Trait Substring

pub trait Substring {
    // Required method
    fn substring(&self, start_index: usize, end_index: usize) -> &str;
}

Provides a substring() method.

The substring() method obtains a string slice of characters within the range specified by start_index and end_index.

Required Methods

fn substring(&self, start_index: usize, end_index: usize) -> &str

Obtains a string slice containing the characters within the range specified by start_index and end_index.

The range specified is a character range, not a byte range.

Implementations on Foreign Types

impl Substring for str

Implements a substring() method for str.

Note that structs which implement Deref<Target=str> (such as String) will also have access to this implementation.

fn substring(&self, start_index: usize, end_index: usize) -> &str

Obtain a slice of the characters within the range of start_index and end_index.

As this is by character index, rather than byte index, the temporal complexity of finding a substring is O(n), where n is the byte length of the string.

Example:

use substring::Substring;

assert_eq!("foobar".substring(2,5), "oba");

Implementors