mapply(), was Re: [Rd] sprintf

[Peter Dalgaard]

Prof Brian Ripley <ripley at stats.ox.ac.uk> writes:

> sprintf() in R-devel is now vectorized, re-cycling its arguments,
> including fmt, as required.

Thanks, Brian. 

This leaves me with one question: what is actually the wisdom behind
the USE.NAMES default in mapply? Seems to me that it gets in the way
more often that it is useful (and has some real problems with
recycling, clearly). Thomas?

> >>> mapply(sprintf, "%04d %s", 1:3, "abc", USE.NAMES=FALSE)
> >> [1] "0001 abc" "0002 abc" "0003 abc"

> >>     if (USE.NAMES && length(dots) && is.character(dots[[1]]) &&
> >>         is.null(names(answer)))
> >>         names(answer) <- dots[[1]]
> >> )


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
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