Community Forums: [Bug] arr1.slice(0) returns referance to original array.

[Bug] arr1.slice(0) returns referance to original array.

1392664786

Pro

Sheet Author

It is my understanding that using array.slice(0) should return a copy of the array but this is not the case with the API, if you edit a value in the array returned by slice it will edit the original as well.

1392829078

Lithl

Pro

Sheet Author

API Scripter

Permalink Quote

What is the type of the elements in the array? array.slice returns a shallow copy, not a deep copy. [new A(), new A(), new A()].slice(0)[0].foo = 'bar' will modify the value of foo in the first element of the original array, but [new A(), new A(), new A()].slice(0)[0] = new A() won't change the original array's contents.

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[Bug] arr1.slice(0) returns referance to original array.