What is the string.replace() method in Rust?

Overview

In Rust, we can replace the content of a string with the replace() method. This method replaces a specified match with another string.

Syntax

Parameters

• string: This is the string whose substring we want to replace.

• match: This is the match we want to find and replace.

• substring: This is the replacement for the match we find.

Return value

This method returns a new string with every match replaced. If no match is found, the string remains the same.

Code example

Explanation

• Lines 2–5: We create some strings.

• Lines 8–11: We replace some sub-strings of the strings we created using the replace() method. Then, we print the results to the console.

Output

• For first example: the word better is replaced by best at every occurrence.

• For second example: boring is replaced by interesting.

• For the third and fourth examples: there wasn’t any match so the string is returned as it was.