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# subscript(_:)

Accesses the element at the specified position.

```
subscript(i: Int) -> Element { get }
```

## Parameters

`i`

The position of the element to access. `i` must be in the
range `0..<count`.

## Overview

The following example uses the buffer pointer’s subscript to access every
other element of the buffer:

```
let numbers = [1, 2, 3, 4, 5]
let sum = numbers.withUnsafeBufferPointer { buffer -> Int in
    var result = 0
    for i in stride(from: buffer.startIndex, to: buffer.endIndex, by: 2) {
        result += buffer[i]
    }
    return result
}
// 'sum' == 9
```

> Note: Bounds checks for `i` are performed only in debug mode.

---

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