func:flatten

flatten(list)

Flatten a list to a single level. If given a list of grids, then flatten rows to a single grid. Also see List.flatten and Etc.gridFlatten.

Examples:

// flatten a list of numbers
[1, [2, 3], [4, [5, 6]]].flatten  >>  [1, 2, 3, 4, 5, 6]

// flatten a list of grids
["Carytown", "Gaithersburg"].map(n=>readAll(siteRef->dis==n)).flatten