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Throw
Throw[
value
] stops evaluation and returns value as the value of the nearest enclosing Catch.
Throw[
value
,
tag
] is caught only by Catch[
expr
,
form
] where form is a pattern that matches tag.
You can use Throw and Catch to exit functions such as Nest, Fold, FixedPoint and Scan.
tag can be any expression.
tag in Throw[
value
,
tag
] is re-evaluated every time it is compared to form in Catch[
expr
,
form
].
An error is generated and an unevaluated Throw is returned if there is no appropriate enclosing Catch to catch the Throw.
See the Mathematica book: Section 2.5.9.
See also: Return, Goto, Interrupt, Abort.
Further Examples
This definition makes g throw overflow if its argument is greater than 10.
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