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Android : Check whether the phone is dual SIM

... Update 23 March'15 : Official multiple SIM API is available now from Android 5.1 onwards Other possible option : You can use Java reflection to get both IMEI numbers. Using these IMEI numbers you can check whether the phone is a DUAL SIM or not. Try following activity : import andro...
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Get elements by attribute when querySelectorAll is not available without using libraries?

... You could write a function that runs getElementsByTagName('*'), and returns only those elements with a "data-foo" attribute: function getAllElementsWithAttribute(attribute) { var matchingElements = []; var allElements = document.getElementsByTagName('*'); for (var i = 0, n = allEle...
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Map over object preserving keys

...h Underscore Underscore provides a function _.mapObject to map the values and preserve the keys. _.mapObject({ one: 1, two: 2, three: 3 }, function (v) { return v * 3; }); // => { one: 3, two: 6, three: 9 } DEMO With Lodash Lodash provides a function _.mapValues to map the values and pre...
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How can I load an object into a variable name that I specify from an R data file?

... Do saveRDS and readRDS, correspondingly, save and restore all object's attributes, including ones created by an application (via attr)? I tried to use this approach instead of save and load, trying to find a workaround for my problem. H...
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On localhost, how do I pick a free port number?

I'm trying to play with inter-process communication and since I could not figure out how to use named pipes under Windows I thought I'll use network sockets. Everything happens locally. The server is able to launch slaves in a separate process and listens on some port. The slaves do their work and s...
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How can I have two fixed width columns with one flexible column in the center?

I'm trying to set up a flexbox layout with three columns where the left and right columns have a fixed width, and the center column flexes to fill the available space. ...
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Remove border from buttons

I tried to create buttons and insert my own images instead of the standard button images. However, the gray border from the standard buttons still remains, showing on the outside of my black button images. ...
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Automatic counter in Ruby for each?

I want to use a for-each and a counter: 8 Answers 8 ...
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Xcode 5.1 - No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=i

...: Delete the "Pods" project from the workspace in the left pane of Xcode and close Xcode. Run "pod install" from the command line to recreate the "Pods" project. Re-open Xcode and make sure "Build Active Architecture Only" is set to "No" in the build settings of both the "Pods" project and your ow...
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Creating and playing a sound in swift

So what I want to do is create and play a sound in swift that will play when I press a button, I know how to do it in Objective-C, but does anyone know how to in Swift? ...