Difference between select and collect [closed]

Question

Can't understand the difference between select and collect methods. Also want to know when to use each.

Answer 1

Enumerable#collect (or Enumerable#map) returns a result of applying block to each items.

[1, 2, 3, 4].collect { |x| x > 2 }
# => [false, false, true, true]

While Enumerable#select returns an array of filtered items:

[1, 2, 3, 4].select { |x| x > 2 }
# => [3, 4]