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Fifth Annual Tcl/Tk Workshop, 1997
Assertions for the Tcl Language
Jonathan E. Cook
Department of Computer Science
New Mexico State University
Las Cruces, NM
Abstract
Assertions, even as simple as the C assert macro, offer
important self-checking properties to programs, and improve the robustness
of software when they are used. This paper describes ASSERTCL,
an assertion package for the Tcl programming language. Our assertions take
the form of commands in the program text, and cover point assertions about
the computation state, assertions about procedure input values and the
return value, and assertions about the values that variables may take on
over their whole lifetime. In addition, universal and existential quantifiers
are provided for both lists and arrays, not only for individual elements,
but for sequences of elements as well.
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