Struct arithmetic_eval::fns::Merge

pub struct Merge;

Function that merges two tuples.

Type

(using arithmetic-typing notation)

(['T], ['T]) -> ['T]

Examples

let program = "
    // Merges all arguments (which should be tuples) into a single tuple.
    super_merge = |...xs| fold(xs, (), merge);
    super_merge((1, 2), (3,), (), (4, 5, 6)) == (1, 2, 3, 4, 5, 6)
";
let program = Untyped::<F32Grammar>::parse_statements(program)?;
let module = ExecutableModule::new("test_merge", &program)?;

let mut env = Environment::new();
env.insert_native_fn("fold", fns::Fold)
    .insert_native_fn("merge", fns::Merge);
assert_eq!(module.with_env(&env)?.run()?, Value::Bool(true));

Trait Implementations

impl Clone for Merge

fn clone(&self) -> Merge

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Merge

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Merge

fn default() -> Merge

Returns the “default value” for a type.

impl<T: Clone> NativeFn<T> for Merge

fn evaluate( &self, args: Vec<SpannedValue<T>>, ctx: &mut CallContext<'_, T> ) -> EvalResult<T>

Executes the function on the specified arguments.

impl Copy for Merge