[R] debug only top level function

[Duncan Murdoch]

On 06/06/2019 4:55 a.m., PIKAL Petr wrote:
> Dear all
> 
> I have a question about debug function. I did not use it for long time but my vague memory tell me, that when I used  debug(myfunction) in past, only myfunction was debugged and browser ignored any embedded function.
> 
> example (simple)
> 
> fff <- function(x) mean(x, na.rm=T)
> 
> when I issue
>> debug(fff)
>> fff(1:10)
> debugging in: fff(1:10)
> debug at #1: mean(x, na.rm = T)
> Browse[2]>
> debugging in: mean(x, na.rm = T)
> debug: UseMethod("mean")
> Browse[3]>
> debugging in: mean.default(x, na.rm = T)
> ...
> it starts debugging mean function. I understand that it is indicated by Browse[n] but it could be quite messy if I have many embedded functions and difficult to follow.
> 
> Can I persuade debug function not to bother with embedded functions (e.g. mean, median, mad, ...) and debug only my top level code?

There are several commands available.  Type "help" to see them:

n          next
s          step into
f          finish
c or cont  continue
Q          quit
where      show stack
help       show help
<expr>     evaluate expression


You want "n", and are getting "s".  I believe if you hit Enter without 
choosing one, it will do the same as the previous time, so you've 
probably used "s" sometime in the past.

Duncan Murdoch

> 
> Best regards
> Petr
> 
>> sessionInfo()
> R Under development (unstable) (2018-03-07 r74369)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
> Running under: Windows 10 x64 (build 17763)
> 
> Matrix products: default
> 
> locale:
> [1] LC_COLLATE=Czech_Czechia.1250  LC_CTYPE=Czech_Czechia.1250
> [3] LC_MONETARY=Czech_Czechia.1250 LC_NUMERIC=C
> [5] LC_TIME=Czech_Czechia.1250
> 
> attached base packages:
> [1] stats     datasets  utils     grDevices graphics  methods   base
> 
> other attached packages:
> [1] MASS_7.3-49     readxl_1.0.0    lattice_0.20-35 fun_0.1
> 
> loaded via a namespace (and not attached):
> [1] Rcpp_0.12.16     cellranger_1.1.0 grid_3.5.0       plyr_1.8.4
>   [5] gtable_0.2.0     scales_0.5.0     ggplot2_2.2.1    pillar_1.2.1
>   [9] rlang_0.2.0      lazyeval_0.2.1   rpart_4.1-13     tools_3.5.0
> [13] munsell_0.4.3    compiler_3.5.0   colorspace_1.3-2 tibble_1.4.2
>>
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