How to Replace a Substring in String in Ruby - Step by Step Examples

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How to Replace a Substring in String in Ruby ?

Answer

To replace a substring in a string in Ruby, you can use the `gsub()` method or regular expressions.

✐ Examples

1 Replace 'World' with 'Universe' in "Hello World"

In this example,

We create a string named str with a value of "Hello World".
We use the gsub() method to replace the substring "World" with "Universe".
Finally, we print the modified string str.

Ruby Program

str = "Hello World"
str.gsub!(/World/, 'Universe')
puts str

Output

Hello Universe

Summary

In this tutorial, we learned How to Replace a Substring in String in Ruby language with well detailed examples.