The variables the result of a call is computed from, resolved through the dataflow graph: the variables read
by its arguments, through every call in between. An argument whose role in the signature carries no data is no
input (the file of write.csv, a flag, a callee), nor is what a call quotes or looks up in a data mask (x in
filter(df, x > 1)), or a use that only names a function.
The variables the result of a call is computed from, resolved through the dataflow graph: the variables read by its arguments, through every call in between. An argument whose role in the signature carries no data is no input (the file of
write.csv, a flag, a callee), nor is what a call quotes or looks up in a data mask (xinfilter(df, x > 1)), or a use that only names a function.