How to get Substring between two Specific Characters in Ruby - Step by Step Examples

How to get Substring between two Specific Characters in Ruby ?

Answer

To get a substring between two specific characters in Ruby, you can use a regular expression with the scan method or the match method of the String class.

✐ Examples

1 Substring between '(' and ')' in "(Hello) World!"

In this example,

We create a string named str with a value of "(Hello) World!".
We then define a regular expression pattern to match the content between the characters '(' and ')'. The pattern /\((.*?)\)/ uses the escaped parentheses \( and \) to match the literal '(' and ')' characters. The .*? is a non-greedy match for any characters between them.
We use the scan method on str with the defined pattern to find all matches. The scan method returns an array of all matching substrings.
We take the first match from the result array to get our desired substring.
Finally, we print the extracted substring to the standard output.

Ruby Program

str = "(Hello) World!"
pattern = /\((.*?)\)/
substring = str.scan(pattern).flatten.first
puts "Substring between '(' and ')' is: #{substring}"

Output

Substring between '(' and ')' is: Hello

2 Substring between '[' and ']' in "Ruby [is] awesome!"

In this example,

We create a string named str with a value of "Ruby [is] awesome!".
We then define a regular expression pattern to match the content between the characters '[' and ']'. The pattern /\[(.*?)\]/ uses the escaped square brackets \[ and \] to match the literal '[' and ']' characters. The .*? is a non-greedy match for any characters between them.
We use the scan method on str with the defined pattern to find all matches. The scan method returns an array of all matching substrings.
We take the first match from the result array to get our desired substring.
Finally, we print the extracted substring to the standard output.

Ruby Program

str = "Ruby [is] awesome!"
pattern = /\[(.*?)\]/
substring = str.scan(pattern).flatten.first
puts "Substring between '[' and ']' is: #{substring}"

Output

Substring between '[' and ']' is: is

3 Substring between '{' and '}' in "Find {the} substring"

In this example,

We create a string named str with a value of "Find {the} substring".
We then define a regular expression pattern to match the content between the characters '{' and '}'. The pattern /\{(.*?)\}/ uses the escaped curly braces \{ and \} to match the literal '{' and '}' characters. The .*? is a non-greedy match for any characters between them.
We use the scan method on str with the defined pattern to find all matches. The scan method returns an array of all matching substrings.
We take the first match from the result array to get our desired substring.
Finally, we print the extracted substring to the standard output.

Ruby Program

str = "Find {the} substring"
pattern = /\{(.*?)\}/
substring = str.scan(pattern).flatten.first
puts "Substring between '{' and '}' is: #{substring}"

Output

Substring between '{' and '}' is: the

Summary

In this tutorial, we learned How to get Substring between two Specific Characters in Ruby language with well detailed examples.

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How to get Substring between two Specific Characters in Ruby - Step by Step Examples

How to get Substring between two Specific Characters in Ruby ?

Answer

✐ Examples

1 Substring between '(' and ')' in "(Hello) World!"

Ruby Program

Output

2 Substring between '[' and ']' in "Ruby [is] awesome!"

Ruby Program

Output

3 Substring between '{' and '}' in "Find {the} substring"

Ruby Program

Output

Summary

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