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Why does Eclipse Java Package Explorer show question mark on some classes?

...lipse Helios Java Package Explorer, I see the Java class icons display a small question mark to the right of the 'J', something like [J?]. This icon is shown on each class within one package in my project, but I cannot find an explanation for this in the documentation. ...
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What's the difference between “Normal Reload”, “Hard Reload”, and ...

... @Grinn: Actually, now that I think of it, it's probably the entire cache. The point of that feature is to clear after-the-fact downloads, which aren't restricted to just one "site". – Andrew Rasmussen ...
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Rename multiple files in a directory in Python [duplicate]

...e script itself. Instead of using . as the dir, you could make a variable called dir and use that, then prepend dir to the filename. – styfle May 18 '11 at 5:53 18 ...
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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?

... While TIMESTAMP looks similar when you fetch it from the database, it's really a just a front for a unix timestamp. Its valid range goes from 1970 to 2038. The difference here, aside from the various built-in functions within the database engine, is storage space. Because DATETIME stores every digi...
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Trigger change() event when setting 's value with val() function

...s is exactly what I needed. What is the best way to discover how to dynamically trigger DOM event handlers? Does jQuery document this well? Thank you! – Con Antonakos Oct 1 '14 at 17:38 ...
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conditional unique constraint

... That's only partially true onedaywhen. The database behaves consistently and predictably. The check constraint will execute after the row is added to the table and before the transaction is committed by the dbms and you can count on that. ...
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How can I add a third button to an Android Alert Dialog?

...that the Alert Dialog can have one, two or three buttons, but the SDK only allows for a positive and negative button. How then can I add a third button? ...
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How to get Vim to highlight non-ascii characters?

...aracter range, therefore highlighting (assuming you have hlsearch enabled) all other characters lying outside the ASCII range: /[^\x00-\x7F] This will do a negative match (via [^]) for characters between ASCII 0x00 and ASCII 0x7F (0-127), and appears to work in my simple test. For extended ASCII,...
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What is the default form HTTP method?

...faults to the base URI of the document" enctype: "The default encoding for all forms is `application/x-www-form-urlencoded'." <!ATTLIST FORM ACTION CDATA #IMPLIED METHOD (%HTTP-Method) GET ENCTYPE %Content-Type; "application/x-www-form-urlencoded" ...
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Using jQuery how to get click coordinates on the target element

... Thanks, because I personally confused with offset() and position(), for anyone need further clarification may read stackoverflow.com/questions/3202008/… for convenience sake – simongcc May 9 '14 at 3:24 ...