ruby append to array
array = []
array << "element 1"
array.append "element 2"
puts array
# ["element 1", "element 2"]
ruby append to array
array = []
array << "element 1"
array.append "element 2"
puts array
# ["element 1", "element 2"]
ruby push array
array = [1, 2, 3, 4]
array.push(5)
array # => [1, 2, 3, 4, 5]
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