Why is this an issue?
Overriding or shadowing a variable declared in an outer scope can strongly impact the readability, and therefore the maintainability, of a piece of
code. Further, it could lead maintainers to introduce bugs because they think they’re using one variable but are really using another.
class Foo {
public var myField:int;
public function doSomething():String {
var myField:int = 0; /* Noncompliant */
...
}
}