Array.$CELLS()
Array.$CELLS(Function|Array of Functions[,param1,param2,...])
Apply a function (first parameter), to cell addresses (last parameter as an array), with all other as parameters, and return the array.
a=|4|.fillwith(1..100); a.$CELLS(SIN,[0,1,2,2])
1 0.9092974268256817 0.1411200080598672 4 5 -0.27941549819892586 0.6569865987187891 8 9 10 11 12 13 14 15 16