C#•15mo ago

❔ AOT compatible way of getting the default value of a Type?

Say we have a known Type, what are some AOT compatible options to get the default value of that Type? (note: Reflection is currently okay)

5 Replies

Tvde1•15mo ago

If you have a generic type parameter T you can default(T). Does that work for you?

DongleOP•15mo ago

No, we don't have the generic type parameter

JakenVeina•15mo ago

Reflection is currently okay

can you not simply have a look at .IsValueType then? if true, you can reflect to grab the parameterless constructor, which is guaranteed to exist for value types, otherwise the default is null

reflectronic•15mo ago

public static object? GetDefault(Type type)
{
   if (type.IsValueType)
   {
      return RuntimeHelpers.GetUninitializedObject(type);
   }

   return null;
}

public static object? GetDefault(Type type)
{
   if (type.IsValueType)
   {
      return RuntimeHelpers.GetUninitializedObject(type);
   }

   return null;
}

Accord•15mo 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.

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❔ AOT compatible way of getting the default value of a Type?