add_uniq_value_to_array.md
March 20, 2016 ยท View on GitHub
How to add uniq value to array
array = [1, 2, 3]
bad
array << 2
array << 4
# Result:
# [1, 2, 3, 2, 4]
p array.uniq
# Result:
# [1, 2, 3, 4]
good (but need refactor)
array = array | [2]
array = array | [4]
p array
# Result:
# [1, 2, 3, 4]
good
array |= [2, 4]
p array
# Result:
# [1, 2, 3, 4]