Is my understanding correct that the body()
function currently can't return a function's body
intact, in order, and as characters ready for
editing?
My testing and reading of body()'s help indicate
that it can not.
Here's what I'm seeing.
Consider pasting
1+
and a function containing
x^2
together to get
1+x^2
As you can see below, body() reports three
elements, out of order.
> f<-function(x) x^2; b<-body(f); paste("1+",b, sep="")
[1] "1+^" "1+x" "1+2
I realize that this might be worked around with
something like
> f<-function(x) x^2;
b<-do.call(paste,as.list(c(deparse(body(f)),sep=""))); paste("1+",b, sep="")
[1] "1+x^2"
However, I'm asking a different question.
Is my understanding correct that body() can't
return a function's body intact, in order, and as
characters ready for editing?
Thanks,
Kingsley
> sessionInfo()
R version 2.12.1 (2010-12-16)
Platform: i486-pc-linux-gnu (32-bit)
locale:
[1] LC_CTYPE=en_US LC_NUMERIC=C LC_TIME=en_US
[4] LC_COLLATE=en_US LC_MONETARY=C LC_MESSAGES=en_US
[7] LC_PAPER=en_US LC_NAME=C LC_ADDRESS=C
[10] LC_TELEPHONE=C LC_MEASUREMENT=en_US LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] optimx_0.88 setRNG_2009.11-1 minqa_1.1.13 Rcpp_0.9.2
[5] Rvmmin_2011-2.11 Rcgmin_2011-2.10 ucminf_1.0-5 BB_2011.2-1
[9] quadprog_1.5-3 numDeriv_2010.11-1 rgp_0.2-3 snowfall_1.84
[13] snow_0.3-3 rrules_0.1-0 emoa_0.4-3
loaded via a namespace (and not attached):
[1] tcltk_2.12.1 tools_2.12.1
> Sys.getlocale()
[1]
"LC_CTYPE=en_US;LC_NUMERIC=C;LC_TIME=en_US;LC_COLLATE=en_US;LC_MONETARY=C;LC_MESSAGES=en_US;LC_PAPER=en_US;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US;LC_IDENTIFICATION=C"
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