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25 lines
505 B
TypeScript
25 lines
505 B
TypeScript
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abstract class A<T> {
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t: T;
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abstract foo(): T;
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abstract bar(t: T);
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}
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abstract class B<T> extends A<T> {}
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class C<T> extends A<T> {} // error -- inherits abstract methods
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class D extends A<number> {} // error -- inherits abstract methods
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class E<T> extends A<T> { // error -- doesn't implement bar
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foo() { return this.t; }
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}
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class F<T> extends A<T> { // error -- doesn't implement foo
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bar(t : T) {}
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}
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class G<T> extends A<T> {
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foo() { return this.t; }
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bar(t: T) { }
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}
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