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version 2.108.1

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Function std.variant.VariantN.peek

If the VariantN object holds a value of the exact type T, returns a pointer to that value. Otherwise, returns null. In cases where T is statically disallowed, peek will not compile.

inout inout(T)* peek(T)() @property;

Example

Variant a = 5;
auto b = a.peek!(int);
assert(b !is null);
*b = 6;
writeln(a); // 6

Authors

Andrei Alexandrescu

License

Boost License 1.0.