Tcl is a very dynamic language. The proc command can be used to create wonderful treats that allow new programming styles. This page serves as a collection of those treats.

• Implicit upvar
• ObjectProc implements a type checking table-oriented proc
• Pass by reference similar to Implicit upvar
• Guarded proc warns if a procedure is redefined
• Let unknown know overloads unknown by extending the body in place
• Procs as objects creates pseudo-closures
• Procs as data structures "underloads" procs - they can't be called, but still have some use
• overproc - overload procs by nunber of args
• extending the notation of proc args - easy -switch handling

A somewhat related tool would be Arrays as cached functions

Also see Radical Language Modification

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