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Template std.sumtype.tryMatch
Attempts to call a type-appropriate function with the value held in a [SumType], and throws on failure.
template tryMatch(handlers...)
;
Matches are chosen using the same rules as [match], but are not required to be exhaustive—in other words, a type (or combination of types) is allowed to have no matching handler. If a type without a handler is encountered at runtime, a [MatchException] is thrown.
Not available when compiled with -betterC.
Contained Functions
| Name | Description |
|---|---|
| tryMatch | The actual tryMatch function.
|
Returns
The value returned from the handler that matches the currently-held type, if a handler was given for that type.
Throws
[MatchException], if the currently-held type has no matching handler.
See Also
Authors
Paul Backus
License
Boost License 1.0
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