Until relatively recently , all work whose copyright protection expired existed physically in one way or another , either as a unique creation , like a sculpture , or an instantiation of a mass-produced item , such as a book .
Either way , the combination of hardware and software is a concrete instantiation of an algorithm , allowing it to be studied .
无论如何,硬件与软件的结合是一种算法的实例,应当让它得到研究。
Specifies whether a containing folder is created on instantiation of the project .
指定项目实例化时是否创建一个包含文件夹。
That second class might not have any singleton-like protection against multiple instantiation , on the grounds that the factory will ensure that it constructs only one instance .