1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
//! This crate adds an extension method to the integers that permits //! to iterate over their digits. //! //! Note that the signed integers will be casted to the corresponding unsigned //! integers. Do not use this iterator with negative signed integers unless you //! *really* want to iterate over the digits of the complement. //! //! To use this extension, add the crate and import its content: //! //! ``` //! extern crate digits_iterator; //! use digits_iterator::*; //! ``` //! //! # Examples //! //! ```rust //! use digits_iterator::*; //! //! let digits: Vec<_> = 2018_u32.digits().collect(); //! assert_eq!(digits[..], [2, 0, 1, 8]); //! //! let digits: Vec<_> = 0b101010.digits_with_base(2).collect(); //! assert_eq!(digits[..], [1_u8, 0, 1, 0, 1, 0]); //! ``` #![deny(missing_docs)] #[cfg(test)] mod tests; mod int; use int::Int; mod digits; use digits::Digits; /// Adds the extension methods to iterate over the digits of integers. pub trait DigitsExtension: Int { /// Iterates over the digits of self in decimal base. /// /// # Example /// /// ``` /// use digits_iterator::*; /// /// let n = 2018_u32; /// let digits: Vec<_> = n.digits().collect(); /// /// assert_eq!(digits, [2, 0, 1, 8]); /// ``` fn digits(self) -> Digits<Self> { Digits::new(self) } /// Iterates over the digits of self in a base between 2 and 36. /// /// # Example /// /// ``` /// use digits_iterator::*; /// /// let n = 0b100101_u32; /// let digits: Vec<_> = n.digits_with_base(2).collect(); /// /// assert_eq!(digits, [1, 0, 0, 1, 0, 1]); /// ``` fn digits_with_base(self, base: u32) -> Digits<Self> { Digits::with_base(self, base) } } impl<T> DigitsExtension for T where T: Int, { }