different encoding systems with ease.
• Flexible
  • Create new control structures and commands.
  • Access variables in the calling procedure's context.
  • Execute code in the calling procedure's context.
• Powerful introspection capabilities.
  • Many Tcl debuggers have been written in Tcl.
• Library interface
  • Integrate existing C libraries and provide a Tcl interface to the library.
  • Library "stubs" are not tied to any particular version of Tcl and will still work after a Tcl upgrade.
• Complete API
  • Embed a Tcl interpreter into your favorite language.
  • Python, Ruby, R, Java and others include a Tcl API.
• Embedded bigint library.
  • No special actions are needed to handle very large numerics.
• Safe interpreters
  • Create sandboxes in which user code can be run.
  • Enable and disable specific commands for the interpreter.
• Regular Expressions
  • A powerful and fast regular expression engine written by Henry Spencer (creator of regex).