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Enum member std.sumtype.canMatch
True if handler is a potential match for Ts, otherwise false.
enum canMatch(alias handler, Ts...) = is(typeof((ref Ts args) => handler(args)));
See the documentation for [match] for a full explanation of how matches are chosen.
Example
alias handleInt = (int i) => "got an int";
assert( canMatch!(handleInt, int));
assert(!canMatch!(handleInt, string));
Authors
Paul Backus
License
Boost License 1.0
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