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Best way to detect when a user leaves a web page?
...nbeforeunload event: It is fired just before the page is unloaded. It also allows you to ask back if the user really wants to leave. See the demo onbeforeunload Demo.
Alternatively, you can send out an Ajax request when he leaves.
...
IPN vs PDT in Paypal
...n't happen. The application I wrote handles the PDT and IPN almost identically (the backend part is the same) and that code acquires a per-web-user lock in the database, so that if the same user tries to submit the exact same payment multiple times it can only be processed once. Once processed the...
Good or bad practice? Initializing objects in getter
... it seems... according to my co-worker at least. We've been working on a small project together. The way I wrote the classes is (simplified example):
...
Re-doing a reverted merge in Git
... but git-merge command sees the original merge, and happily announces that all is well and branches have been already merged. What do I do now? Create a 'Revert "Revert "28s -> develop"" ' commit? Doesn't seem to be a good way to do it, but I can't imagine any other at the moment.
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Why / when would it be appropriate to override ToString?
...way? Yes.
But by using ToString you are using a method that is common to all objects and thus other classes know about this method. For instance, whenever the .NET framework wants to convert an object to a string representation, ToString is a prime candidate (there are others, if you want to provi...
Service vs IntentService in the Android platform
...use threads within Service.
The IntentService can be used in long tasks usually with no communication to Main Thread. If communication is required, can use Main Thread handler or broadcast intents. Another case of use is when callbacks are needed (Intent triggered tasks).
How to trigger?
The Se...
Eclipse Build Path Nesting Errors
...ic web project structure. Rather than using the webcontent folder he wants all of our source code under src/main/java and src/main/webapp.
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SQL Server String or binary data would be truncated
...
I had faced the same problem and had to compare all the column types and sizes of both the tables to fix the issue.
– Aziz Shaikh
Jun 17 '11 at 16:40
1
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The requested operation cannot be performed on a file with a user-mapped section open
...piled in the Debug folder... Strange, isn't it?
I found out using a tool called Unlocker.
Had to delete with Unlocker, even when it was saying that there was no lock over the file, and I couldn't delete the folder until I didn't delete that single file...
After that it compiled.
EDIT:
I found o...
How do I preserve line breaks when using jsoup to convert html to plain text?
...ument.select("p").prepend("\\n\\n");
String s = document.html().replaceAll("\\\\n", "\n");
return Jsoup.clean(s, "", Whitelist.none(), new Document.OutputSettings().prettyPrint(false));
}
It satisfies the following requirements:
if the original html contains newline(\n), it gets preserve...