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Number

Enum Number 

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pub enum Number {
    I64(i64),
    U64(u64),
    F64(f64),
}
Expand description

A number, kept in the widest lossless representation of its source.

Three variants rather than a single f64: JSON integers above i64::MAX (snowflake IDs, hashes) are real and must round-trip exactly, and f64 silently rounds them.

U64 is reserved for values that do not fit an i64; construct through Number::from_u64 to keep that canonical. Without it, derived PartialEq would make I64(1) != U64(1) and equality would depend on which parser produced the value.

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I64(i64)

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U64(u64)

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F64(f64)

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impl Number

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pub fn from_u64(u: u64) -> Self

Demotes to I64 when the value fits, so that every representable integer has exactly one representation.

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impl Clone for Number

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for Number

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impl Debug for Number

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

Formats the value using the given formatter. Read more
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impl From<f64> for Number

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fn from(f: f64) -> Self

Converts to this type from the input type.
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impl From<i64> for Number

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fn from(i: i64) -> Self

Converts to this type from the input type.
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impl From<u64> for Number

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fn from(u: u64) -> Self

Converts to this type from the input type.
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impl PartialEq for Number

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for Number

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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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.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.