Trait num_traits::cast::FromPrimitive

pub trait FromPrimitive: Sized {
    fn from_i64(n: i64) -> Option<Self>;
    fn from_u64(n: u64) -> Option<Self>;

    fn from_isize(n: isize) -> Option<Self> { ... }
    fn from_i8(n: i8) -> Option<Self> { ... }
    fn from_i16(n: i16) -> Option<Self> { ... }
    fn from_i32(n: i32) -> Option<Self> { ... }
    fn from_usize(n: usize) -> Option<Self> { ... }
    fn from_u8(n: u8) -> Option<Self> { ... }
    fn from_u16(n: u16) -> Option<Self> { ... }
    fn from_u32(n: u32) -> Option<Self> { ... }
    fn from_f32(n: f32) -> Option<Self> { ... }
    fn from_f64(n: f64) -> Option<Self> { ... }
}

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A generic trait for converting a number to a value.

Required Methods

fn from_i64(n: i64) -> Option<Self>[−]

Convert an i64 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_u64(n: u64) -> Option<Self>[−]

Convert an u64 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

Provided Methods

fn from_isize(n: isize) -> Option<Self>[−]

Convert an isize to return an optional value of this type. If the value cannot be represented by this value, the None is returned.

fn from_i8(n: i8) -> Option<Self>[−]

Convert an i8 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_i16(n: i16) -> Option<Self>[−]

Convert an i16 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_i32(n: i32) -> Option<Self>[−]

Convert an i32 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_usize(n: usize) -> Option<Self>[−]

Convert a usize to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_u8(n: u8) -> Option<Self>[−]

Convert an u8 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_u16(n: u16) -> Option<Self>[−]

Convert an u16 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_u32(n: u32) -> Option<Self>[−]

Convert an u32 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_f32(n: f32) -> Option<Self>[−]

Convert a f32 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

fn from_f64(n: f64) -> Option<Self>[−]

Convert a f64 to return an optional value of this type. If the type cannot be represented by this value, the None is returned.

Implementations on Foreign Types

impl FromPrimitive for isize

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fn from_i8(n: i8) -> Option<isize>

fn from_i16(n: i16) -> Option<isize>

fn from_i32(n: i32) -> Option<isize>

fn from_i64(n: i64) -> Option<isize>

fn from_u8(n: u8) -> Option<isize>

fn from_u16(n: u16) -> Option<isize>

fn from_u32(n: u32) -> Option<isize>

fn from_u64(n: u64) -> Option<isize>

fn from_f32(n: f32) -> Option<isize>

fn from_f64(n: f64) -> Option<isize>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for i8

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fn from_i8(n: i8) -> Option<i8>

fn from_i16(n: i16) -> Option<i8>

fn from_i32(n: i32) -> Option<i8>

fn from_i64(n: i64) -> Option<i8>

fn from_u8(n: u8) -> Option<i8>

fn from_u16(n: u16) -> Option<i8>

fn from_u32(n: u32) -> Option<i8>

fn from_u64(n: u64) -> Option<i8>

fn from_f32(n: f32) -> Option<i8>

fn from_f64(n: f64) -> Option<i8>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for i16

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fn from_i8(n: i8) -> Option<i16>

fn from_i16(n: i16) -> Option<i16>

fn from_i32(n: i32) -> Option<i16>

fn from_i64(n: i64) -> Option<i16>

fn from_u8(n: u8) -> Option<i16>

fn from_u16(n: u16) -> Option<i16>

fn from_u32(n: u32) -> Option<i16>

fn from_u64(n: u64) -> Option<i16>

fn from_f32(n: f32) -> Option<i16>

fn from_f64(n: f64) -> Option<i16>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for i32

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fn from_i8(n: i8) -> Option<i32>

fn from_i16(n: i16) -> Option<i32>

fn from_i32(n: i32) -> Option<i32>

fn from_i64(n: i64) -> Option<i32>

fn from_u8(n: u8) -> Option<i32>

fn from_u16(n: u16) -> Option<i32>

fn from_u32(n: u32) -> Option<i32>

fn from_u64(n: u64) -> Option<i32>

fn from_f32(n: f32) -> Option<i32>

fn from_f64(n: f64) -> Option<i32>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for i64

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fn from_i8(n: i8) -> Option<i64>

fn from_i16(n: i16) -> Option<i64>

fn from_i32(n: i32) -> Option<i64>

fn from_i64(n: i64) -> Option<i64>

fn from_u8(n: u8) -> Option<i64>

fn from_u16(n: u16) -> Option<i64>

fn from_u32(n: u32) -> Option<i64>

fn from_u64(n: u64) -> Option<i64>

fn from_f32(n: f32) -> Option<i64>

fn from_f64(n: f64) -> Option<i64>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for usize

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fn from_i8(n: i8) -> Option<usize>

fn from_i16(n: i16) -> Option<usize>

fn from_i32(n: i32) -> Option<usize>

fn from_i64(n: i64) -> Option<usize>

fn from_u8(n: u8) -> Option<usize>

fn from_u16(n: u16) -> Option<usize>

fn from_u32(n: u32) -> Option<usize>

fn from_u64(n: u64) -> Option<usize>

fn from_f32(n: f32) -> Option<usize>

fn from_f64(n: f64) -> Option<usize>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for u8

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fn from_i8(n: i8) -> Option<u8>

fn from_i16(n: i16) -> Option<u8>

fn from_i32(n: i32) -> Option<u8>

fn from_i64(n: i64) -> Option<u8>

fn from_u8(n: u8) -> Option<u8>

fn from_u16(n: u16) -> Option<u8>

fn from_u32(n: u32) -> Option<u8>

fn from_u64(n: u64) -> Option<u8>

fn from_f32(n: f32) -> Option<u8>

fn from_f64(n: f64) -> Option<u8>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for u16

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fn from_i8(n: i8) -> Option<u16>

fn from_i16(n: i16) -> Option<u16>

fn from_i32(n: i32) -> Option<u16>

fn from_i64(n: i64) -> Option<u16>

fn from_u8(n: u8) -> Option<u16>

fn from_u16(n: u16) -> Option<u16>

fn from_u32(n: u32) -> Option<u16>

fn from_u64(n: u64) -> Option<u16>

fn from_f32(n: f32) -> Option<u16>

fn from_f64(n: f64) -> Option<u16>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for u32

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fn from_i8(n: i8) -> Option<u32>

fn from_i16(n: i16) -> Option<u32>

fn from_i32(n: i32) -> Option<u32>

fn from_i64(n: i64) -> Option<u32>

fn from_u8(n: u8) -> Option<u32>

fn from_u16(n: u16) -> Option<u32>

fn from_u32(n: u32) -> Option<u32>

fn from_u64(n: u64) -> Option<u32>

fn from_f32(n: f32) -> Option<u32>

fn from_f64(n: f64) -> Option<u32>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for u64

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fn from_i8(n: i8) -> Option<u64>

fn from_i16(n: i16) -> Option<u64>

fn from_i32(n: i32) -> Option<u64>

fn from_i64(n: i64) -> Option<u64>

fn from_u8(n: u8) -> Option<u64>

fn from_u16(n: u16) -> Option<u64>

fn from_u32(n: u32) -> Option<u64>

fn from_u64(n: u64) -> Option<u64>

fn from_f32(n: f32) -> Option<u64>

fn from_f64(n: f64) -> Option<u64>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for f32

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fn from_i8(n: i8) -> Option<f32>

fn from_i16(n: i16) -> Option<f32>

fn from_i32(n: i32) -> Option<f32>

fn from_i64(n: i64) -> Option<f32>

fn from_u8(n: u8) -> Option<f32>

fn from_u16(n: u16) -> Option<f32>

fn from_u32(n: u32) -> Option<f32>

fn from_u64(n: u64) -> Option<f32>

fn from_f32(n: f32) -> Option<f32>

fn from_f64(n: f64) -> Option<f32>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl FromPrimitive for f64

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fn from_i8(n: i8) -> Option<f64>

fn from_i16(n: i16) -> Option<f64>

fn from_i32(n: i32) -> Option<f64>

fn from_i64(n: i64) -> Option<f64>

fn from_u8(n: u8) -> Option<f64>

fn from_u16(n: u16) -> Option<f64>

fn from_u32(n: u32) -> Option<f64>

fn from_u64(n: u64) -> Option<f64>

fn from_f32(n: f32) -> Option<f64>

fn from_f64(n: f64) -> Option<f64>

fn from_isize(n: isize) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

impl<T: FromPrimitive> FromPrimitive for Wrapping<T>

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fn from_u64(n: u64) -> Option<Self>

fn from_i64(n: i64) -> Option<Self>

fn from_isize(n: isize) -> Option<Self>

fn from_i8(n: i8) -> Option<Self>

fn from_i16(n: i16) -> Option<Self>

fn from_i32(n: i32) -> Option<Self>

fn from_usize(n: usize) -> Option<Self>

fn from_u8(n: u8) -> Option<Self>

fn from_u16(n: u16) -> Option<Self>

fn from_u32(n: u32) -> Option<Self>

fn from_f32(n: f32) -> Option<Self>

fn from_f64(n: f64) -> Option<Self>

Implementors