# [−] [src] Trait num_traits::cast::ToPrimitive

    pub trait ToPrimitive {
        fn to_i64(&self) -> Option<i64>;
        fn to_u64(&self) -> Option<u64>;

        fn to_isize(&self) -> Option<isize> { ... }
        fn to_i8(&self) -> Option<i8> { ... }
        fn to_i16(&self) -> Option<i16> { ... }
        fn to_i32(&self) -> Option<i32> { ... }
        fn to_i128(&self) -> Option<i128> { ... }
        fn to_usize(&self) -> Option<usize> { ... }
        fn to_u8(&self) -> Option<u8> { ... }
        fn to_u16(&self) -> Option<u16> { ... }
        fn to_u32(&self) -> Option<u32> { ... }
        fn to_u128(&self) -> Option<u128> { ... }
        fn to_f32(&self) -> Option<f32> { ... }
        fn to_f64(&self) -> Option<f64> { ... }
    }

A generic trait for converting a value to a number.

## Required methods

### `fn to_i64(&self) -> Option<i64>`

Converts the value of `self` to an `i64`.

### `fn to_u64(&self) -> Option<u64>`

Converts the value of `self` to an `u64`.

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## Provided methods

### `fn to_isize(&self) -> Option<isize>`

Converts the value of `self` to an `isize`.

### `fn to_i8(&self) -> Option<i8>`

Converts the value of `self` to an `i8`.

### `fn to_i16(&self) -> Option<i16>`

Converts the value of `self` to an `i16`.

### `fn to_i32(&self) -> Option<i32>`

Converts the value of `self` to an `i32`.

### `fn to_i128(&self) -> Option<i128>`

Converts the value of `self` to an `i128`.

This method is only available with feature `i128` enabled on Rust >= 1.26.

The default implementation converts through `to_i64()`. Types implementing this trait should override this method if they can represent a greater range.

### `fn to_usize(&self) -> Option<usize>`

Converts the value of `self` to a `usize`.

### `fn to_u8(&self) -> Option<u8>`

Converts the value of `self` to an `u8`.

### `fn to_u16(&self) -> Option<u16>`

Converts the value of `self` to an `u16`.

### `fn to_u32(&self) -> Option<u32>`

Converts the value of `self` to an `u32`.

### `fn to_u128(&self) -> Option<u128>`

Converts the value of `self` to an `u128`.

This method is only available with feature `i128` enabled on Rust >= 1.26.

The default implementation converts through `to_u64()`. Types implementing this trait should override this method if they can represent a greater range.

### `fn to_f32(&self) -> Option<f32>`

Converts the value of `self` to an `f32`.

### `fn to_f64(&self) -> Option<f64>`

Converts the value of `self` to an `f64`.

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## Implementations on Foreign Types

### `impl ToPrimitive for isize` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for i8` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for i16` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for i32` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for i64` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for i128` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for usize` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for u8` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for u16` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for u32` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for u64` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for u128` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for f32` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl ToPrimitive for f64` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

### `impl<T: ToPrimitive> ToPrimitive for Wrapping<T>` [src]

#### `fn to_isize(&self) -> Option<isize>` [src]

#### `fn to_i8(&self) -> Option<i8>` [src]

#### `fn to_i16(&self) -> Option<i16>` [src]

#### `fn to_i32(&self) -> Option<i32>` [src]

#### `fn to_i64(&self) -> Option<i64>` [src]

#### `fn to_i128(&self) -> Option<i128>` [src]

#### `fn to_usize(&self) -> Option<usize>` [src]

#### `fn to_u8(&self) -> Option<u8>` [src]

#### `fn to_u16(&self) -> Option<u16>` [src]

#### `fn to_u32(&self) -> Option<u32>` [src]

#### `fn to_u64(&self) -> Option<u64>` [src]

#### `fn to_u128(&self) -> Option<u128>` [src]

#### `fn to_f32(&self) -> Option<f32>` [src]

#### `fn to_f64(&self) -> Option<f64>` [src]

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## Implementors

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