Switch

Usage

• Switch[expr, , , , , ... ] evaluates expr, then compares it with each of the in turn, evaluating and returning the corresponding to the first match found.

Notes

• Only the

corresponding to the first

that matches expr is evaluated. Each

is evaluated only when the match is tried.

• If the last

is the pattern _, then the corresponding

is always returned if this case is reached.

• If none of the

match expr, the Switch is returned unevaluated.

• Switch has attribute HoldRest.

• You can use Break, Return and Throw in Switch.

• See Section 2.6.8.

• See also: If, Condition, Which, Piecewise.

• New in Version 1.

Further Examples