inst/doc/introduction.R

In callme: Easily Compile and Call Inline 'C' Functions

## ----include = FALSE----------------------------------------------------------
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)
knitr::knit_engines$set(callme = callme:::callme_engine)
library(callme)

## ----eval=FALSE---------------------------------------------------------------
# code <- r"(
# SEXP print_with_c(SEXP string) {
#    Rprintf("Printing in C: '%s'\n", CHAR(asChar(string)));
#    return R_NilValue;
# }
# )"
# 
# callme::compile(code, invisible = TRUE)
# print_with_c("hello")

## -----------------------------------------------------------------------------
print_with_c("hello")

## -----------------------------------------------------------------------------
add(c(1, 2, 3), c(4, 5, 6))