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Should I use a data.frame or a matrix?

... Something not mentioned by @Michal is that not only is a matrix smaller than the equivalent data frame, using matrices can make your code far more efficient than using data frames, often considerably so. That is one reason why internally, a lot of R functions will coerce to matrices data th...
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What is the best scripting language to embed in a C# desktop application? [closed]

... I've used CSScript with amazing results. It really cut down on having to do bindings and other low level stuff in my scriptable apps. share | improve this answer ...
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Does every web request send the browser cookies?

...RL requested is within the same domain and path defined in the cookie (and all of the other restrictions -- secure, httponly, not expired, etc) hold, then the cookie will be sent for every request. share | ...
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What's the difference between nohup and ampersand

... doesn't (except the shell is confgured that way or doesn't send SIGHUP at all). Normally, when running a command using & and exiting the shell afterwards, the shell will terminate the sub-command with the hangup signal (kill -SIGHUP <pid>). This can be prevented using nohup, as it catche...
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Getting Spring Application Context

Is there a way to statically/globally request a copy of the ApplicationContext in a Spring application? 16 Answers ...
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Handling warning for possible multiple enumeration of IEnumerable

... The problem with taking IEnumerable as a parameter is that it tells callers "I wish to enumerate this". It doesn't tell them how many times you wish to enumerate. I can change the objects parameter to be List and then avoid the possible multiple enumeration but then I don't get the highes...
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What is a 'Closure'?

... scope When you declare a local variable, that variable has a scope. Generally, local variables exist only within the block or function in which you declare them. function() { var a = 1; console.log(a); // works } console.log(a); // fails If I try to access a local variable, most languag...
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How do I prevent commands from showing up in Bash history?

... I don't want this to be recorded in Bash history, because I might accidentally run the same command again by reverse-i-search . Is there a good way to prevent this from happening? ...
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How can I count text lines inside an DOM element? Can I?

... @Chetan - setting text dimensions in pixels is generally considered a bad thing. astahost.com/Sizes-Webdesign-Em-Vs-Px-t8926.html – annakata Apr 24 '09 at 8:35 ...
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How do I make my GUI behave well when Windows font scaling is greater than 100%

...vides caveats and cautions against assuming DPI-awareness is easy. I generally avoid DPI-aware scaling with TForm.Scaled = True. DPI awareness is only important to me when it becomes important to customers who call me and are willing to pay for it. The technical reason behind that point of view i...