CheckedShl in num_traits::ops::checked - Rust
Description: Performs a left shift that returns `None` on shifts larger than the type width.
Keywords: rust, rustlang, rust-lang, CheckedShl

# Trait num_traits::ops::checked::CheckedShl

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    pub trait CheckedShl: Sized + Shl<u32, Output = Self> {
        fn checked_shl(&self, rhs: u32) -> Option<Self>;
    }

Expand description

Performs a left shift that returns `None` on shifts larger than the type width.

## Required Methods§

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#### fn checked_shl(&self, rhs: u32) -> Option<Self>

Checked shift left. Computes `self << rhs`, returning `None` if `rhs` is larger than or equal to the number of bits in `self`.

    use num_traits::CheckedShl;

    let x: u16 = 0x0001;

    assert_eq!(CheckedShl::checked_shl(&x, 0),  Some(0x0001));
    assert_eq!(CheckedShl::checked_shl(&x, 1),  Some(0x0002));
    assert_eq!(CheckedShl::checked_shl(&x, 15), Some(0x8000));
    assert_eq!(CheckedShl::checked_shl(&x, 16), None);

## Implementations on Foreign Types§

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### impl CheckedShl for u8

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#### fn checked_shl(&self, rhs: u32) -> Option<u8>

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### impl CheckedShl for u16

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#### fn checked_shl(&self, rhs: u32) -> Option<u16>

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### impl CheckedShl for u32

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#### fn checked_shl(&self, rhs: u32) -> Option<u32>

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### impl CheckedShl for u64

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#### fn checked_shl(&self, rhs: u32) -> Option<u64>

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### impl CheckedShl for usize

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#### fn checked_shl(&self, rhs: u32) -> Option<usize>

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### impl CheckedShl for u128

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#### fn checked_shl(&self, rhs: u32) -> Option<u128>

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### impl CheckedShl for i8

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#### fn checked_shl(&self, rhs: u32) -> Option<i8>

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### impl CheckedShl for i16

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#### fn checked_shl(&self, rhs: u32) -> Option<i16>

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### impl CheckedShl for i32

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#### fn checked_shl(&self, rhs: u32) -> Option<i32>

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### impl CheckedShl for i64

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#### fn checked_shl(&self, rhs: u32) -> Option<i64>

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### impl CheckedShl for isize

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#### fn checked_shl(&self, rhs: u32) -> Option<isize>

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### impl CheckedShl for i128

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#### fn checked_shl(&self, rhs: u32) -> Option<i128>

## Implementors§