Trait num::cast::NumCast

[+] Show declaration

pub trait NumCast: ToPrimitive {
    fn from<T>(n: T) -> Option<Self>
    where
        T: ToPrimitive;
}

[−] Expand description

An interface for casting between machine scalars.

Required methods

fn from<T>(n: T) -> Option<Self> where
    T: ToPrimitive, [−]

Creates a number from another value that can be converted into a primitive via the ToPrimitive trait. If the source value cannot be represented by the target type, then None is returned.

Implementations on Foreign Types

impl NumCast for usize[−]

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fn from<N>(n: N) -> Option<usize> where
    N: ToPrimitive, 

impl<T> NumCast for Wrapping<T> where
    T: NumCast, [−]

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fn from<U>(n: U) -> Option<Wrapping<T>> where
    U: ToPrimitive, 

impl NumCast for i32[−]

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fn from<N>(n: N) -> Option<i32> where
    N: ToPrimitive, 

impl NumCast for u8[−]

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fn from<N>(n: N) -> Option<u8> where
    N: ToPrimitive, 

impl NumCast for u16[−]

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fn from<N>(n: N) -> Option<u16> where
    N: ToPrimitive, 

impl NumCast for i16[−]

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fn from<N>(n: N) -> Option<i16> where
    N: ToPrimitive, 

impl NumCast for u64[−]

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fn from<N>(n: N) -> Option<u64> where
    N: ToPrimitive, 

impl NumCast for i64[−]

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fn from<N>(n: N) -> Option<i64> where
    N: ToPrimitive, 

impl NumCast for isize[−]

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fn from<N>(n: N) -> Option<isize> where
    N: ToPrimitive, 

impl NumCast for f64[−]

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fn from<N>(n: N) -> Option<f64> where
    N: ToPrimitive, 

impl NumCast for u128[−]

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fn from<N>(n: N) -> Option<u128> where
    N: ToPrimitive, 

impl NumCast for f32[−]

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fn from<N>(n: N) -> Option<f32> where
    N: ToPrimitive, 

impl NumCast for i8[−]

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fn from<N>(n: N) -> Option<i8> where
    N: ToPrimitive, 

impl NumCast for i128[−]

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fn from<N>(n: N) -> Option<i128> where
    N: ToPrimitive, 

impl NumCast for u32[−]

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fn from<N>(n: N) -> Option<u32> where
    N: ToPrimitive, 

Implementors

impl<T> NumCast for Complex<T> where
    T: NumCast + Num, [+]

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fn from<U>(n: U) -> Option<Complex<T>> where
    U: ToPrimitive, 

impl<T: NumCast + Num> NumCast for Complex<T>

impl<T: Float> NumCast for NotNan<T>