Both look like they’ll work. For the struct case I think yours is better. For the class case I think using Cast() like the original instead of OfType() makes mo

Both look like they’ll work. For the struct case I think yours is better. For the class case I think using Cast() like the original instead of OfType() makes more sense - you don’t need to filter out other types from the enumerable, so cast once instead of casting then performing a useless check on the result.