C#•2y ago

✅ Array Assignment Error

I'm iterating over a list of classes, and in each class, there's a property that is an array which I iterate over and remove anything that matches what I want to remove. Originally, I did a .Where() for comparison and then .ToList() which I iterated over and did a Array.Clear on the original array. But that just leaves behind null classes in the Array. So I changed my approach, converted the array to a list and did a remove all. I want to set the original Array equal to this List<T>.ToArray(), but when I try that, I get "the Left-hand side of an assignment must be a variable, property or indexer" error.

  foreach (Foo foo in fooBar ?? Enumberable.Empty<Foo>)
  {
    List<Bar>? barList = foo?.bar.ToList<Bar>();
    barList?.RemoveAll(bar => bar.Name == "");
    foo?.bar = barList??.ToArray(); // error here
  }

  foreach (Foo foo in fooBar ?? Enumberable.Empty<Foo>)
  {
    List<Bar>? barList = foo?.bar.ToList<Bar>();
    barList?.RemoveAll(bar => bar.Name == "");
    foo?.bar = barList??.ToArray(); // error here
  }

7 Replies

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

therealgooeyOP•2y ago

Wondering if anyone can take a look at this.

TheRanger•2y ago

what does the error message say?

therealgooeyOP•2y ago

CS0131: The left-hand side of an assignment must be a variable, property or indexer.

MODiX•2y ago

TheRanger#3357

REPL Result: Failure

int? i = 2;
i?.Value = 3;

int? i = 2;
i?.Value = 3;

Exception: CompilationErrorException

- 'method group' cannot be made nullable.

- 'method group' cannot be made nullable.

Compile: 526.995ms | Execution: 0.000ms | React with ❌ to remove this embed.

TheRanger•2y ago

yea i dont think foo?.bar works try instead

if (foo != null)
{
  foo.bar = yourValue;
}

if (foo != null)
{
  foo.bar = yourValue;
}

therealgooeyOP•2y ago

Yep, that was it! Now that I think about it, that makes sense. I appreciate the help

Gaming

Programming

✅ Array Assignment Error