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Unable to begin a distributed transaction

...S DTC will not be able to communicate with each other. This problem typically occurs if one of the systems were cloned using unsupported cloning tools. MS DTC requires that the systems be cloned using supported cloning tools such as SYSPREP. Running 'msdtc -uninstall' and then 'msdtc -instal...
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Intermittent log4net RollingFileAppender locked file issue

... Try adding <lockingModel type="log4net.Appender.FileAppender+MinimalLock" /> to your <appender /> element. There is some performance impact because this means that log4net will lock the file, write to it, and unlock it for each write operation (as opposed to the default behavior,...
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Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh

...scope, by controllers) to fill these placeholders. Yes, references are really the core of VTL: <b>Hello $username!</b> or #if($listFromModel.size() > 1) You have many entries! #end Efficiency - <%@ include file="file.jsp" %> is more efficient than anything else, b...
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How to fully clean bin and obj folders within Visual Studio?

... As others have responded already Clean will remove all artifacts that are generated by the build. But it will leave behind everything else. If you have some customizations in your MSBuild project this could spell trouble and leave behind stuff you would think it should have...
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Abusing the algebra of algebraic data types - why does this work?

... Disclaimer: A lot of this doesn't really work quite right when you account for ⊥, so I'm going to blatantly disregard that for the sake of simplicity. A few initial points: Note that "union" is probably not the best term for A+B here--that's specifically ...
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What is the difference between a var and val definition in Scala?

... can, then, go the other direction. If val is that better, why have var at all? Well, some languages did take that route, but there are situations in which mutability improves performance, a lot. For example, take an immutable Queue. When you either enqueue or dequeue things in it, you get a new Qu...
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echo that outputs to stderr

...criptors will refer to the same file: the one file descriptor #2 was originally referring to. For more information see the Bash Hackers Illustrated Redirection Tutorial. share | improve this answer ...
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How can I concatenate NSAttributedStrings?

... NSMutableAttributedString *mutableAttString = [[NSMutableAttributedString alloc] init]; NSString *plainString = // ... NSDictionary *attributes = // ... a dictionary with your attributes. NSAttributedString *newAttString = [[NSAttributedString alloc] initWithString:plainString attributes:attribute...
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Determine which MySQL configuration file is being used

...inux, then start the 'mysqld' with strace, for eg strace ./mysqld. Among all the other system calls, you will find something like: stat64("/etc/my.cnf", 0xbfa3d7fc) = -1 ENOENT (No such file or directory) stat64("/etc/mysql/my.cnf", {st_mode=S_IFREG|0644, st_size=4227, ...}) = 0 open("/etc/...
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How to “undelete” a deleted folder in Subversion / TortoiseSVN?

We have accidentally deleted the 'tags' folder from our Subversion repository where we only intended to delete one specific tag. What is the easiest way to get the 'tags' folder back? ...