Macro magnus::eval

macro_rules! eval {
    ($str:literal) => { ... };
    ($str:literal, $($bindings:tt)*) => { ... };
    ($ruby:expr, $str:literal) => { ... };
    ($ruby:expr, $str:literal, $($bindings:tt)*) => { ... };
}

Evaluate a literal string of Ruby code with the given local variables.

Any type that implements IntoValue can be passed to Ruby.

See also the eval function and Binding.

Panics

Panics if called from a non-Ruby thread.

Examples

let result: i64 = magnus::eval!("a + b", a = 1, b = 2).unwrap();
assert_eq!(result, 3)

let a = 1;
let b = 2;
let result: i64 = magnus::eval!("a + b", a, b).unwrap();
assert_eq!(result, 3);