原文:Set file properties in Python
在Filemanager(Windows)中,我可以正确地点击档案,看看其特性。 我愿用沙尔来抓他们。 这似乎很复杂。 原文照相。
原文:Passing Superclasses to C# Functions (With a Java overture)
一段时间以来,我和爪哇·奥普(Java OOP)合作过,所以我有点生锈,想得到一些澄清。 在爪哇,如果我记错的话,人们可以宣布一个超级阶级,并立即将一个子阶级命名为子阶级;......
原文:Why to assign an instance of a derived class to a variable which Type is not the one of the instance, but its base class
我有5年的经验。但说实话,我知道并使用这个构思...基础级bc = 新的DerivedClass () (; 我不知道它实际上做什么, 不是真的, 不是真的。 它是一个衍生的...)
原文:Loss of polymorphism after pattern matching
以下代码旨在生成双倍或整数。 s 被假定为反函数或id; n 整个部分; f 分数部分或整数无。计算Value * 。
原文:H/W: C++ Error "trying to initialize Abstract base class"
• 着手组建一个称为“StackAsLinkedList”的班级,该班应当是抽象的“Stack”(测试代码,可在此查阅:http://www.brpreiss.com/books/opus4/)。
原文:Why would you declare an Interface and then instantiate an object with it in Java?
A friend and I are studying Java. We were looking at interfaces today and we got into a bit of an discussion about how interfaces are used. The example code my friend showed me contained this: ...
原文:overloading << operators and inherited classes
I ve got a base class and then several derived classes. I would like to overload the "<<" operator for these derived classes. For normal operators, i.e. + , virtual functions do the trick. What ...
原文:Polymorphic vs HABTM relationships for a tagging system
I am currently making a database for a rails application. This schema involves three models: Photo, Object and Tag. Both photos and objects need to be "taggable". Tags are unique Tags can belong to a ...
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