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The relationship could not be changed because one or more of the foreign-key properties is non-nulla
I am getting this error when I GetById() on an entity and then set the collection of child entities to my new list which comes from the MVC view.
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Performance of FOR vs FOREACH in PHP
First of all, I understand in 90% of applications the performance difference is completely irrelevant, but I just need to know which is the faster construct. That and...
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Save modifications in place with awk
... am learning awk and I would like to know if there is an option to write changes to file, similar to sed where I would use -i option to save modifications to a file.
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Curious null-coalescing operator custom implicit conversion behaviour
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What is the C# equivalent of NaN or IsNumeric?
What is the most efficient way of testing an input string whether it contains a numeric value (or conversely Not A Number)? I guess I can use Double.Parse or a regex (see below) but I was wondering if there is some built in way to do this, such as javascript's NaN() or IsNumeric() (was that VB...
程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
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假设我们要对LOVE加密，我们可以先定义字母的顺序ABCDEFGHIJKLMNOPQRSTUVWXYZ，然后我们让每个字母向后移动两位，那么LOVE就变为了NQXG
L------>N
O------>Q
V------>X
E------>
LOVE--->NQXG
我想这就是最简单的加密方式。
密钥加密技术...
smart pointers (boost) explained
What is the difference between the following set of pointers? When do you use each pointer in production code, if at all?
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JavaScript variable number of arguments to function
Is there a way to allow "unlimited" vars for a function in JavaScript?
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What are some uses of template template parameters?
I've seen some examples of C++ using template template parameters (that is templates which take templates as parameters) to do policy-based class design. What other uses does this technique have?
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