pub trait Sub<Rhs = Self> {
type Output;
// Required method
fn sub(self, rhs: Rhs) -> Self::Output;
}
Expand description
The subtraction operator -
.
Note that Rhs
is Self
by default, but this is not mandatory. For
example, std::time::SystemTime
implements Sub<Duration>
, which permits
operations of the form SystemTime = SystemTime - Duration
.
§Examples
§Sub
tractable points
use std::ops::Sub;
#[derive(Debug, Copy, Clone, PartialEq)]
struct Point {
x: i32,
y: i32,
}
impl Sub for Point {
type Output = Self;
fn sub(self, other: Self) -> Self::Output {
Self {
x: self.x - other.x,
y: self.y - other.y,
}
}
}
assert_eq!(Point { x: 3, y: 3 } - Point { x: 2, y: 3 },
Point { x: 1, y: 0 });
§Implementing Sub
with generics
Here is an example of the same Point
struct implementing the Sub
trait
using generics.
use std::ops::Sub;
#[derive(Debug, PartialEq)]
struct Point<T> {
x: T,
y: T,
}
// Notice that the implementation uses the associated type `Output`.
impl<T: Sub<Output = T>> Sub for Point<T> {
type Output = Self;
fn sub(self, other: Self) -> Self::Output {
Point {
x: self.x - other.x,
y: self.y - other.y,
}
}
}
assert_eq!(Point { x: 2, y: 3 } - Point { x: 1, y: 0 },
Point { x: 1, y: 3 });
Required Associated Types§
Required Methods§
Implementors§
1.74.0 (const: unstable) · Source§impl Sub for Saturating<i128>
impl Sub for Saturating<i128>
type Output = Saturating<i128>
1.74.0 (const: unstable) · Source§impl Sub for Saturating<isize>
impl Sub for Saturating<isize>
type Output = Saturating<isize>
1.74.0 (const: unstable) · Source§impl Sub for Saturating<u128>
impl Sub for Saturating<u128>
type Output = Saturating<u128>
1.74.0 (const: unstable) · Source§impl Sub for Saturating<usize>
impl Sub for Saturating<usize>
type Output = Saturating<usize>
Source§impl Sub for EdwardsPoint
impl Sub for EdwardsPoint
type Output = EdwardsPoint
Source§impl Sub for RistrettoPoint
impl Sub for RistrettoPoint
type Output = RistrettoPoint
Source§impl Sub for CipherCtxFlags
impl Sub for CipherCtxFlags
type Output = CipherCtxFlags
Source§impl Sub for CMSOptions
impl Sub for CMSOptions
type Output = CMSOptions
Source§impl Sub for Pkcs7Flags
impl Sub for Pkcs7Flags
type Output = Pkcs7Flags
Source§impl Sub for ExtensionContext
impl Sub for ExtensionContext
type Output = ExtensionContext
Source§impl Sub for ShutdownState
impl Sub for ShutdownState
type Output = ShutdownState
Source§impl Sub for SslOptions
impl Sub for SslOptions
type Output = SslOptions
Source§impl Sub for SslSessionCacheMode
impl Sub for SslSessionCacheMode
type Output = SslSessionCacheMode
Source§impl Sub for SslVerifyMode
impl Sub for SslVerifyMode
type Output = SslVerifyMode
Source§impl Sub for X509CheckFlags
impl Sub for X509CheckFlags
type Output = X509CheckFlags
Source§impl Sub for X509VerifyFlags
impl Sub for X509VerifyFlags
type Output = X509VerifyFlags
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i8>> for &Saturating<i8>
impl Sub<&Saturating<i8>> for &Saturating<i8>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i8>> for Saturating<i8>
impl Sub<&Saturating<i8>> for Saturating<i8>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i16>> for &Saturating<i16>
impl Sub<&Saturating<i16>> for &Saturating<i16>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i16>> for Saturating<i16>
impl Sub<&Saturating<i16>> for Saturating<i16>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i32>> for &Saturating<i32>
impl Sub<&Saturating<i32>> for &Saturating<i32>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i32>> for Saturating<i32>
impl Sub<&Saturating<i32>> for Saturating<i32>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i64>> for &Saturating<i64>
impl Sub<&Saturating<i64>> for &Saturating<i64>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i64>> for Saturating<i64>
impl Sub<&Saturating<i64>> for Saturating<i64>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i128>> for &Saturating<i128>
impl Sub<&Saturating<i128>> for &Saturating<i128>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<i128>> for Saturating<i128>
impl Sub<&Saturating<i128>> for Saturating<i128>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<isize>> for &Saturating<isize>
impl Sub<&Saturating<isize>> for &Saturating<isize>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<isize>> for Saturating<isize>
impl Sub<&Saturating<isize>> for Saturating<isize>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u8>> for &Saturating<u8>
impl Sub<&Saturating<u8>> for &Saturating<u8>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u8>> for Saturating<u8>
impl Sub<&Saturating<u8>> for Saturating<u8>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u16>> for &Saturating<u16>
impl Sub<&Saturating<u16>> for &Saturating<u16>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u16>> for Saturating<u16>
impl Sub<&Saturating<u16>> for Saturating<u16>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u32>> for &Saturating<u32>
impl Sub<&Saturating<u32>> for &Saturating<u32>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u32>> for Saturating<u32>
impl Sub<&Saturating<u32>> for Saturating<u32>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u64>> for &Saturating<u64>
impl Sub<&Saturating<u64>> for &Saturating<u64>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u64>> for Saturating<u64>
impl Sub<&Saturating<u64>> for Saturating<u64>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u128>> for &Saturating<u128>
impl Sub<&Saturating<u128>> for &Saturating<u128>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<u128>> for Saturating<u128>
impl Sub<&Saturating<u128>> for Saturating<u128>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<usize>> for &Saturating<usize>
impl Sub<&Saturating<usize>> for &Saturating<usize>
1.74.0 (const: unstable) · Source§impl Sub<&Saturating<usize>> for Saturating<usize>
impl Sub<&Saturating<usize>> for Saturating<usize>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<i8>> for &Saturating<i8>
impl Sub<Saturating<i8>> for &Saturating<i8>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<i16>> for &Saturating<i16>
impl Sub<Saturating<i16>> for &Saturating<i16>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<i32>> for &Saturating<i32>
impl Sub<Saturating<i32>> for &Saturating<i32>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<i64>> for &Saturating<i64>
impl Sub<Saturating<i64>> for &Saturating<i64>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<i128>> for &Saturating<i128>
impl Sub<Saturating<i128>> for &Saturating<i128>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<isize>> for &Saturating<isize>
impl Sub<Saturating<isize>> for &Saturating<isize>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<u8>> for &Saturating<u8>
impl Sub<Saturating<u8>> for &Saturating<u8>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<u16>> for &Saturating<u16>
impl Sub<Saturating<u16>> for &Saturating<u16>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<u32>> for &Saturating<u32>
impl Sub<Saturating<u32>> for &Saturating<u32>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<u64>> for &Saturating<u64>
impl Sub<Saturating<u64>> for &Saturating<u64>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<u128>> for &Saturating<u128>
impl Sub<Saturating<u128>> for &Saturating<u128>
1.74.0 (const: unstable) · Source§impl Sub<Saturating<usize>> for &Saturating<usize>
impl Sub<Saturating<usize>> for &Saturating<usize>
1.8.0 · Source§impl Sub<Duration> for SystemTime
impl Sub<Duration> for SystemTime
type Output = SystemTime
Source§impl<'a> Sub<EdwardsPoint> for &'a EdwardsPoint
impl<'a> Sub<EdwardsPoint> for &'a EdwardsPoint
type Output = EdwardsPoint
Source§impl<'a> Sub<RistrettoPoint> for &'a RistrettoPoint
impl<'a> Sub<RistrettoPoint> for &'a RistrettoPoint
type Output = RistrettoPoint
Source§impl<'a, 'b> Sub<&'b EdwardsPoint> for &'a EdwardsPoint
impl<'a, 'b> Sub<&'b EdwardsPoint> for &'a EdwardsPoint
type Output = EdwardsPoint
Source§impl<'a, 'b> Sub<&'b RistrettoPoint> for &'a RistrettoPoint
impl<'a, 'b> Sub<&'b RistrettoPoint> for &'a RistrettoPoint
type Output = RistrettoPoint
Source§impl<'a, 'b> Sub<&'b AffineNielsPoint> for &'a EdwardsPoint
impl<'a, 'b> Sub<&'b AffineNielsPoint> for &'a EdwardsPoint
Source§impl<'a, 'b> Sub<&'b ProjectiveNielsPoint> for &'a EdwardsPoint
impl<'a, 'b> Sub<&'b ProjectiveNielsPoint> for &'a EdwardsPoint
Source§impl<'b> Sub<&'b EdwardsPoint> for EdwardsPoint
impl<'b> Sub<&'b EdwardsPoint> for EdwardsPoint
type Output = EdwardsPoint
Source§impl<'b> Sub<&'b RistrettoPoint> for RistrettoPoint
impl<'b> Sub<&'b RistrettoPoint> for RistrettoPoint
type Output = RistrettoPoint
Source§impl<Ul, Bl, Ur> Sub<Ur> for UInt<Ul, Bl>
Subtracting unsigned integers. We just do our PrivateSub
and then Trim
the output.
impl<Ul, Bl, Ur> Sub<Ur> for UInt<Ul, Bl>
Subtracting unsigned integers. We just do our PrivateSub
and then Trim
the output.