[R] Modern Symbolic debugger for R programmes?
murdoch.duncan at gmail.com
Tue Oct 9 12:03:33 CEST 2012
On 12-10-09 12:12 AM, Worik R wrote:
> I think I am whistling in the wind, but is there a modern symbolic
> debugger for R programmes?
> I am working through some one else's code, thousands of lines, that
> has the occasional bug in it, and a lot in my understanding of it.
> I cannot make setBreakpoint or findLineNum work. I get "No source
> refs found.". I am starting to loose my mind!
You need to source the code with source references. That is the default
for source(), but not for package installation. Set env variable
R_KEEP_PKG_SOURCE=yes for command line installs;
option(keep.source.pkgs=TRUE) for installs from within R.
Then you need to tell setBreakpoint where to look, through the "envir"
arg. See the 2nd example in the help page.
> A debugger where I could set breakpoints with a little more
> granularity than the function level and a little more accessible than
> the trace function. What I ideally want is GDB for R.
I thought you said you wanted a modern debugger :-). GDB is very 80ish.
I'm unaware of any debuggers that I would consider "modern", i.e. like
the debuggers from the 90s, but there are a number of pre-modern choices
that others have mentioned, and I don't think anyone has mentioned the
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