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Entity framework code-first null foreign key
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169
You must make your foreign key nullable:
public class User
{
public int Id { get; set; }
...
Can I use an OR in regex without capturing what's enclosed?
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186
Depending on the regular expression implementation you can use so called non-capturing groups ...
How to use CMAKE_INSTALL_PREFIX
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122
That should be (see the docs):
cmake -DCMAKE_INSTALL_PREFIX=/usr ..
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Swift 编程语言入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...大家
原文地址：http://gashero.iteye.com/blog/2075324
目录
1 简介
2 Swift入门
3 简单值
4 控制流
5 函数与闭包
6 对象与类
7 枚举与结构
1 简介
今天凌晨Apple刚刚发布了Swift编程语言，本文从其发布的书籍《The Swi...
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edited Aug 24 at 15:46
Iulian Onofrei
6,77988 gold badges5252 silver badges9393 bronze badges
a...
Add new item in existing array in c#.net
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120
I would use a List if you need a dynamically sized array:
List<string> ls = new List<...
What does the `#` operator mean in Scala?
... println("Got my B!")
}
Now let's try something with it:
scala> val a1 = new A
a1: A = A@2fa8ecf4
scala> val a2 = new A
a2: A = A@4bed4c8
scala> a2.f(new a1.B)
<console>:11: error: type mismatch;
found : a1.B
required: a2.B
a2.f(new a1.B)
^
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Using IoC for Unit Testing
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131
Generally speaking, a DI Container should not be necessary for unit testing because unit testi...
What is the syntax for a default constructor for a generic class?
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143
You don't provide the type parameter in the constructor. This is how you should do it.
public...