# V7016\. Suspicious access to a collection element by a constant index inside a loop\.

The analyzer has detected that the code accesses the same collection element on every iteration of a for loop using a constant index\.

The example:

```cpp
let sum = 0;
for (let i = 0; i < arr.length; i++) {
  sum += arr[0];          // <=
}
```

In this case, it is intended to sum all elements of the array, but the index contains a typo\. As a result, only the first array element is used, and the values of the other elements are ignored\. 

The fixed code:

```cpp
let sum = 0;
for (let i = 0; i < arr.length; i++) {
  sum += arr[i];  
}
```