Need to check for writeable path
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Shians commented
Currently if a given path is not writable then the error returned is uninformative for an R user. I suggest checking the path is writable in R before calling the C++ code since working with filesystem in C++ is a massive pain prior to C++17.
data(iris)
qs::qsave(iris, "DoesNotExist/iris.qs")
#> Error in qs::qsave(iris, "DoesNotExist/iris.qs"): ios_base::clear: unspecified iostream_category error
Created on 2022-10-12 with reprex v2.0.2