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java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet

i am using spring 3.1.0.RELEASE , and my servlet container is tomcat 7 and my IDE is eclipse indigo and the jar spring-webmvc-3.1.0.RELEASE.jar which contains the DispatcherServlet exists in the lib folder, and yet when running the application, i am getting the exception: ...
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What's the idiomatic syntax for prepending to a short python list?

... explanation for the missing list.prepend() . Assuming my list is short and performance concerns are negligible, is 4 A...
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When is layoutSubviews called?

...ith the answer (or any I could find on the net), so I tried it in practice and here is what I got: init does not cause layoutSubviews to be called (duh) addSubview: causes layoutSubviews to be called on the view being added, the view it’s being added to (target view), and all the subviews of th...
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Difference between \b and \B in regex

I am reading a book on regular expression and I came across this example for \b : 9 Answers ...
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How to delete from multiple tables in MySQL?

...m trying to delete from a few tables at once. I've done a bit of research, and came up with this 7 Answers ...
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Why does this assert throw a format exception when comparing structures?

I'm trying to assert the equality of two System.Drawing.Size structures, and I'm getting a format exception instead of the expected assert failure. ...
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How to change past commit to include a missed file?

I have committed a change and forgot to add a file to the change set. After other commits, I realized the file is now missing from a HEAD^4 commit. ...
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Align two inline-blocks left and right on same line

How can I align two inline-blocks so that one is left and the other is right on the same line? Why is this so hard? Is there something like LaTeX's \hfill that can consume the space between them to achieve this? ...
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Handling optional parameters in javascript

... You can know how many arguments were passed to your function and you can check if your second argument is a function or not: function getData (id, parameters, callback) { if (arguments.length == 2) { // if only two arguments were supplied if (Object.prototype.toString.call(param...
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Textarea onchange detection

... You will need to use onkeyup and onchange for this. The onchange will prevent context-menu pasting, and the onkeyup will fire for every keystroke. See my answer on How to impose maxlength on textArea for a code sample. ...