I have a class that contains a method of which parameter name matches a field name.
class Test
{
private int num;
public void Setup(int num)
{
if (num == 10)
{
...
}
}
}
Is there any case in which evaluation inside the method Setup, could instead of the parameter, use the field instead?
No, there is no possibility that an evaluation would use the field instead of the parameter. Variables within a scope always shadow variables of outer scopes.
So, if your method has a num parameter, there is no way to access the instance member num from within that method without qualifying it with this.
But it is best to try and avoid these situations, if you can.
Yes, refer to it as this.num rather than just num.
class Test
{
private int num;
public void Setup(int num)
{
if (num == 10) //parameter
{
this.num = 42; //field
}
}
}
