Combinatorists do it discretely. Combinatorists do it as many ways as they can. Commutative algebraists do it regularly. Complex analysts do it between the sheets. Complex analysts do it under a universal cover.
Complex analysts do it with imaginary parts.
Computer scientists do it depth-first. Constructivists do it without excluding the middle. Cosmologists do it in the first three minutes. Decision theorists do it optimally. Differential analysts do it in a degenerate case.