Trait From

pub trait From<Src> {
    type Output;

    // Required method
    fn cast(_: Src) -> Self::Output;
}

The “cast from” operation

Required Associated Types

type Output

The result of the cast operation: either Self or Result<Self, Error>

Required Methods

fn cast(_: Src) -> Self::Output

Checked cast from Src to Self

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl From<f32> for f32

type Output = f32

fn cast(src: f32) -> f32

impl From<f32> for f64

type Output = f64

fn cast(src: f32) -> f64

impl From<f32> for i8

type Output = Result<i8, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for i16

type Output = Result<i16, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for i32

type Output = Result<i32, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for i64

type Output = Result<i64, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for isize

type Output = Result<isize, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for u8

type Output = Result<u8, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for u16

type Output = Result<u16, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for u32

type Output = Result<u32, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for u64

type Output = Result<u64, Error>

fn cast(src: f32) -> Self::Output

impl From<f32> for usize

type Output = Result<usize, Error>

fn cast(src: f32) -> Self::Output

impl From<f64> for f32

type Output = Result<f32, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for f64

type Output = f64

fn cast(src: f64) -> f64

impl From<f64> for i8

type Output = Result<i8, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for i16

type Output = Result<i16, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for i32

type Output = Result<i32, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for i64

type Output = Result<i64, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for isize

type Output = Result<isize, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for u8

type Output = Result<u8, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for u16

type Output = Result<u16, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for u32

type Output = Result<u32, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for u64

type Output = Result<u64, Error>

fn cast(src: f64) -> Self::Output

impl From<f64> for usize

type Output = Result<usize, Error>

fn cast(src: f64) -> Self::Output

impl From<i8> for f32

type Output = f32

fn cast(src: i8) -> f32

impl From<i8> for f64

type Output = f64

fn cast(src: i8) -> f64

impl From<i8> for i8

type Output = i8

fn cast(src: i8) -> i8

impl From<i8> for i16

type Output = i16

fn cast(src: i8) -> i16

impl From<i8> for i32

type Output = i32

fn cast(src: i8) -> i32

impl From<i8> for i64

type Output = i64

fn cast(src: i8) -> i64

impl From<i8> for isize

type Output = isize

fn cast(src: i8) -> isize

impl From<i8> for u8

type Output = Result<u8, Error>

fn cast(src: i8) -> Self::Output

impl From<i8> for u16

type Output = Result<u16, Error>

fn cast(src: i8) -> Self::Output

impl From<i8> for u32

type Output = Result<u32, Error>

fn cast(src: i8) -> Self::Output

impl From<i8> for u64

type Output = Result<u64, Error>

fn cast(src: i8) -> Self::Output

impl From<i8> for usize

type Output = Result<usize, Error>

fn cast(src: i8) -> Self::Output

impl From<i16> for f32

type Output = f32

fn cast(src: i16) -> f32

impl From<i16> for f64

type Output = f64

fn cast(src: i16) -> f64

impl From<i16> for i8

type Output = Result<i8, Error>

fn cast(src: i16) -> Self::Output

impl From<i16> for i16

type Output = i16

fn cast(src: i16) -> i16

impl From<i16> for i32

type Output = i32

fn cast(src: i16) -> i32

impl From<i16> for i64

type Output = i64

fn cast(src: i16) -> i64

impl From<i16> for isize

type Output = isize

fn cast(src: i16) -> isize

impl From<i16> for u8

type Output = Result<u8, Error>

fn cast(src: i16) -> Self::Output

impl From<i16> for u16

type Output = Result<u16, Error>

fn cast(src: i16) -> Self::Output

impl From<i16> for u32

type Output = Result<u32, Error>

fn cast(src: i16) -> Self::Output

impl From<i16> for u64

type Output = Result<u64, Error>

fn cast(src: i16) -> Self::Output

impl From<i16> for usize

type Output = Result<usize, Error>

fn cast(src: i16) -> Self::Output

impl From<i32> for f32

type Output = f32

fn cast(src: i32) -> f32

impl From<i32> for f64

type Output = f64

fn cast(src: i32) -> f64

impl From<i32> for i8

type Output = Result<i8, Error>

fn cast(src: i32) -> Self::Output

impl From<i32> for i16

type Output = Result<i16, Error>

fn cast(src: i32) -> Self::Output

impl From<i32> for i32

type Output = i32

fn cast(src: i32) -> i32

impl From<i32> for i64

type Output = i64

fn cast(src: i32) -> i64

impl From<i32> for isize

type Output = isize

fn cast(src: i32) -> isize

impl From<i32> for u8

type Output = Result<u8, Error>

fn cast(src: i32) -> Self::Output

impl From<i32> for u16

type Output = Result<u16, Error>

fn cast(src: i32) -> Self::Output

impl From<i32> for u32

type Output = Result<u32, Error>

fn cast(src: i32) -> Self::Output

impl From<i32> for u64

type Output = Result<u64, Error>

fn cast(src: i32) -> Self::Output

impl From<i32> for usize

type Output = Result<usize, Error>

fn cast(src: i32) -> Self::Output

impl From<i64> for f32

type Output = f32

fn cast(src: i64) -> f32

impl From<i64> for f64

type Output = f64

fn cast(src: i64) -> f64

impl From<i64> for i8

type Output = Result<i8, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for i16

type Output = Result<i16, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for i32

type Output = Result<i32, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for i64

type Output = i64

fn cast(src: i64) -> i64

impl From<i64> for isize

type Output = isize

fn cast(src: i64) -> isize

impl From<i64> for u8

type Output = Result<u8, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for u16

type Output = Result<u16, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for u32

type Output = Result<u32, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for u64

type Output = Result<u64, Error>

fn cast(src: i64) -> Self::Output

impl From<i64> for usize

type Output = Result<usize, Error>

fn cast(src: i64) -> Self::Output

impl From<isize> for f32

type Output = f32

fn cast(src: isize) -> f32

impl From<isize> for f64

type Output = f64

fn cast(src: isize) -> f64

impl From<isize> for i8

type Output = Result<i8, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for i16

type Output = Result<i16, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for i32

type Output = Result<i32, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for i64

type Output = i64

fn cast(src: isize) -> i64

impl From<isize> for isize

type Output = isize

fn cast(src: isize) -> isize

impl From<isize> for u8

type Output = Result<u8, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for u16

type Output = Result<u16, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for u32

type Output = Result<u32, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for u64

type Output = Result<u64, Error>

fn cast(src: isize) -> Self::Output

impl From<isize> for usize

type Output = Result<usize, Error>

fn cast(src: isize) -> Self::Output

impl From<u8> for f32

type Output = f32

fn cast(src: u8) -> f32

impl From<u8> for f64

type Output = f64

fn cast(src: u8) -> f64

impl From<u8> for i8

type Output = Result<i8, Error>

fn cast(src: u8) -> Self::Output

impl From<u8> for i16

type Output = i16

fn cast(src: u8) -> i16

impl From<u8> for i32

type Output = i32

fn cast(src: u8) -> i32

impl From<u8> for i64

type Output = i64

fn cast(src: u8) -> i64

impl From<u8> for isize

type Output = isize

fn cast(src: u8) -> isize

impl From<u8> for u8

type Output = u8

fn cast(src: u8) -> u8

impl From<u8> for u16

type Output = u16

fn cast(src: u8) -> u16

impl From<u8> for u32

type Output = u32

fn cast(src: u8) -> u32

impl From<u8> for u64

type Output = u64

fn cast(src: u8) -> u64

impl From<u8> for usize

type Output = usize

fn cast(src: u8) -> usize

impl From<u16> for f32

type Output = f32

fn cast(src: u16) -> f32

impl From<u16> for f64

type Output = f64

fn cast(src: u16) -> f64

impl From<u16> for i8

type Output = Result<i8, Error>

fn cast(src: u16) -> Self::Output

impl From<u16> for i16

type Output = Result<i16, Error>

fn cast(src: u16) -> Self::Output

impl From<u16> for i32

type Output = i32

fn cast(src: u16) -> i32

impl From<u16> for i64

type Output = i64

fn cast(src: u16) -> i64

impl From<u16> for isize

type Output = isize

fn cast(src: u16) -> isize

impl From<u16> for u8

type Output = Result<u8, Error>

fn cast(src: u16) -> Self::Output

impl From<u16> for u16

type Output = u16

fn cast(src: u16) -> u16

impl From<u16> for u32

type Output = u32

fn cast(src: u16) -> u32

impl From<u16> for u64

type Output = u64

fn cast(src: u16) -> u64

impl From<u16> for usize

type Output = usize

fn cast(src: u16) -> usize

impl From<u32> for f32

type Output = f32

fn cast(src: u32) -> f32

impl From<u32> for f64

type Output = f64

fn cast(src: u32) -> f64

impl From<u32> for i8

type Output = Result<i8, Error>

fn cast(src: u32) -> Self::Output

impl From<u32> for i16

type Output = Result<i16, Error>

fn cast(src: u32) -> Self::Output

impl From<u32> for i32

type Output = Result<i32, Error>

fn cast(src: u32) -> Self::Output

impl From<u32> for i64

type Output = i64

fn cast(src: u32) -> i64

impl From<u32> for isize

type Output = isize

fn cast(src: u32) -> isize

impl From<u32> for u8

type Output = Result<u8, Error>

fn cast(src: u32) -> Self::Output

impl From<u32> for u16

type Output = Result<u16, Error>

fn cast(src: u32) -> Self::Output

impl From<u32> for u32

type Output = u32

fn cast(src: u32) -> u32

impl From<u32> for u64

type Output = u64

fn cast(src: u32) -> u64

impl From<u32> for usize

type Output = usize

fn cast(src: u32) -> usize

impl From<u64> for f32

type Output = f32

fn cast(src: u64) -> f32

impl From<u64> for f64

type Output = f64

fn cast(src: u64) -> f64

impl From<u64> for i8

type Output = Result<i8, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for i16

type Output = Result<i16, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for i32

type Output = Result<i32, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for i64

type Output = Result<i64, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for isize

type Output = Result<isize, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for u8

type Output = Result<u8, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for u16

type Output = Result<u16, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for u32

type Output = Result<u32, Error>

fn cast(src: u64) -> Self::Output

impl From<u64> for u64

type Output = u64

fn cast(src: u64) -> u64

impl From<u64> for usize

type Output = usize

fn cast(src: u64) -> usize

impl From<usize> for f32

type Output = f32

fn cast(src: usize) -> f32

impl From<usize> for f64

type Output = f64

fn cast(src: usize) -> f64

impl From<usize> for i8

type Output = Result<i8, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for i16

type Output = Result<i16, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for i32

type Output = Result<i32, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for i64

type Output = Result<i64, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for isize

type Output = Result<isize, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for u8

type Output = Result<u8, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for u16

type Output = Result<u16, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for u32

type Output = Result<u32, Error>

fn cast(src: usize) -> Self::Output

impl From<usize> for u64

type Output = u64

fn cast(src: usize) -> u64

impl From<usize> for usize

type Output = usize

fn cast(src: usize) -> usize

Implementors