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[ruby/en] Update ruby.md by adding array method #5360

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[ruby/en] Update ruby.md by adding array method #5360

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2 changes: 2 additions & 0 deletions ruby.md
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Original file line number Diff line number Diff line change
Expand Up @@ -216,6 +216,8 @@ array.[] 12 #=> nil
array << 6 #=> [1, 2, 3, 4, 5, 6]
# Or like this
array.push(6) #=> [1, 2, 3, 4, 5, 6]
# Or even like this
array.append(6) #=> [1, 2, 3, 4, 5, 6]

# ...and check if an item exists in an array
array.include?(1) #=> true
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