Function Rf_mkString 

pub unsafe fn Rf_mkString(s: *const c_char) -> SEXP

Create a length-1 string vector from a C string.

Rust equivalent of R’s inline Rf_mkString(s), which is shorthand for ScalarString(mkChar(s)).

Safety

• s must be a valid null-terminated C string
• Must be called from R’s main thread
• Result must be protected from GC