[R] cannot have a function argument named 'break'
Prof Brian Ripley
ripley at stats.ox.ac.uk
Mon Nov 3 08:47:51 CET 2003
No, they are reserved names. That is explained in MASS4 and R-lang, for
example. The full list (of syntactically valid names) is
FALSE Inf NA NaN NULL TRUE
break else for function if in next repeat while
(S also has return, T and F)
Most progamming languages have reserved words, so I am surprised you are
surprised.
On Sun, 2 Nov 2003, Spencer Graves wrote:
> Yup. R 1.8.0 gives me a syntax error from "if", also:
>
> > iff <- function(if)if
> Error: syntax error
>
> spencer graves
>
> Thomas W Blackwell wrote:
>
> >Dear list -
> >
> >I just discovered to my surprise that I cannot define
> >a function with an argument named 'break' or 'while'!
> >'breaks' is okay. Maybe this is no surprise to the R
> >developers.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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