Trait num_digitize::FromDigits
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[src]
pub trait FromDigits<N> where N: FromIterRadix, Self: Sized + IntoIterator<Item=N> { fn from_digits(self) -> i64 { ... } }
Provided Methods
fn from_digits(self) -> i64
Converts iterable of digits back to the original number. This does not currently work for slices.
Example
Basic usage:
use num_digitize::FromDigits; let vector = vec![1, 2, 3, 4, 5]; let number = 12345; assert_eq!(vector.from_digits(), number);
Negative numbers:
use num_digitize::FromDigits; let vector = vec![-1, -2, -3, -4, -5]; let number = -12345; assert_eq!(vector.from_digits(), number);
It works like this:
text [-1, -2, -3] (-1 * 10^2) + (-2 * 10^1) + (-3 * 10^0) = -123
Please note, all of the digits have to be negative in order to get the correct number back.
Also note, if you use this on vector of larger numbers (> 9 or < -9), the results will be wrong.
See ToDigits
trait for details.
Implementors
impl<I, N> FromDigits<N> for I where N: FromIterRadix, I: IntoIterator<Item=N>