merge two arrays together in Ruby

  arr1 = [1, 2, 3]
  arr2 = [4, 5, 6]
  arr3 = arr1 + arr2

This code snippet combines two arrays together in Ruby. The first two lines establish the two arrays being merged. The third line uses the ’+’ operator to add the two arrays together into a third array (arr3). The result is arr3, which contains all the elements of arr1 and arr2 combined in the same order they were in before. This code will be helpful when merging two collections of data together, such as when adding items from one data set to another.