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Alias std.typecons.WhiteHole
WhiteHole!Base
is a subclass of Base
which automatically implements
all abstract member functions as functions that always fail. These functions
simply throw an Error
and never return. Whitehole
is useful for
trapping the use of class member functions that haven't been implemented.
The name came from Class::WhiteHole Perl module by Michael G Schwern.
Parameters
Name | Description |
---|---|
Base | A non-final class for WhiteHole to inherit from. |
See Also
Example
import std .exception : assertThrown;
static class C
{
abstract void notYetImplemented();
}
auto c = new WhiteHole!C;
assertThrown!NotImplementedError(c .notYetImplemented()); // throws an Error
Authors
Andrei Alexandrescu, Bartosz Milewski, Don Clugston, Shin Fujishiro, Kenji Hara
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.