Wrap a function so it will automatically browse()
on error
Source: R/adverb-auto-browse.R
auto_browse.Rd
A function wrapped with auto_browse()
will automatically enter an
interactive debugger using browser()
when ever it encounters an error.
Value
A function that takes the same arguments as .f
, but returns
a different value, as described above.
Adverbs
This function is called an adverb because it modifies the effect of a function (a verb). If you'd like to include a function created an adverb in a package, be sure to read faq-adverbs-export.
Examples
# For interactive usage, auto_browse() is useful because it automatically
# starts a browser() in the right place.
f <- function(x) {
y <- 20
if (x > 5) {
stop("!")
} else {
x
}
}
if (interactive()) {
map(1:6, auto_browse(f))
}