Trait num::cast::FromPrimitive
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[src]
pub trait FromPrimitive {
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> { ... }
}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, then 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, then 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, then 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, then 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, then 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, then 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, then 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, then 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, then 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, then 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, then 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, then None is returned.
Implementations on Foreign Types
impl FromPrimitive for u64[src]
fn from_isize(n: isize) -> Option<u64>[src]
fn from_i8(n: i8) -> Option<u64>[src]
fn from_i16(n: i16) -> Option<u64>[src]
fn from_i32(n: i32) -> Option<u64>[src]
fn from_i64(n: i64) -> Option<u64>[src]
fn from_usize(n: usize) -> Option<u64>[src]
fn from_u8(n: u8) -> Option<u64>[src]
fn from_u16(n: u16) -> Option<u64>[src]
fn from_u32(n: u32) -> Option<u64>[src]
fn from_u64(n: u64) -> Option<u64>[src]
fn from_f32(n: f32) -> Option<u64>[src]
fn from_f64(n: f64) -> Option<u64>[src]
impl<T> FromPrimitive for Wrapping<T> where
T: FromPrimitive, [src]
T: FromPrimitive,