C = copy (S, D) places a copy of the shape moved by each row of D, an N-by-3 matrix of offsets in millimetres, and returns them as one shape, united as solid.Shape.union unites shapes. The shape itself is among them only where a row of D is zero. Copies apart from one another are kept side by side, separate solids of the one shape, with no boolean to compute; only copies that overlap or touch are fused, so a hundred pins standing apart cost little more than one. This is OpenSCAD’s for loop of translate.

 ## Four pins on the corners of a square, one shape of four solids
 P = copy (solid.cylinder (2, 10), ...
           [0, 0, 0; 30, 0, 0; 0, 30, 0; 30, 30, 0]);
 numsolids (P)
 ⇒ 4

See also: solid.Shape.rectarray, solid.Shape.polararray, geom.Region.copy

Source Code: solid.Shape