A knitr engine for Zig chunks — eng

Compiles the code of a chunk with zig_function() and defines its exported functions in the environment of the document, so later R chunks can call them. rzig registers the engine as zig when knitr is loaded; to register it explicitly, call knitr::knit_engines$set(zig = rzig::eng_zig).

Usage

eng_zig(options)

Arguments

options: The chunk options knitr passes to an engine.

Value

The chunk output for knitr.

Examples

# A document can use a chunk such as
#   ```{zig}
#   pub fn twice(x: f64) f64 { return 2 * x; }
#   ```
# after which R chunks call twice(). The engine is registered as "zig":
if (requireNamespace("knitr", quietly = TRUE)) {
  knitr::knit_engines$set(zig = eng_zig)
  is.function(knitr::knit_engines$get("zig"))
}
#> [1] TRUE