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Why don't C++ compilers define operator== and operator!=?
...ison or a deep (internal) comparison.
It's safer to just not implement it and let the programmer do that themselves. Then they can make all the assumptions they like.
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...
Jaxb, Class has two properties of the same name
...
I also faced problem like this and i set this.
@XmlRootElement(name="yourRootElementName")
@XmlAccessorType(XmlAccessType.FIELD)
This will work 100%
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Should I call Close() or Dispose() for stream objects?
... void Close()
{
this.Dispose(true);
GC.SuppressFinalize(this);
}
And StreamReader is:
public override void Close()
{
this.Dispose(true);
}
The Dispose(bool disposing) override in StreamReader is:
protected override void Dispose(bool disposing)
{
try
{
if ((this.Clos...
Repeat a task with a time delay?
...
You should use Handler's postDelayed function for this purpose. It will run your code with specified delay on the main UI thread, so you will be able to update UI controls.
private int mInterval = 5000; // 5 seconds by default, can be chan...
Can I return the 'id' field after a LINQ insert?
... Maybe you'll need to set your field to "database generated" and "update on insert" for this to work.
– Sam
Sep 22 '08 at 9:57
1
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How to detect a loop in a linked list?
...ou can make use of Floyd's cycle-finding algorithm, also known as tortoise and hare algorithm.
The idea is to have two references to the list and move them at different speeds. Move one forward by 1 node and the other by 2 nodes.
If the linked list has a loop they
will definitely meet.
Else eith...
Why doesn't await on Task.WhenAll throw an AggregateException?
...nto the actual exception.
So, in catch block, you get the actual exception and not the aggregated one. This helps us write more natural and intuitive code.
This was also needed for easier conversion of existing code into using async/await where the a lot of code expects specific exceptions and not a...
(How) can I count the items in an enum?
...st it's fairly easy to see that "enum foo {a=10,LAST}" is going to be odd. And I thought "int arr[LAST]" would be 11 items in this case, not 2, so most code will work (but you're wasting memory on invalid index values)
– Code Abominator
Jul 15 '15 at 5:44
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Check if table exists and if it doesn't exist, create it in SQL Server 2008
...LECT * FROM sys.objects
WHERE object_id = OBJECT_ID(N'[dbo].[YourTable]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[YourTable](
....
....
....
)
END
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c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术
... // 虚部
};
bool Parse(COMPLEX * cp, const char * strCplx, const int len)
{
memset(cp, 0, sizeof(COMPLEX));
char buf[MAX_BUF_LEN];
int signPos = -1, // +/-号位置
iPos = -1; // 结尾的i的位置
for (int i = len-1; i >-1; i--)
{
...