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Enum member std.sumtype.isSumType
True if T is a [SumType] or implicitly converts to one, otherwise false.
enum isSumType(T)
= is(T : SumType!Args, Args...);
Example
static struct ConvertsToSumType
{
SumType!int payload;
alias payload this;
}
static struct ContainsSumType
{
SumType!int payload;
}
assert(isSumType!(SumType!int));
assert(isSumType!ConvertsToSumType);
assert(!isSumType!ContainsSumType);
Authors
Paul Backus
License
Boost License 1.0
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