# [−] [src] Trait typenum::type_operators::Len

    pub trait Len {
        type Output: Unsigned;
        fn len(&self) -> Self::Output;
    }

A type operator that gives the length of an `Array` or the number of bits in a `UInt`.

## Associated Types

### `type Output: Unsigned` [src]

The length as a type-level unsigned integer.

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## Required methods

### `fn len(&self) -> Self::Output` [src]

This function isn't used in this crate, but may be useful for others.

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## Implementors

### `impl Len for ATerm` [src]

Length of `ATerm` by itself is 0

#### `type Output = U0`

#### `fn len(&self) -> Self::Output` [src]

### `impl Len for UTerm` [src]

Length of `UTerm` by itself is 0

#### `type Output = U0`

#### `fn len(&self) -> Self::Output` [src]

### `impl<U: Unsigned, B: Bit> Len for UInt<U, B> where
U: Len,
Length<U>: Add<B1>,
Add1<Length<U>>: Unsigned,` [src]

Length of a bit is 1

#### `type Output = Add1<Length<U>>`

#### `fn len(&self) -> Self::Output` [src]

### `impl<V, A> Len for TArr<V, A> where
A: Len,
Length<A>: Add<B1>,
Sum<Length<A>, B1>: Unsigned,` [src]

Size of a `TypeArray`

#### `type Output = Add1<Length<A>>`

#### `fn len(&self) -> Self::Output` [src]

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