How to Check if String contains only Alphabets and Numbers in Ruby - Step by Step Examples

How to Check if String contains only Alphabets and Numbers in Ruby ?

Answer

To check if a string contains only alphabets and numbers in Ruby, you can use regular expressions with the match? method.

✐ Examples

1 Check if String contains only Alphabets and Numbers using regular expression

In this example,

We create a regular expression pattern that matches alphabets and numbers only.
We use the match? method of the string object with the regular expression pattern to check if the string matches the pattern.
If the string contains only alphabets and numbers, match_alphabets_and_numbers will be true, otherwise false.
Finally, we print the result.

Ruby Program

str = "Hello123"
pattern = /^[a-zA-Z0-9]+$/
match_alphabets_and_numbers = !!(str.match?(pattern))
puts "String contains only alphabets and numbers: #{match_alphabets_and_numbers}"

Output

String contains only alphabets and numbers: true

Summary

In this tutorial, we learned How to Check if String contains only Alphabets and Numbers in Ruby language with well detailed examples.

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