[ Sequence ] fill: [ Number ] with: [ Object ]

☞ x ≔ Sequence new
fill: 10 with: ‘X’.
✎ write: x, stop.
Sequence ← ‘X’ ; ‘X’ ; ‘X’ ; ‘X’ ; ‘X’ ; ‘X’ ; ‘X’ ; ‘X’ ; ‘X’ ; ‘X’