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Asked: 2026-05-20T07:18:51+00:00

I am a happy user of ESS for coding and debugging R code. I

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I am a happy user of ESS for coding and debugging R code. I have found a elusive bug recently deeply inside several for loops and ifs structures.

Is there any way of having ESS selectively travel the if/else structures or loop for all the values in a for loop?.

Does R or ESS have debugger mode where you can skip else clauses, loop the values and step into, step through, return etc?

[UPDATE]

Thanks @jubba for the link to the other SO question about debugging tools for R-language. At the end this was my real question. This other thread give the links for the kind of things that I wanted to know about the way of doing debugging in the current R.

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1 Answer

  1. Editorial Team

    There has been a more general question about debugging in R on Stackoverflow :

    Debugging tools for the R language

    One answer by Davor Cubranic points to ess-tracebug which is, according to its website, “An emacs package for interactive debugging and error tracing in ESS”. I’ve never used it myself, but it may be useful to you :

    http://code.google.com/p/ess-tracebug/

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