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EF Code First foreign key without navigation property
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With EF Code First Fluent API it is impossible. You always need at least one navigation property to create a foreign key constraint in the database.
If you are using Code First Migrations you have the option to add a new code based migration on the pa...
Resolve promises one after another (i.e. in sequence)?
...ads an array of files in a serial/sequential manner. readFiles returns a promise, which is resolved only once all files have been read in sequence.
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C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...为0000000011111111)。
main() {
int a=9,b=5,c;
c=a&b;
printf("a=%d\nb=%d\nc=%d\n",a,b,c);
}
二、 按位或运算符(|)
1、运算规则
参加运算的两个数据，按二进位进行“或”运算，如果两个相应的二进位都为0，则该位的结果值...
How to check the version of GitLab?
...SH access to server.
You should be logged in to access the following page:
https://your.domain.name/help
It shows something similar to:
GitLab 6.6.4 42e34ae
GitLab is open source software to collaborate on code.
...
etc.
s...
C++ Tuple vs Struct
Is there is any difference between using a std::tuple and a data-only struct ?
12 Answers
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Why do we not have a virtual constructor in C++?
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Hear it from the horse's mouth. :)
From Bjarne Stroustrup's C++ Style and Technique FAQ Why don't we have virtual constructors?
A virtual call is a mechanism to get work done given partial
information. In particular, "virtual" allows us to call a function
knowing only any ...
$apply already in progress error
...apply really is appropriate here, consider using a "safe apply" approach:
https://coderwall.com/p/ngisma
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Ruby on Rails - Import Data from a CSV file
...pread the load of generating entries to multiple workers.
See also:
https://github.com/tilo/smarter_csv
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LINUX: Link all files from one to another directory [closed]
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ln -s /mnt/usr/lib/* /usr/lib/
I guess, this belongs to superuser, though.
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浮点数在内存中的表示 - C/C++ - 清泛网 - 专注IT技能提升
浮点数在内存中的表示Float_Memory_Representation浮点数 内存 补码 阶码 尾数一般我们常见的字符型、整型在内存中采用标准的二进制存储，但是程序员往往容易忽略浮点数在内存中的储存方式，从而会导致一些误用，最常见的是浮...