[][src]Struct arithmetic_eval::fns::AssertEq

pub struct AssertEq;

Equality assertion function.

Type

fn(T, T)

Examples

let program = r#"
    assert_eq(1 + 2, 3); // this assertion is fine
    assert_eq(3^2, 10); // this one will fail
"#;
let program = Untyped::<F32Grammar>::parse_statements(program)?;
let module = Environment::new()
    .insert_native_fn("assert_eq", fns::AssertEq)
    .compile_module("test_assert", &program)?;

let err = module.run().unwrap_err();
assert_eq!(*err.source().main_span().code().fragment(), "assert_eq(3^2, 10)");
assert_matches!(
    err.source().kind(),
    ErrorKind::NativeCall(ref msg) if msg == "Assertion failed: 3^2 == 10"
);

Trait Implementations

impl Clone for AssertEq[src]

impl Copy for AssertEq[src]

impl Debug for AssertEq[src]

impl Default for AssertEq[src]

impl<T: Display> NativeFn<T> for AssertEq[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Conv for T

impl<T> Conv for T

impl<T> FmtForward for T

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> Pipe for T where
    T: ?Sized

impl<T> Pipe for T

impl<T> PipeAsRef for T

impl<T> PipeBorrow for T

impl<T> PipeDeref for T

impl<T> PipeRef for T

impl<T> Tap for T

impl<T> Tap for T

impl<T, U> TapAsRef<U> for T where
    U: ?Sized

impl<T, U> TapBorrow<U> for T where
    U: ?Sized

impl<T> TapDeref for T

impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T> TryConv for T

impl<T> TryConv for T

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>,