Trait hypernums::convert::IntoAscii
[−]
[src]
pub trait IntoAscii {
fn digits10(self) -> usize;
fn int_to_bytes(self, buff: &mut [u8]);
fn itoa(&self) -> Vec<u8>
where
Self: Copy,
{ ... }
}This trait converts integers to bytes.
Required Methods
fn digits10(self) -> usize
Returns the size of an integer. This is how many digits the integer has.
fn int_to_bytes(self, buff: &mut [u8])
Performs the actual convertion. It fills the given buff with bytes.
Due to how the algorithm works, the last elements of the buffer get written to first.
The buffer should have a size such that it can hold all the bytes.
To get the size of an integer would take, use digits10().
Examples
extern crate hypernums; use hypernums::convert::IntoAscii; fn main() { let mut v = vec![0, 0, 0, 0, 0]; 12345u32.int_to_bytes(&mut v); assert_eq!(v, [b'1', b'2', b'3', b'4', b'5']); 54321u64.int_to_bytes(&mut v); assert_eq!(v, [b'5', b'4', b'3', b'2', b'1']); // if the buffer is larger than the number of digits, it fills with 0. 123u8.int_to_bytes(&mut v); assert_eq!(v, [b'0', b'0', b'1', b'2', b'3']); // use slicing to collect 2 numbers into the buffer: 12u8.int_to_bytes(&mut v[..2]); 648u32.int_to_bytes(&mut v[2..]); assert_eq!(v, [b'1', b'2', b'6', b'4', b'8']); }
Provided Methods
fn itoa(&self) -> Vec<u8> where
Self: Copy,
Self: Copy,
The function performing the convertion.
Examples
extern crate hypernums; use hypernums::convert::IntoAscii; fn main() { assert_eq!(12345u32.itoa(), [b'1', b'2', b'3', b'4', b'5']); }