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Factors in R: more than an annoyance?

...ns that are factors using gdata require(gdata) drop.levels(dataframe) I know that it is straightforward to recode levels of a factor and to rejig the labels and there are also wonderful ways to reorder the levels. My brain just cannot remember them and I have to relearn it every time I use it. Rec...
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How to generate UML diagrams (especially sequence diagrams) from Java code?

...id, then install GEF from download.eclipse.org/tools/gef/updates/releases Now copy-paste licence from email to Window->Preferences->ObjectAid How to create diagram? objectaid.com/class-diagram – rluks Apr 5 '13 at 22:01 ...
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Java Reflection Performance

... so you've just killed the optimiser, so now both versions are slow. Reflection is, therefore, still damn slow. – gbjbaanb Feb 13 '09 at 23:39 14 ...
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Select DISTINCT individual columns in django?

... The method described below is now available in django 1.4 and is nice if you need ProductOrder instance with field aware distinct ;-) – Jonathan Liuti Oct 16 '12 at 15:03 ...
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Difference between API and ABI

...bels = 123L; int ok = livenMyHills( howManyDecibels); and we needed to know that there is a method livenMyHills(), which takes a long integer parameter. So as a Programming Interface it's all expressed in source code. The compiler turns this into executable instructions which conform to the imple...
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best way to add license section to iOS settings bundle

... I think I've now managed to solve all the problems I was running into. It seems to be best to use group element titles to hold the licenses (this is what Apple do in the iWork apps). There is however a limit on the length of these (and ...
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How do I convert an existing callback API to promises?

...ferreds you can do the following (let's use Q for this example, although Q now supports the new syntax which you should prefer): function getStuffAsync(param) { var d = Q.defer(); getStuff(param, function(err, data) { if (err !== null) d.reject(err); else d.resolve(data); ...
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How to do paging in AngularJS?

... ^^^^ For all new readers see Bogacs comment: items-per-page is now needed in the pagination element. Does not work without it. – IfTrue Sep 10 '15 at 15:47 14 ...
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Why is using onClick() in HTML a bad practice?

...L is a bad practice, because it's not good for semantics. I would like to know what the downsides are and how to fix the following code? ...
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How can I convert an Integer to localized month name in Java?

...here is an easier way to make a monthed calendar though, I do this in code now and I'm not so sure. import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.GregorianCalendar; public String formatMonth(int month, Locale locale) { DateFormat f...