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What is Persistence Context?
I am new to the Java world and JPA. I was studying JPA and came across many new terms like Entity, persistence. While reading, I could not understand the exact definition for Persistence Context .
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Algorithm to detect intersection of two rectangles?
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I had a lot of trouble visualizing this so I re-created what I think the image being referenced looked like. imgur.com/bNwrzsv
– Rjdlee
Jun 22 '15 at 4:17
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c#: getter/setter
I saw something like the following somewhere, and was wondering what it meant. I know they are getters and setters, but want to know why the string Type is defined like this. Thanks for helping me.
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Is it possible for intellij to organize imports the same way as in Eclipse?
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Eclipse Code Formatter works totally fine, not sure what that shortcut problem was...
– Meo
May 19 '15 at 14:07
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Difference between final static and static final
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What is the difference between them or are they same?
If you are talking about changing order of static and final then yes they are same.
does it differ for private or public?
No, you can use any order in private and ...
Detecting when the 'back' button is pressed on a navbar
...Parent {
print("we are being popped")
}
}
That works fine. So what is causing the widespread myth that it doesn’t?
The problem seems to be due to an incorrect implementation of a different method, namely that the implementation of willMove(toParent:) forgot to call super.
If you imple...
“static const” vs “#define” vs “enum”
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It depends on what you need the value for. You (and everyone else so far) omitted the third alternative:
static const int var = 5;
#define var 5
enum { var = 5 };
Ignoring issues about the choice of name, then:
If you need to pass a...
Static implicit operator
...r means you can convert XmlBase to XElement implicitly.
XmlBase xmlBase = WhatEverGetTheXmlBase();
XElement xelement = xmlBase;
//no explicit convert here like: XElement xelement = (XElement)xmlBase;
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What is the point of the diamond operator () in Java 7?
...ge you instantiate with my_list = new List<>(), then it's not cool! What does my list contain again? Oh, let me hunt around for the definition. Suddenly, the benefit of the diamond shortcut goes bye bye.
– rmirabelle
Apr 3 '13 at 3:00
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In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...ontending technology you've omitted is Server-Sent Events / Event Source. What are Long-Polling, Websockets, Server-Sent Events (SSE) and Comet? has a good discussion of all of these. Keep in mind that some of these are easier than others to integrate with on the server side.
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