The ultimate fast alternative to Activator.CreateInstance<T>
Up to 50x faster than Activator.CreateInstance<T>
Generic Parameters Support
Non-Public Constructor Support
No Generic Constraints
TryGetValue-like TryFastNew API
Link Mode PublishTrimmed Support
C# 8 Nullable Support
C# 10 Parameterless struct constructors Support (Both invokes or not)
.NET Standard 2.0 or above C# 8.0 or above Roslyn 4.0.1 or above Modern IDE(Optional) [VS2022, Rider, VSCode]
📖 Examples
using FastGenericNew;
// Simply replace 'Activator' to 'FastNew'
var obj = FastNew.CreateInstance<T>();
// With parameter(s)
var obj2 = FastNew.CreateInstance<T, string>("text");
var obj3 = FastNew.CreateInstance<T, string, int>("text", 0);
// Try pattern
// NOTE: The try pattern will only check if the constructor can be called.
// It will not catch or handle any exceptions thrown in the constructor.
if (FastNew.TryCreateInstance<T, string>("arg0", out T result));
{
// ...
}
Notes
With .NET Framework, Activator.CreateInstance<T>() invokes the parameterless constructor of ValueType if
the constraint is where T : new() but appears to ignore the parameterless constructor if the constraint is where T : struct. But FastNew.CreateInstance<T>() will always invoke the parameterless constructor if it's available.
If you don't want to invoke the parameterless constructor of ValueType,
consider using FastNew.NewOrDefault<T>() which will never invoke the parameterless constructor of ValueType
