Animate the text in your terminal

[tkellehe]

Animate the text in your terminal

22 bytes

”<8@\|DḶ|\6þıHḶƥɲSḍsɲS

My answer

Try it:)

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”<8@\|DḶ|\6þ           # Displays the string "hello¤world".
”<8@\|DḶ|\6            # Decompresses to the array ["h", "e", "l", "l", "o", "¤", "w", "o", "r", "l", "d"] and pushes it on top of the stack.
           þ           # Pushes a copy of the array to the screen which since is an array is done by reference.

            ı          # Makes the array on the top of the stack the new stack.

             HḶƥɲSḍsɲS # Loops eleven times creating the animation.
             H         # Pushes the string "H" on to the top of the stack.
              Ḷ        # Consumes the "H" that gets evaluated as a base 98 number which comes out to eleven.
               ƥ       # Move the stack pointer up one.
                ɲS     # Switch the case of the top of the stack which will show up on the screen because the array is done by reference.
                  ḍs   # Delay for one second.
                    ɲS # Switch the case back.
                       # Implicit end of the loop.