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Update Row if it Exists Else Insert Logic with Entity Framework
Does anyone have suggestions on the most efficient way to implement "update row if it exists else insert" logic using Entity Framework?
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Dashed line border around UIView
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edited Jul 16 '18 at 14:32
knshn
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answered Dec 3...
What is the maximum float in Python?
...sitive normalized float". Smaller denormal values are possible, down to 5e-324
– Bob Stein
May 11 '15 at 1:47
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Find files and tar them (with spaces)
Alright, so simple problem here. I'm working on a simple back up code. It works fine except if the files have spaces in them. This is how I'm finding files and adding them to a tar archive:
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Creating your own header file in C
...arlesworth
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2
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C++ SpinLock 自旋锁的代码实现（全网最简略的方式） - C/C++ - 清泛网 - ...
...d_set(memory_order_acquire)) {
if ( (spinCount++) == 0 ) {
#ifdef _WIN32
SwitchToThread();
#else
sched_yield();
#endif
}
}
}
void unlock() { f_.clear(memory_order_release); }
};
3、测试代码如下：
SpinLock lck;
thread thd([&]{
cout << "thread lock..." <...
Python hashable dicts
...rtelli
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Why isn't sizeof for a struct equal to the sum of sizeof of each member?
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Here's an example using typical settings for an x86 processor (all used 32 and 64 bit modes):
struct X
{
short s; /* 2 bytes */
/* 2 padding bytes */
int i; /* 4 bytes */
char c; /* 1 byte */
/* 3 padding bytes */
};
struct Y
{
int i; /* 4 bytes */...
Set a path variable with spaces in the path in a Windows .cmd file or batch file
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Try something like this:
SET MY_PATH=C:\Folder with a space
"%MY_PATH%\MyProgram.exe" /switch1 /switch2
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dplyr: “Error in n(): function should not be called directly”
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...