Trait core::convert::From 1.0.0
[−]
[src]
pub trait From<T>: Sized { fn from(_: T) -> Self; }
Construct Self
via a conversion.
Note: this trait must not fail. If the conversion can fail, use TryFrom
or a dedicated
method which returns an Option<T>
or a Result<T, E>
.
Examples
String
implements From<&str>
:
let string = "hello".to_string(); let other_string = String::from("hello"); assert_eq!(string, other_string);Run
Generic impls
Required Methods
fn from(_: T) -> Self
Performs the conversion.
Implementors
impl From<u8> for u16
impl From<u8> for u32
impl From<u8> for u64
impl From<u8> for u128
impl From<u8> for usize
impl From<u16> for u32
impl From<u16> for u64
impl From<u16> for u128
impl From<u32> for u64
impl From<u32> for u128
impl From<u64> for u128
impl From<i8> for i16
impl From<i8> for i32
impl From<i8> for i64
impl From<i8> for i128
impl From<i8> for isize
impl From<i16> for i32
impl From<i16> for i64
impl From<i16> for i128
impl From<i32> for i64
impl From<i32> for i128
impl From<i64> for i128
impl From<u8> for i16
impl From<u8> for i32
impl From<u8> for i64
impl From<u8> for i128
impl From<u16> for i32
impl From<u16> for i64
impl From<u16> for i128
impl From<u32> for i64
impl From<u32> for i128
impl From<u64> for i128
impl From<i8> for f32
impl From<i8> for f64
impl From<i16> for f32
impl From<i16> for f64
impl From<i32> for f64
impl From<u8> for f32
impl From<u8> for f64
impl From<u16> for f32
impl From<u16> for f64
impl From<u32> for f64
impl From<f32> for f64
impl<T> From<T> for T
impl<T: Copy> From<T> for Cell<T>
impl<T> From<T> for RefCell<T>
impl<T> From<T> for UnsafeCell<T>
impl From<char> for u32
impl From<u8> for char
impl<T> From<T> for Option<T>