A control structure is a programming language construct which provides the coder the means to direct the flow of program execution based on some criteria.

Some examples in [Tcl] are [if], [while], [for], [foreach], and [switch] (also [case], but that's obsolete).

The [Expect] extension also defines new control structures.

Tcl is also fertile ground for creating [new control structures].




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[Category Glossary]