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How to calculate the SVG Path for an arc (of a circle)

... This is super! Note that the arcSweep variable is actually controlling the large-arc-flag svg A parameter. In the above code, the value for the sweep-flag parameter is always zero. arcSweep should probably be renamed to something like longArc. – Steven Gr...
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Convert a positive number to negative in C#

...itive ones negative. This approach has a single flaw. It doesn't work for all integers. The range of Int32 type is from "-231" to "231 - 1." It means there's one more "negative" number. Consequently, Math.Abs(int.MinValue) throws an OverflowException. The correct way is to use conditional stateme...
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How do you design object oriented projects? [closed]

.... If you're a Java developer, NetBeans 6.7 from Sun has a UML module that allows for diagramming as well as round-trip engineering and it's FREE. Eclipse (an open source Java IDE), also has a modeling framework, but I have no experience with it. You may also want to try out ArgoUML, an open sour...
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How can I have ruby logger log output to stdout as well as file?

...g.log", "a") Logger.new MultiIO.new(STDOUT, log_file) Every time Logger calls puts on your MultiIO object, it will write to both STDOUT and your log file. Edit: I went ahead and figured out the rest of the interface. A log device must respond to write and close (not puts). As long as MultiIO re...
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AngularJS - difference between pristine/dirty and touched/untouched

... $pristine/$dirty tells you whether the user actually changed anything, while $touched/$untouched tells you whether the user has merely been there/visited. This is really useful for validation. The reason for $dirty was always to avoid showing validation responses until t...
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Formula to determine brightness of RGB color

...Note that both of these emphasize the physiological aspects: the human eyeball is most sensitive to green light, less to red and least to blue. – Bob Cross Feb 27 '09 at 19:28 18 ...
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Why do I get “a label can only be part of a statement and a declaration is not a statement” if I hav

... The language standard simply doesn't allow for it. Labels can only be followed by statements, and declarations do not count as statements in C. The easiest way to get around this is by inserting an empty statement after your label, which relieves you from keepin...
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How should I use git diff for long lines?

...nment variable. If you don't mind about paging (for example, your terminal allows you to scroll back) you might try explicitly setting GIT_PAGER to empty to stop it using a pager. Under Linux: $ GIT_PAGER='' git diff Without a pager, the lines will wrap. If your terminal doesn't support coloured...
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What is the difference between JSF, Servlet and JSP?

...r Pages) JSP is a Java view technology running on the server machine which allows you to write template text in client side languages (like HTML, CSS, JavaScript, ect.). JSP supports taglibs, which are backed by pieces of Java code that let you control the page flow or output dynamically. A well-kno...
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Difference between decimal, float and double in .NET?

...n a decimal form, and expect exact results in decimal representations; not all decimal numbers are exactly representable in binary floating point – 0.1, for example – so if you use a binary floating point value you'll actually get an approximation to 0.1. You'll still get approximations when usi...