C# Language Dynamic type Handling Specific Types Unknown at Compile Time
Example
The following output equivalent results:
class IfElseExample
{
public string DebugToString(object a)
{
if (a is StringBuilder)
{
return DebugToStringInternal(a as StringBuilder);
}
else if (a is List<string>)
{
return DebugToStringInternal(a as List<string>);
}
else
{
return a.ToString();
}
}
private string DebugToStringInternal(object a)
{
// Fall Back
return a.ToString();
}
private string DebugToStringInternal(StringBuilder sb)
{
return $"StringBuilder - Capacity: {sb.Capacity}, MaxCapacity: {sb.MaxCapacity}, Value: {sb.ToString()}";
}
private string DebugToStringInternal(List<string> list)
{
return $"List<string> - Count: {list.Count}, Value: {Environment.NewLine + "\t" + string.Join(Environment.NewLine + "\t", list.ToArray())}";
}
}
class DynamicExample
{
public string DebugToString(object a)
{
return DebugToStringInternal((dynamic)a);
}
private string DebugToStringInternal(object a)
{
// Fall Back
return a.ToString();
}
private string DebugToStringInternal(StringBuilder sb)
{
return $"StringBuilder - Capacity: {sb.Capacity}, MaxCapacity: {sb.MaxCapacity}, Value: {sb.ToString()}";
}
private string DebugToStringInternal(List<string> list)
{
return $"List<string> - Count: {list.Count}, Value: {Environment.NewLine + "\t" + string.Join(Environment.NewLine + "\t", list.ToArray())}";
}
}
The advantage to the dynamic, is adding a new Type to handle just requires adding an overload of DebugToStringInternal of the new type. Also eliminates the need to manually cast it to the type as well.
