ruby find object in array code example

Example 1: ruby find in array

(1..10).detect   { |i| i % 5 == 0 and i % 7 == 0 }   #=> nil
(1..10).find     { |i| i % 5 == 0 and i % 7 == 0 }   #=> nil
(1..100).detect  { |i| i % 5 == 0 and i % 7 == 0 }   #=> 35
(1..100).find    { |i| i % 5 == 0 and i % 7 == 0 }   #=> 35

Example 2: ruby find object in array by attribute

# Use select to get all objects in an array that match your criteria
my_array.select { |obj| obj.attr == 'value' }

# find_all and filter (in Ruby 2.6+) are aliases for select
my_array.find_all { |obj| obj.attr == 'value' }
my_array.filter { |obj| obj.attr == 'value' }

# Use find to get the first object in an array that matches your criteria
my_array.find { |obj| obj.attr == 'value' }