Trait num::NumCast
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pub trait NumCast: ToPrimitive { fn from<T>(n: T) -> Option<Self>
where
T: ToPrimitive; }
An interface for casting between machine scalars.
Required Methods
fn from<T>(n: T) -> Option<Self> where
T: ToPrimitive,
T: ToPrimitive,
Creates a number from another value that can be converted into
a primitive via the ToPrimitive
trait.
Implementations on Foreign Types
impl NumCast for f64
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fn from<N>(n: N) -> Option<f64> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for u64
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fn from<N>(n: N) -> Option<u64> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for i64
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fn from<N>(n: N) -> Option<i64> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for i8
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fn from<N>(n: N) -> Option<i8> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for f32
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fn from<N>(n: N) -> Option<f32> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for u16
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fn from<N>(n: N) -> Option<u16> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for i32
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fn from<N>(n: N) -> Option<i32> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for isize
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fn from<N>(n: N) -> Option<isize> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for usize
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fn from<N>(n: N) -> Option<usize> where
N: ToPrimitive,
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N: ToPrimitive,
impl<T> NumCast for Wrapping<T> where
T: NumCast,
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T: NumCast,
fn from<U>(n: U) -> Option<Wrapping<T>> where
U: ToPrimitive,
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U: ToPrimitive,
impl NumCast for u8
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fn from<N>(n: N) -> Option<u8> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for i16
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fn from<N>(n: N) -> Option<i16> where
N: ToPrimitive,
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N: ToPrimitive,
impl NumCast for u32
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fn from<N>(n: N) -> Option<u32> where
N: ToPrimitive,
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N: ToPrimitive,