TypeScript/tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithConstraintsTypeArgumentInference2.ts
2014-07-12 17:30:19 -07:00

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TypeScript

// Generic call with parameters of T and U, U extends T, no parameter of type U
function foo<T, U extends T>(t: T) {
var u: U;
return u;
}
var r = foo(1); // ok
var r2 = foo(null); // {}
var r3 = foo(new Object()); // {}
var r4 = foo<Date, Date>(1); // error
var r5 = foo<Date, Date>(new Date()); // no error