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• Introduction
• Simple Text Output
• Assigning values to variables
• Evaluation & Substitutions 1: Grouping arguments with ""
• Evaluation & Substitutions 2: Grouping arguments with {}
• Evaluation & Substitutions 3: Grouping arguments with []
• Results of a command - Math 101
• Numeric Comparisons 101 - if
• Textual Comparison - switch
• Looping 101 - While loop
• Looping 102 - For and incr
• Adding new commands to Tcl - proc
• Variations in proc arguments and return values
• Variable scope - global and upvar
• Tcl Data Structures 101 - The list
• Adding & Deleting members of a list
• More list commands - lsearch, lsort, lrange
• String Subcommands - length index range
• String comparisons - compare match first last wordend
• Modifying Strings - tolower, toupper, trim, format
• Regular Expressions 101
• More Examples Of Regular Expressions
• More Quoting Hell - Regular Expressions 102
• Associative Arrays
• More On Arrays - Iterating and use in procedures
• File Access 101
• Information about Files - file, glob
• Invoking Subprocesses from Tcl - exec, open
• Learning the existence of commands and variables ? - info
• State of the interpreter - info
• Information about procs - info
• Modularization - source
• Building reusable libraries - packages and namespaces
• Creating Commands - eval
• More command construction - format, list
• Substitution without evaluation - format, subst
• Changing Working Directory - cd, pwd
• Debugging & Errors - errorInfo errorCode catch error return
• More Debugging - trace
• Command line arguments and environment strings
• Leftovers - time, unset
• Channel I/O: socket, fileevent, vwait
• Time and Date - clock
• More channel I/O - fblocked & fconfigure
• Child interpreters