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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
Copyright © 1999-2018 by the D Language Foundation | Page generated by ddox.