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Can a class member function template be virtual?

... just indirection, and there is no "runtime figuring out" involved, it is known during compile time that the function to be called is the one pointed to by the n-th pointer in the vtable. "Figuring out" implies there are type checks and such, which is not the case. Once the run-time system figured o...
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How to define custom configuration variables in rails

... Update 1 Very recommended: I'm going with Rails Config gem nowadays for the fine grained control it provides. Update2 If you want a quick solution, then check Jack Pratt's answer below. Although my original answer below still works, this answer is now outdated. I recommend looking...
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Intent - if activity is running, bring it to front, else start a new one (from notification)

... altogether, I suggest you post that as it's own question, I don't really know the answer unfortunately. – Franco Feb 5 at 1:30  |  show 2 mor...
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Build an iOS app without owning a mac? [closed]

...gin developer account you can download Xcode IDE's .dmg file That's all. Now you just install Xcode and start developing iOS apps and test/debug with Simulator.. 2. iPhone/iPad (iOS) app development and Publish to iTunes Store for publishing your app on iTunes store you need to pay (example $99 ...
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(HTML) Download a PDF file instead of opening them in browser when clicked

...at is that this was answered 4 years ago and as Sarim points out, there is now the HTML 5 download attribute that can handle this. I agree, and think Sarim's answer is good (it probably should be the chosen answer if the OP ever returns). However, this answer is still the reliable way to handle it...
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How can I return to a parent activity correctly?

...ng startActivityForResult() and override onActivtyResult() in Activity A. Now in Activity B just call finish() on button Up. So now you directed to Activity A's onActivityResult() without creating of Activity A again.. shar...
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What are sessions? How do they work?

... to store that data server side, give it an "id", and let the client only know (and pass back at every http request) that id. There you go, sessions implemented. Or you can use the client as a convenient remote storage, but you would encrypt the data and keep the secret server-side. Of course there...
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Common elements in two lists

... Use Collection#retainAll(). listA.retainAll(listB); // listA now contains only the elements which are also contained in listB. If you want to avoid that changes are being affected in listA, then you need to create a new one. List<Integer> common = new ArrayList<Integer>(...
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What does “&” at the end of a linux command mean?

... I don’t know for sure but I’m reading a book right now and what I am getting is that a program need to handle its signal ( as when I press CTRL-C). Now a program can use SIG_IGN to ignore all signals or SIG_DFL to restore the defaul...
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How to properly match varargs in Mockito

... for info anyVararg is now deprecated: "@deprecated as of 2.1.0 use any()" – alexbt Nov 13 '16 at 20:12 ...