String

Part of the Fundamentals section of Coddy's Rust journey — lesson 7 of 75.

A char is a single character (For example: 1, 6, %, b, p, ., T, etc.)

The String type is a special type that consists of multiple chars.

To initialize a string value in a variable, enclose it within double quotation marks:

let s1 = "This is a string";

In the above example, a string variable named s1 is initialized.

Unlike with numbers, when working with strings we need to be more careful with types.

If you want to explicitly declare a String type, you need to convert the string like this:

let s1: String = "This is a string".to_string();

Challenge

Beginner

Store the string I am learning to code with Coddy! in a variable named coddy using a string literal (with double quotes)..

Be sure to store the exact string value with correct casing.

Cheat sheet

A char is a single character (e.g., 1, 6, %, b, p, ., T).

A String consists of multiple chars. Initialize strings using double quotation marks:

let s1 = "This is a string";

To explicitly declare a String type, convert the string literal:

let s1: String = "This is a string".to_string();

Try it yourself

fn main() {
    // Type your code below
    let coddy = ?
    
    // Don't change the line below
    println!("coddy = \"{}\"", coddy);
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

1Introduction

Rust Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Arithmetic Shortcuts Comparison Operators String Comparison

7Basic IO

Printing to Console Reading User Input Recap - Till 120 Recap - True or False

10Variable Bindings

Scope Shadowing Part 1 Variable Binding Shadowing Part 2

13Arrays Continued

Mutable Reference Arrays Array Methods Recap - Product Array Recap - Reversed Array Better Print

16Final Projects

Number Pattern Pattern Finder Student Grade Calculator

2Variables Part 1

Numbers Char StringBoolean Mutable Variables

5Operators Part 2

Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3

8Calculator App

Welcome Message Getting Numbers

Basic Operations

Formatted Output

11Functions

Declaring Functions Parameters and Arguments Return Values Multiple Return Values Recap - Sigma Function Recap - Validation Function

14Iterating Over Arrays

Range Guide Enhanced For Loop Borrow In Loop Common Array Operations

3Variables Part 2

Type Declaration Naming Conventions Type Inference Recap - Initialize Variables Type Casting

6Decision Making

If Expressions If-Else Match Statement Recap - If Else Nested If - Else

9Loops

For Over Series While Loop Break Continue Nested Loop Loop Labels Infinite Loop Recap - Dynamic Input

12Arrays Basics

Declaring Arrays Array as Parameter Accessing Elements Modifying Arrays Recap - Pretty Print Array

15String Operations

String Methods format! Macro String Conversion Recap - Format