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version 2.109.1

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std.typecons.Nullable.isNull - multiple declarations

Function Nullable.isNull

Check if this is in the null state.

bool isNull() const pure nothrow @property @safe;

Returns

true iff this is in the null state, otherwise false.

Example

Nullable!int ni;
assert(ni.isNull);

ni = 0;
assert(!ni.isNull);

Function Nullable.isNull

Check if this is in the null state.

bool isNull() const @property;

Returns

true iff this is in the null state, otherwise false.

Example

Nullable!(int, -1) ni;
//Initialized to "null" state
assert(ni.isNull);

ni = 0;
assert(!ni.isNull);

Authors

Andrei Alexandrescu, Bartosz Milewski, Don Clugston, Shin Fujishiro, Kenji Hara

License

Boost License 1.0.