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jQuery hasAttr checking to see if there is an attribute on an element [duplicate]

How do you check if there is an attribute on an element in jQuery? Similar to hasClass , but with attr ? 9 Answers ...
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Maven2: Missing artifact but jars are in place

...er options apart from Project->Clean, some of which are more along the lines of turning it off and on again. Try right-clicking on the project and selecting Maven->Update Project Configuration. Disable then re-enable dependency management (right-click Maven->Disable Dependency Management...
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Does C have a “foreach” loop construct?

Almost all languages have a foreach loop or something similar. Does C have one? Can you post some example code? 12 Answer...
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Pass request headers in a jQuery AJAX GET call

I am trying to pass request headers in an AJAX GET using jQuery. In the following block, "data" automatically passes the values in the querystring. Is there a way to pass that data in the request header instead ? ...
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Override Python's 'in' operator?

If I am creating my own class in Python, what function should I define so as to allow the use of the 'in' operator, e.g. 3 ...
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Correct way to write line to file?

I'm used to doing print >>f, "hi there" 14 Answers 14 ...
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Add legend to ggplot2 line plot

I have a question about legends in ggplot2. I managed to plot three lines in the same graph and want to add a legend with the three colors used. This is the code used ...
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What does the PHP error message “Notice: Use of undefined constant” mean?

PHP is writing this error in the logs: "Notice: Use of undefined constant". 9 Answers ...
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How to avoid 'cannot read property of undefined' errors?

In my code, I deal with an array that has some entries with many objects nested inside one another, where as some do not. It looks something like the following: ...
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Java exception not caught?

...n 14.20.2.: If the catch block completes abruptly for reason R, then the finally block is executed. Then there is a choice: If the finally block completes normally, then the try statement completes abruptly for reason R. If the finally block completes abruptly for reason S, then the try statement...