Trait ExtString 

pub trait ExtString {
    // Required methods
    fn reverse(&self) -> String;
    fn pad_left(&self, pad_len: usize, c: char) -> String;
    fn pad_right(&self, pad_len: usize, c: char) -> String;
    fn pad_left_str(&self, pad_len: usize, s: &str) -> String;
    fn pad_right_str(&self, pad_len: usize, s: &str) -> String;
    fn is_numeric(&self) -> bool;
    fn is_alphabetic(&self) -> bool;
    fn is_alphanumeric(&self) -> bool;
    fn swap_case(&self) -> String;
}

The trait that adds functionality to the String struct.

Required Methods

fn reverse(&self) -> String

Reverses order of characters

fn pad_left(&self, pad_len: usize, c: char) -> String

Pads the left side of a string by repeating the same character until ‘pad_len’ is reached. If pad_len is shorter or equal to the character length, a simple cloned string will be returned.

fn pad_right(&self, pad_len: usize, c: char) -> String

Pads the right side of a string by repeating the same character until ‘pad_len’ is reached. If pad_len is shorter or equal to the character length, a simple cloned string will be returned.

fn pad_left_str(&self, pad_len: usize, s: &str) -> String

Pads the left side of a string by repeating the same string slice until ‘pad_len’ is reached. If pad_len is shorter or equal to the character length, a simple cloned string will be returned.

fn pad_right_str(&self, pad_len: usize, s: &str) -> String

Pads the right side of a string by repeating the same string slice until ‘pad_len’ is reached. If pad_len is shorter or equal to the character length, a simple cloned string will be returned.

fn is_numeric(&self) -> bool

Checks that all characters in a string are numeric characters.

fn is_alphabetic(&self) -> bool

Checks that all characters in a string are alphabetic characters.

fn is_alphanumeric(&self) -> bool

Checks that all characters in a string are either numeric or alphabetic.

fn swap_case(&self) -> String

Swaps upper case characters to lower case and vice versa.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl ExtString for String

fn reverse(&self) -> String

Reverses order of characters

fn pad_left(&self, pad_len: usize, c: char) -> String

Pads the left side of a string by repeating the same character until ‘pad_len’ is reached. If pad_len is shorter or equal to the character length, a simple cloned string will be returned.

fn pad_right(&self, pad_len: usize, c: char) -> String

Pads the right side of a string by repeating the same character until ‘pad_len’ is reached. If pad_len is shorter or equal to the character length, a simple cloned string will be returned.

fn is_numeric(&self) -> bool

Checks that all characters in a string are numeric characters.

fn is_alphabetic(&self) -> bool

Checks that all characters in a string are alphabetic characters.

fn pad_left_str(&self, pad_len: usize, s: &str) -> String

fn pad_right_str(&self, pad_len: usize, s: &str) -> String

fn is_alphanumeric(&self) -> bool

fn swap_case(&self) -> String

Implementors