collectException

Catches and returns the exception thrown from the given expression. If no exception is thrown, then null is returned. E can be void.

Note that while collectException can be used to collect any Throwable and not just Exceptions, it is generally ill-advised to catch anything that is neither an Exception nor a type derived from Exception. So, do not use collectException to collect non-Exceptions unless you're sure that that's what you really want to do.

T collectException(E expression, E result)
T collectException(E expression)
T
collectException
(
T : Throwable = Exception
E
)
(
lazy E expression
)

Parameters

T: The type of exception to catch.
expression E: The expression which may throw an exception.

Examples

int foo() { throw new Exception("blah"); }
assert(collectException(foo()).msg == "blah");

collectException

Parameters

Examples

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