koobas.hobune.stream
foreach Element Problem
public Component[] list;
list = GetComponentsInChildren<Component>();
foreach(Alpha a in list) // Alpha is a script.
Destroy(a);
I want to destroy all the Alpha scripts in that list of components. I was under the assumption that my foreach would work this way: Foreach Alpha script found in list do something, ignore every other component.
This is a casting problem, I think. Please help me understand casting/polymorphism better.
Similar question, in the sense that it has a list, there is nothing more in common. Not the same at all...
foreach simply iterates through all elements in list. Since you typed the iterator variable as Alpha it will throw a casting exception for each element that isn't of type Alpha. foreach does not sort or filter anything, it just iterates through the collection.
If you want to use a Component array (for what reason ever), you can do something like this:
foreach(Component c in list)
{
if (c is Alpha)
{
Destroy(c as Alpha);
// or
// Destroy((Alpha)c);
}
}
