#[repr(transparent)]pub struct Coerced<T>(pub T);
Expand description
The wrapper for values to force coercion
// Coercion to string
assert_eq!(ctx.eval::<Coerced<String>, _>("`abc`")?.0, "abc");
assert_eq!(ctx.eval::<Coerced<String>, _>("123")?.0, "123");
assert_eq!(ctx.eval::<Coerced<String>, _>("[1,'a']")?.0, "1,a");
assert_eq!(ctx.eval::<Coerced<String>, _>("({})")?.0, "[object Object]");
// Coercion to integer
assert!(ctx.eval::<i32, _>("123.5").is_err());
assert_eq!(ctx.eval::<Coerced<i32>, _>("123.5")?.0, 123);
assert!(ctx.eval::<i32, _>("`123`").is_err());
assert_eq!(ctx.eval::<Coerced<i32>, _>("`123`")?.0, 123);
// Coercion to floating-point
assert_eq!(ctx.eval::<f64, _>("123")?, 123.0);
assert_eq!(ctx.eval::<Coerced<f64>, _>("123")?.0, 123.0);
assert!(ctx.eval::<f64, _>("`123.5`").is_err());
assert_eq!(ctx.eval::<Coerced<f64>, _>("`123.5`")?.0, 123.5);
Tuple Fields§
§0: T
Trait Implementations§
source§impl<'js> FromJs<'js> for Coerced<String<'js>>
impl<'js> FromJs<'js> for Coerced<String<'js>>
Coerce a value to a string in the same way JavaScript would coerce values.
source§impl<'js> FromJs<'js> for Coerced<String>
impl<'js> FromJs<'js> for Coerced<String>
Coerce a value to a string in the same way JavaScript would coerce values.
source§impl<'js> FromJs<'js> for Coerced<bool>
impl<'js> FromJs<'js> for Coerced<bool>
Coerce a value to a bool
in the same way JavaScript would coerce values
source§impl<'js> FromJs<'js> for Coerced<f64>
impl<'js> FromJs<'js> for Coerced<f64>
Coerce a value to a f64
in the same way JavaScript would coerce values
source§impl<'js> FromJs<'js> for Coerced<i32>
impl<'js> FromJs<'js> for Coerced<i32>
Coerce a value to a i32
in the same way JavaScript would coerce values
source§impl<'js> FromJs<'js> for Coerced<i64>
impl<'js> FromJs<'js> for Coerced<i64>
Coerce a value to a i64
in the same way JavaScript would coerce values
source§impl<'js> FromJs<'js> for Coerced<u64>
impl<'js> FromJs<'js> for Coerced<u64>
Coerce a value to a u64
in the same way JavaScript would coerce values
source§impl<T> Ord for Coerced<T>where
T: Ord,
impl<T> Ord for Coerced<T>where
T: Ord,
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl<T> PartialEq for Coerced<T>where
T: PartialEq,
impl<T> PartialEq for Coerced<T>where
T: PartialEq,
source§impl<T> PartialOrd for Coerced<T>where
T: PartialOrd,
impl<T> PartialOrd for Coerced<T>where
T: PartialOrd,
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moreimpl<T> Copy for Coerced<T>where
T: Copy,
impl<T> Eq for Coerced<T>where
T: Eq,
impl<T> StructuralPartialEq for Coerced<T>
Auto Trait Implementations§
impl<T> RefUnwindSafe for Coerced<T>where
T: RefUnwindSafe,
impl<T> Send for Coerced<T>where
T: Send,
impl<T> Sync for Coerced<T>where
T: Sync,
impl<T> Unpin for Coerced<T>where
T: Unpin,
impl<T> UnwindSafe for Coerced<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<'js, T> FromParam<'js> for Twhere
T: FromJs<'js>,
impl<'js, T> FromParam<'js> for Twhere
T: FromJs<'js>,
source§fn param_requirement() -> ParamRequirement
fn param_requirement() -> ParamRequirement
The parameters requirements this value requires.
source§fn from_param<'a>(params: &mut ParamsAccessor<'a, 'js>) -> Result<T, Error>
fn from_param<'a>(params: &mut ParamsAccessor<'a, 'js>) -> Result<T, Error>
Convert from a parameter value.