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PHP - how to create a newline character?

... Only double quoted strings interpret the escape sequences \r and \n as '0x0D' and '0x0A' respectively, so you want: "\r\n" Single quoted strings, on the other hand, only know the escape sequences \\ and \'. So unless you concatenate the single quoted string with a line break genera...
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Why doesn't Haskell's Prelude.read return a Maybe?

...e shuffle. There should be such a function, although one is easy to write (and there are zillions of very similar versions floating around many codebases). See also this discussion. Personally, I use the version from the safe package. ...
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What does “exited with code 9009” mean during this build?

... Did you try to give the full path of the command that is running in the pre- or post-build event command? I was getting the 9009 error due to a xcopy post-build event command in Visual Studio 2008. The command "xcopy.exe /Y C:\projectpath\project.config C:\compile...
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Android: “Path for project must have only one segment”

... answered Feb 10 '11 at 18:43 Android EveAndroid Eve 14.3k2323 gold badges6666 silver badges9393 bronze badges ...
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What is the difference between RDF and OWL? [closed]

...rying to grasp the concept of Semantic Web. I am finding it hard to understand what exactly is the difference between RDF and OWL. Is OWL an extension of RDF or these two are totally different technologies? ...
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MySQL - UPDATE multiple rows with different values in one query

I am trying to understand how to UPDATE multiple rows with different values and I just don't get it. The solution is everywhere but to me it looks difficult to understand. ...
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Func with out parameter

... ref and out are not part of the type parameter definition so you can't use the built-in Func delegate to pass ref and out arguments. Of course, you can declare your own delegate if you want: delegate V MyDelegate<T,U,V>(T ...
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Add a “hook” to all AJAX requests on a page

...every single AJAX request (either as it's about to get sent, or on events) and perform an action. At this point I'm assuming that there are other third-party scripts on the page. Some of these might use jQuery, while others do not. Is this possible? ...
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How to get a path to a resource in a Java JAR file

...le" may not be available as a file. Remember you are dealing with classes and resources that may be part of a JAR file or other kind of resource. The classloader does not have to provide a file handle to the resource, for example the jar file may not have been expanded into individual files in the ...
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How do I make the whole area of a list item in my navigation bar, clickable as a link?

I've got a horizontal navigation bar made from an unordered list, and each list item has a lot of padding to make it look nice, but the only area that works as a link is the text itself. How can I enable the user to click anywhere in the list item to active the link? ...