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How to get screen dimensions as pixels in Android

...e use case you're describing however, a margin/padding in the layout seems more appropriate. Another way is: DisplayMetrics A structure describing general information about a display, such as its size, density, and font scaling. To access the DisplayMetrics members, initialize an object like th...
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How to get error message when ifstream open fails

... Every system call that fails update the errno value. Thus, you can have more information about what happens when a ifstream open fails by using something like : cerr << "Error: " << strerror(errno); However, since every system call updates the global errno value, you may have iss...
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Show a number to two decimal places

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Simplest way to serve static data from outside the application server in a Java web application

...u can call it by http://example.com/files/image.png. This way you can have more control over the requests than the DefaultServlet does, such as providing a default image (i.e. if (!file.exists()) file = new File("/path/to/files", "404.gif") or so). Also using the request.getPathInfo() is preferred a...
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How to change the text of a button in jQuery?

...); Your button could also be a link. You'll need to post some HTML for a more specific answer. EDIT : These will work assuming you've wrapped it in a .click() call, of course EDIT 2 : Newer jQuery versions (from > 1.6) use .prop rather than .attr EDIT 3 : If you're using jQuery UI, you need...
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Is there a faster/shorter way to initialize variables in a Rust struct?

...y question and with the default. That certainly suits me better and is far more concise. Being unfamiliar with the syntax, one minor problem that I had was not knowing the syntax for ALL defaults. IE: I used "= cParams{iInsertMax : 10, ..Default::default()};", but I actually want "iInstanceMax" to a...
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How to change an input button image using CSS?

... Safari 3 and up allow you to style buttons however you want. And to be more compatible, use a <button> instead. – eyelidlessness Oct 12 '08 at 16:32 3 ...
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Why is the gets function so dangerous that it should not be used?

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Compiling with g++ using multiple cores

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Check if application is installed - Android

...s in a PackageManager instead of a Context, so that the method is slightly more flexibly usable and doesn't violate the law of Demeter. You can use the method without access to a Context instance, as long as you have a PackageManager instance. Use it like this: public void someMethod() { // .....