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Maven: The packaging for this project did not assign a file to the build artifact

I'm using Maven 3.0.3 on Mac 10.6.6. I have a JAR project and when I run the command "mvn clean install:install", I'm getting the error, ...
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ALTER TABLE without locking the table?

... And have a thorough test plan before swapping. If it fails, start over. – dkretz Jan 21 '09 at 2:29 2 ...
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Position Relative vs Absolute?

What is the difference between position: relative and position: absolute in CSS? And when should you use them? 10 Answe...
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Does a javascript if statement with multiple conditions test all of them?

...IT: Though, you shouldn't worry about performance until you've benchmarked and determined that it's a problem. Premature micro-optimization is the bane of maintainability. share | improve this answe...
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How do I convert an integer to binary in JavaScript?

...nswered Apr 22 '13 at 19:43 fernandosaviofernandosavio 6,82233 gold badges2020 silver badges3232 bronze badges ...
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Difference between numpy.array shape (R, 1) and (R,)

...ning of shapes in NumPy You write, "I know literally it's list of numbers and list of lists where all list contains only a number" but that's a bit of an unhelpful way to think about it. The best way to think about NumPy arrays is that they consist of two parts, a data buffer which is just a block...
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How much faster is Redis than mongoDB?

It's widely mentioned that Redis is "Blazing Fast" and mongoDB is fast too. But, I'm having trouble finding actual numbers comparing the results of the two. Given similar configurations, features and operations (and maybe showing how the factor changes with different configurations and operations), ...
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When to use , tag files, composite components and/or custom components?

I started using JSF 2.0 with Facelets recently and got puzzled by new composite components knowing existing <ui:include> and other templating techniques offered by Facelets 1.x. ...
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Checking for an empty field with MySQL

... An empty field can be either an empty string or a NULL. To handle both, use: email > '' which can benefit from the range access if you have lots of empty email record (both types) in your table. share ...
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What Makes a Good Unit Test? [closed]

I'm sure most of you are writing lots of automated tests and that you also have run into some common pitfalls when unit testing. ...