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What does the ??!??! operator do in C?

...II", # was replaced with £. In other regions, maybe "ASCII" had no braces etc. – Steve314 Oct 20 '11 at 4:06 7 ...
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Defining custom attrs

... to use an attr in more than one place I put it in the root element. Note, all attributes share the same global namespace. That means that even if you create a new attribute inside of a <declare-styleable> element it can be used outside of it and you cannot create another attribute with the sa...
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Android Task Affinity Explanation

...owing. If you close E, D will be shown. If you close D, C will be shown. etc. Notice that Activities B and D are the same activity. What if the user were to make some modifications to the D weather screen, and then decided to close the activity, then close the C Map view? Then the user would be...
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What is process.env.PORT in Node.js?

...t may independently configure the process.env.PORT variable for you; after all, your script runs in their environment. Amazon's Elastic Beanstalk does this. If you try to set a static port value like 3000 instead of process.env.PORT || 3000 where 3000 is your static setting, then your application w...
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Default value in Go's method

...s on the subject, but here are some specific examples. **Option 1:** The caller chooses to use default values // Both parameters are optional, use empty string for default value func Concat1(a string, b int) string { if a == "" { a = "default-a" } if b == 0 { b = 5 } return fmt.S...
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Insert a commit before the root commit in Git?

...ids touching the working copy or the index or which branch is checked out, etc. Create a tree object for an empty directory: tree=`git hash-object -wt tree --stdin < /dev/null` Wrap a commit around it: commit=`git commit-tree -m 'root commit' $tree` Create a reference to it: git branch new...
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Why doesn't JavaScript support multithreading?

...All Chrome does is separate multiple components (different tabs, plug-ins, etcetera) into separate processes, but I can’t imagine a single page having more than one JavaScript thread. You can however use, as was suggested, setTimeout to allow some sort of scheduling and “fake” concurrency. Th...
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Make a div fill the height of the remaining screen space

...nt taking up the rest screen. If so, this post may help, it works on IE7+, etc. http://blog.stevensanderson.com/2011/10/05/full-height-app-layouts-a-css-trick-to-make-it-easier/ And here are some snippets from that post: @media screen { /* start of screen rules. */ /* Generic ...
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Does MySQL included with MAMP not include a config file?

... Default options are read from the following files in the given order: /etc/my.cnf /etc/mysql/my.cnf /Applications/MAMP/conf/my.cnf ~/.my.cnf Copy one of the variants in /Applications/MAMP/Library/support-files/ to one of the locations in mysqld's search order above, and you should be good to g...
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How do I read all classes from a Java package in the classpath?

... If you have Spring in you classpath then the following will do it. Find all classes in a package that are annotated with XmlRootElement: private List<Class> findMyTypes(String basePackage) throws IOException, ClassNotFoundException { ResourcePatternResolver resourcePatternResolver = ne...