16 let arr = Array.from("abcd");  variable
17 print(arr);
18 arr = Array.from("abcd");
19 print(arr);
20 arr[1] = 'e';
21 print(arr);
22 arr = Array.from("abcd");
23 print(arr);
25 arr = Array.from("01234567890123456789012");
26 print(arr)
27 arr = Array.from("方舟")
28 print(arr);
29 arr = Array.from("方舟")
30 print(arr);
31 arr = Array.from("")
32 print(arr.length)
33 arr[0] = 'a'
34 arr = Array.from("")
35 print(arr.length)
42 arr = Array.from(src);
43 print(arr[666]);
44 print(arr[999]);
45 print(arr.length);
146     let arr = [1, 2, 3, 4, 5, 6];  variable
147     Object.defineProperty(arr, 0, {
150             arr.pop();
154     let res = Array.from(arr);
159     let arr = new Object(1);  variable
160     arr[1] = 1;
161     arr.length = 10;
162     arr[Symbol.iterator] = arrIterBak;
163     print(arr.constructor)
164     let res = Array.from(arr);
195     let arr = 1
196     let res = Array.from(arr);
201     let arr = [1,2,3];  variable
202     let res = Array.from(arr.values());