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Why isn't sizeof for a struct equal to the sum of sizeof of each member?

... { char a[3]; short int b; long int c; char d[3]; }; Now, you might think that it ought to be possible to pack this structure into memory like this: +-------+-------+-------+-------+ | a | b | +-------+-------+-------+-------+ | b | c ...
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Create list of single item repeated N times

...'string'] * len(columns) Mutable items I've used Python for a long time now, and I have never seen a use-case where I would do the above with a mutable instance. Instead, to get, say, a mutable empty list, set, or dict, you should do something like this: list_of_lists = [[] for _ in columns] T...
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How can I make Bootstrap columns all the same height?

...er screens before the columns stack vertically) Bootstrap 4 Flexbox is now used by default in Bootstrap 4 so there is no need for the extra CSS to make equal height columns: http://www.codeply.com/go/IJYRI4LPwU Example: <div class="container"> <div class="row"> <div ...
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Does Python have “private” variables in classes?

... self.__var = 123 def printVar(self): print self.__var Now, if you try to access __var outside the class definition, it will fail: >>>x = A() >>>x.__var # this will return error: "A has no attribute __var" >>>x.printVar() # this gives back 123 Bu...
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Error to use a section registered as allowDefinition='MachineToApplication' beyond application level

...l of my aspx pages in my /portal/ directory has this error message, and I know it's a common one. I have googled this error message to no end, and I see a lot of posts telling me to configure the /portal/ folder as an application in IIS (which I have), and more posts telling me I have nested web.co...
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Making the Android emulator run faster

... UPDATE: Now that an Intel x86 image is available, the best answer is by zest above. As CommonsWare has correctly pointed out, the emulator is slow because it emulates an ARM CPU, which requires translation to Intel opcodes. This vir...
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How to make a JSONP request from Javascript without JQuery?

...ion which logs all items in someone's home. My application is set up and I now want to retrieve all the items in the main bedroom. My application is on app.home.com. The apis I need to load data from are on api.home.com. Unless the server is explicitly set up to allow it, I cannot use ajax to load t...
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Does have to be in the of an HTML document?

...HEAD O O (%head.content;) +(%head.misc;) -- document head --> Yes, I know. DTDs are hard to read. This is the only place where the STYLE element occurs, so implicitly it's invalid elsewhere. share | ...
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How do I enumerate through a JObject?

... Now how do I use it for nested JSON? For example, if the "value" contains another set of key:value pairs, how can I use the JToken value to iterate through next set of pairs? – AlbatrossCafe ...
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How to make vi redraw screen?

... I've been using ctrl+L for such purposes for 35 years now, what's wrong with it? share | improve this answer | follow | ...