@SuppressWarnings({"unchecked", "rawtypes"})
	static EvolutionParams read(final ObjectInput in)
		throws IOException, ClassNotFoundException
	{
		return new EvolutionParams(
			(Selector)in.readObject(),
			(Selector)in.readObject(),
			(Alterer)in.readObject(),
			readInt(in),
			in.readDouble(),
			readLong(in)
		);
	}
Return the number of survivors. <em>This is a derived property.</em>

@return the number of survivors
jenetics/src/main/java/io/jenetics/engine/EvolutionParams.java