32 lines
925 B
TypeScript
32 lines
925 B
TypeScript
function combine<T, U>(x: T, y: U): [T, U] {
|
|
return [x, y];
|
|
}
|
|
|
|
var combineResult = combine("string", 10);
|
|
var combineEle1 = combineResult[0]; // string
|
|
var combineEle2 = combineResult[1]; // number
|
|
|
|
function zip<T, U>(array1: T[], array2: U[]): [[T, U]] {
|
|
if (array1.length != array2.length) {
|
|
return [[undefined, undefined]];
|
|
}
|
|
var length = array1.length;
|
|
var zipResult: [[T, U]];
|
|
for (var i = 0; i < length; ++i) {
|
|
zipResult.push([array1[i], array2[i]]);
|
|
}
|
|
return zipResult;
|
|
}
|
|
|
|
var zipResult = zip(["foo", "bar"], [5, 6]);
|
|
var zipResultEle = zipResult[0]; // [string, number]
|
|
var zipResultEleEle = zipResult[0][0]; // string
|
|
|
|
// #33559 and #33752
|
|
|
|
declare function f1<T1, T2>(values: [T1[], T2[]]): T1;
|
|
declare function f2<T1, T2>(values: readonly [T1[], T2[]]): T1;
|
|
|
|
let expected: "a";
|
|
expected = f1(undefined as ["a"[], "b"[]]);
|
|
expected = f2(undefined as ["a"[], "b"[]]);
|