[R] Portected? Variable assignment? Was RE: The use of F for False and T for True

Luke Tierney luke at stat.uiowa.edu
Mon Nov 17 17:03:07 CET 2008

Have a look at ?lockBinding



On Mon, 17 Nov 2008, Lucke, Joseph F wrote:

> The TRUE/FALSE vs. T/F issue brings up a related one.  Can one assign a
> variable a value during an R session that cannot be re-assigned any new
> value during the session?  That is, the variable is `protected' from
> change during the session.  `Session' here is not  precisely defined, so
> that will induce some problems.  A reference to this problem would be
> sufficient.
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> and provide commented, minimal, self-contained, reproducible code.

Luke Tierney
Chair, Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
    Actuarial Science
241 Schaeffer Hall                  email:      luke at stat.uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu

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