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See below method definition.
What is it called in C# where the equals sign is in method parameter.
Does it default method parameter initialization??
public List<Iabc> MyMethod(out List<Ixyz> faces, Type typeXYZ = null, int flag = -1)
{
//...
//...
}
NOTE: Here Iabc and Ixyz are any Interfaces.
They’re called optional (or named) arguments. MSDN usually has these things explained pretty well:
Named and Optional Arguments (C# Programming Guide)