Smalltalk-78 on lively-web.org x . "at:put:, yourself" ↪(1 2 3) ◦ 2 ← 100; itself "⇒ (1 100 3 ) ". "atLast:put:" ↪(1 2 3) last ← 100; itself "⇒ (1 2 100 ) ". "replaceFrom:to:with:" ↪(1 2 3 4 5 6) ◦ (2 to: 3) ← ↪(20 30); itself "⇒ (1 20 30 …