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Swapping two variable value without using third variable
...*y;
*y ^= *x;
*x ^= *y;
}
}
Why the test?
The test is to ensure that x and y have different memory locations (rather than different values). This is because (p xor p) = 0 and if both x and y share the same memory location, when one is set to 0, both are set to 0.
When both *x...
'typeid' versus 'typeof' in C++
I am wondering what the difference is between typeid and typeof in C++. Here's what I know:
6 Answers
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Automatically start forever (node) on system restart
...dule to keep my node server running. Forever however terminates when there is a system restart. Is there any way I can automatically start the node server (with forever) when the system restarts?
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add created_at and updated_at fields to mongoose schemas
Is there a way to add created_at and updated_at fields to a mongoose schema, without having to pass them in everytime new MyModel() is called?
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Wrapping synchronous code into asynchronous call
...ET application, that consumes quite a lot of time to complete. A call to this method might occur up to 3 times during one user request, depending on the cache state and parameters that user provides. Each call takes about 1-2 seconds to complete. The method itself is synchronous call to the service ...
What to do on TransactionTooLargeException
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I encountered this issue, and I found that when there huge amount of data getting exchanged between a service and an application,(This involves transferring lots of thumbnails). Actually data size was around 500kb, and the IPC transaction b...
Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
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I have had this error many times and it can be quite hard to track down...
Basically, what hibernate is saying is that you have two objects which have the same identifier (same primary key) but they are not the same object.
I would sugg...
How to bind Events on Ajax loaded Content?
...aded content into a div (appendedContainer) of my HTML page. The problem is that the click event I have bound with jQuery is not being executed on the newly loaded content which is inserted into the appendedContainer. The click event is bound on DOM elements that are not loaded with my AJAX fu...
Can someone copyright a SQL query? [closed]
I work for a school district. Every year we have to export a list of students from our student management system and send it to a company that handles our online exams.
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Why would one use the Publish/Subscribe pattern (in JS/jQuery)?
So, a colleague introduced me to the publish/subscribe pattern (in JS/jQuery), but I'm having a hard time getting to grips with why one would use this pattern over 'normal' JavaScript/jQuery.
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