distinguish between local scope and global scope variables with same name in swift
<p>how to distinguish between local scope and global scope variables with same name in "swift" (and in "objective-c")</p>

<p>For eg:</p>

<pre><code>var a = 10
for i in 1...10 {
  var a = 20
  a = 40
}
</code></pre>

<p>in this code snippet, how can I save 40 to the global variable "a" ? 
Sorry if it's a duplicate question.</p>

<p><strong>Edit</strong></p>

<p>Changing any variable name is obviously possible, but I want to know if there any way to do this.</p>