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Confused by python file mode “w+”
... forget this, the f.read() call will try to read from the end of the file, and will return an empty string.
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What is the difference between tree depth and height?
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The difference between them is that in one case you count number of nodes and in other number of edges on the shortest path between root and concrete node.
Which is which?
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Remove rows with all or some NAs (missing values) in data.frame
... 1 2 3 2
but using complete.cases is quite a lot more clear, and faster.
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How to exit a 'git status' list in a terminal?
I'm new to Git and the terminal. How can I exit a listing mode generated by the git status command?
14 Answers
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How to run a command in the background and get no output?
I wrote two shell scripts a.sh and b.sh . In a.sh and b.sh I have a infinite for loop and they print some output to the terminal. I want to write another script which calls both a.sh and b.sh but I want the user to regain control of the terminal immediately, instead of having the script r...
Convert duration to hours:minutes:seconds (or similar) in Rails 3 or Ruby
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Also, if you want this to be very specific and not "round" the duration, check out Radar's gem: github.com/radar/distance_of_time_in_words. Drop-in replacement for distance_of_time_in_words and you can get the rounded number by passing vague: true as an option.
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Copy constructor versus Clone()
...uld one implement the copy constructor, or rather derive from ICloneable and implement the Clone() method?
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Split value from one field to two
I've got a table field membername which contains both the last name and the first name of users. Is it possible to split those into 2 fields memberfirst , memberlast ?
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Disable XML validation in Eclipse
My Eclipse validates XML files every time I save a file and it takes a while to validate them.
The project is created using gwt-maven-plugin.
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Android splash screen image sizes to fit all devices
... have a full screen PNG I want to display on splash. Only one error there, and I have no idea
what size to put in every drawable folder ( ldpi , mdpi , hdpi , and xhdpi ). My application is supposed to run good and beautiful on all phones and tablets. What sizes (in pixels) should I create so the...