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How to set size for local image using knitr for markdown?

... using this function is that it is portable in the sense that it works for all document formats that knitr supports, so you do not need to think if you have to use, for example, LaTeX or Markdown syntax, to embed an external image. Chunk options related to graphics output that work for normal R plot...
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Looping a video with AVFoundation AVPlayer?

...g movie duration longer than audio/video tracks is the problem. FigPlayer_File is disabling gapless transition because audio track edit is shorter than the movie duration (15.682 vs 15.787). You need to either fix the movie files to have the movie duration and track durations to be same...
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Correct approach to global logging in Golang

...d a pointer to that log.Logger? log.New returns a *Logger which is usually an indication that you should pass the object around as a pointer. Passing it as value would create a copy of the struct (i.e. a copy of the Logger) and then multiple goroutines might write to the same io.Writer concurre...
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Import CSV to SQLite

...l data. If that's the case with your CSV file, then you do not need to manually create the table using the create table command. The .import command will use the first line in your file to determine the column names and create the table accordingly. You still have to include the name of the table in...
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Why should the copy constructor accept its parameter by reference in C++?

... reference, it's by value. To do that you make a copy, and to do that you call the copy constructor. But to do that, we need to make a new value, so we call the copy constructor, and so on... (You would have infinite recursion because "to make a copy, you need to make a copy".) ...
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remove legend title in ggplot

... This will remove all legend titles. For more local control, the guide = guide_legend() command works. To remove the fill legend title, but to keep the color legend title, e.g. scale_fill_brewer(palette = "Dark2", guide = guide_legend(title = ...
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What's the point of JAXB 2's ObjectFactory classes?

..., sometimes you need to create actual JAXBElement objects. They are not usually trivial to create by hand, so the create* methods do the hard work for you. Example (from the XHTML 1.1 schema): @XmlElementDecl(namespace = "http://www.w3.org/1999/xhtml", name = "style", scope = XhtmlHeadType.class) p...
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Can Json.NET serialize / deserialize to / from a stream?

... The current version of Json.net does not allow you to use the accepted answer code. A current alternative is: public static object DeserializeFromStream(Stream stream) { var serializer = new JsonSerializer(); using (var sr = new StreamReader(stream)) u...
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WebKit issues with event.layerX and event.layerY

... I have disabled all my extensions and I still get these warnings with 1.7.2 – basZero May 7 '12 at 7:40 ...
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Eclipse: Can you format code on save?

...checking your eclipse format xml descriptor into source control. That way all members of the team can use it and you don't get to and fro reformatting battles. share | improve this answer ...