Trait TupleLength

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pub trait TupleLength {
    const LENGTH: usize;
}
Available on crate feature length only.
Expand description

A tuple with a known length.

use tupleops::TupleLength;

assert_eq!(0, <() as TupleLength>::LENGTH);

assert_eq!(1, <(u8,) as TupleLength>::LENGTH);

assert_eq!(2, <(u8, u16) as TupleLength>::LENGTH);

assert_eq!(3, <(u8, u16, u32) as TupleLength>::LENGTH);

See also: length().

Required Associated Constants§

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const LENGTH: usize

The number of elements in this tuple

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§

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impl TupleLength for ()

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const LENGTH: usize = 0usize

Available on crate feature length only.
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impl<I1> TupleLength for (I1,)

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const LENGTH: usize = 1usize

Available on crate feature length only.
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impl<I1, I2> TupleLength for (I1, I2)

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const LENGTH: usize = 2usize

Available on crate feature length only.
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impl<I1, I2, I3> TupleLength for (I1, I2, I3)

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const LENGTH: usize = 3usize

Available on crate feature length only.
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impl<I1, I2, I3, I4> TupleLength for (I1, I2, I3, I4)

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const LENGTH: usize = 4usize

Available on crate feature length only.
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impl<I1, I2, I3, I4, I5> TupleLength for (I1, I2, I3, I4, I5)

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const LENGTH: usize = 5usize

Available on crate feature length only.
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impl<I1, I2, I3, I4, I5, I6> TupleLength for (I1, I2, I3, I4, I5, I6)

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const LENGTH: usize = 6usize

Available on crate feature length only.
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impl<I1, I2, I3, I4, I5, I6, I7> TupleLength for (I1, I2, I3, I4, I5, I6, I7)

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const LENGTH: usize = 7usize

Available on crate feature length only.
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impl<I1, I2, I3, I4, I5, I6, I7, I8> TupleLength for (I1, I2, I3, I4, I5, I6, I7, I8)

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const LENGTH: usize = 8usize

Available on crate feature length only.

Implementors§