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How to pass the values from one activity to previous activity

... Intent(this,TextEntryActivity.class); startActivityForResult(i, STATIC_INTEGER_VALUE); Within the subactivity, rather than just closing the Activity when a user clicks the button, you need to create a new Intent and include the entered text value in its extras bundle. To pass it back to the p...
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Is the “struct hack” technically undefined behavior?

...ot strictly conforming http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_051.html In the C99 Rationale document the C Committee adds: The validity of this construct has always been questionable. In the response to one Defect Report, the Committee decided that it was undefined behavior bec...
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Find location of a removable SD card

...question is about external SD. How to get a path like "/mnt/sdcard/external_sd" (it may differ from device to device)? Android has no concept of "external SD", aside from external storage, as described above. If a device manufacturer has elected to have external storage be on-board flash and also h...
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What are the differences between type() and isinstance()?

...ne is not better; they are for different things. – EL_DON Apr 30 '17 at 2:30 Please can you tell me - why have you use...
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How to make CSS width to fill parent?

...dited Jul 29 '15 at 18:10 jak89 _1 2588 bronze badges answered Oct 1 '14 at 12:31 TigsarTigsar ...
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ctypes - Beginner

...estlib.so -fPIC testlib.c # or... for Mac OS X $ gcc -shared -Wl,-install_name,testlib.so -o testlib.so -fPIC testlib.c Then, write a wrapper using ctypes: testlibwrapper.py import ctypes testlib = ctypes.CDLL('/full/path/to/testlib.so') testlib.myprint() Now execute it: $ python testlibwrapper...
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return statement vs exit() in main()

...ay be even a core. If you need to exit w/o calling static destructors, use _exit . – user3458 Jan 20 '09 at 14:46 7 ...
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C++ templates Turing-complete?

...te<typename List, int N, typename = void> struct GetItem { static_assert(N > 0, "index cannot be negative"); static_assert(GetSize<List>::value > 0, "index too high"); typedef typename GetItem<typename List::tail, N-1>::type type; }; template<typename List>...
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Storing Data in MySQL as JSON

...nefit very much at all from RDBMS, and could be stored in JSON just by json_encoding($_POST['entires']) if you have the correct HTML form structure. I am glad you are happy using MongoDB and I hope that it continues to serve you well, but don't think that MySQL is always going to be off your radar...
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Sort points in clockwise order?

...wered Aug 10 '11 at 15:01 static_rttistatic_rtti 43.7k4141 gold badges121121 silver badges177177 bronze badges ...