Ruby | Enumerable detect() function

The detect() of enumerable is an inbuilt method in Ruby returns the first element which satisfies the given condition in the block. If there is no block, then it returns the enumerator itself.

Syntax: block.detect { |obj| block }

Parameters: The function takes the block according to which the first which satisfies is to be returned.



Return Value: It returns the first element which satisfies the block or the enumerator instead.

Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Ruby program for detect method in Enumerable
  
# Initialize
enu = (1..50)
  
# returns first element 
enu.detect { |el|  el % 2 == 0 && el % 9 == 0}

chevron_right


Output:

18

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

# Ruby program for detect method in Enumerable
  
# Initialize
enu = (1..50)
  
# returns enumerator
enu.detect

chevron_right


Output:

Enumerator: 1..50:detect


My Personal Notes arrow_drop_up

The function of education is to teach one to think intensively and to think critically

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.