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Factors in R: more than an annoyance?

...of the basic data types in R is factors. In my experience factors are basically a pain and I never use them. I always convert to characters. I feel oddly like I'm missing something. ...
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What is the point of a private pure virtual function?

...an be overridden in the derived classes. Methods of derived classes can't call virtual functions from the base class, but they can provide their own implementation for them. According to Herb Sutter, having public non-virtual interface in the base class and a private implementation that can be custo...
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Insert new column into table in sqlite?

... ADD COLUMN COLNew {type}; Second, and more complicatedly, but would actually put the column where you want it, would be to rename the table: ALTER TABLE {tableName} RENAME TO TempOldTable; Then create the new table with the missing column: CREATE TABLE {tableName} (name TEXT, COLNew {type} DE...
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Gradle - getting the latest release version of a dependency

...I've mistaken that with the plugin versions, cause for Maven 3 it does not allow RELEASE/LATEST anymore. But it's of course bad practice to use such version identifiers. – khmarbaise Apr 29 '12 at 14:26 ...
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Why does String.valueOf(null) throw a NullPointerException?

... that the most specific method is chosen. A char[] is-an Object, but not all Object is-a char[]. Therefore, char[] is more specific than Object, and as specified by the Java language, the String.valueOf(char[]) overload is chosen in this case. String.valueOf(char[]) expects the array to be non-nu...
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Is it OK to leave a channel open?

...ose a channel when it is important to tell the receiving goroutines that all data have been sent. A channel that the garbage collector determinies to be unreachable will have its resources reclaimed whether or not it is closed. (Don't confuse this with the close operation for open files. It ...
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Routing: The current request for action […] is ambiguous between the following action methods

I have a View called Browse.chtml , where the user can enter a search term, or leave the search term blank. When entering the search term, I want to direct the page to http://localhost:62019/Gallery/Browse/{Searchterm} and when nothing is entered, I want to direct the browser to http://localho...
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vim command to restructure/force text to 80 columns

I know there are ways to automatically set the width of text in vim using set textwidth (like Vim 80 column layout concerns ). What I am looking for is something similar to = (the indent line command) but to wrap to 80. The use case is sometimes you edit text with textwidth and after joining li...
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CSS Input with width: 100% goes outside parent's bound

...el, an element's width and height are applied to its content box. Padding falls outside of that content box and increases the element's overall size. As a result, if you set an element with padding to 100% width, it's padding will make it wider than 100% of its containing element. In your context, i...
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req.query and req.param in ExpressJS

...d: "5"} req.param is a function that peels parameters out of the request. All of this can be found here. UPDATE If the verb is a POST and you are using bodyParser, then you should be able to get the form body in you function with req.body. That will be the parsed JS version of the POSTed form. ...