What is the graceful way to remove an element from C# ArrayList in a loop?

Question

I'm quite happy with
Java's

ArrayList<String> list = new ArrayList<>();

Iterator<SignalEvent> it = list.iterator();

while (it.hasNext()) {

    String s = it.next();            

    if(s.equals("delete me")){

        it.remove();

    }

}

not quite happy but feels OK with C++'s

std::list<MyObject*> mylist;    

for (list<MyObject*>::iterator it = mylist.begin(); it != mylist.end();)

{

    MyObject* se = (*it);

    if(se->bDelete == true)

        it = mylist.erase(it);

    else

        it++;

}

Now comes to C#, is this the best way to do it?

Do you have an iterator way of doing it?

Do you have better suggestion considering performance and readability.

for( int i = arrayList.Count - 1; i >= 0; i -- )

{

    if( arrayList[ i ].ToString() == "del" )

    {

        arrayList.RemoveAt( i );

    }

}

Note: List.RemoveAll(Predicate match) has to introduce a new function, doesn't it?

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Answer 1

If you don't mind creating a new list, you can use Linq, which is unquestionably graceful:

arrayList.where(x => x.toString() != "del");

Or if you still want to remove things from the list instead of using the previous solution, see if you can use a lambda expression instead:

arrayList.RemoveAll(x => x.toString() == "del");

What is the graceful way to remove an element from C# ArrayList in a loop?

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