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How and when to use ‘async’ and ‘await’

...t need the result of LongRunningOperationAsync can be done here //and now we call await on the task int result = await longRunningTask; //use the result Console.WriteLine(result); } public async Task<int> LongRunningOperationAsync() // assume we return an int from this long...
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How do I join two SQLite tables in my Android application?

...after the query? How do you know which id belongs to which table, and what if both tables had the same column name for some column? or if there are multiple items for the second table? – android developer Jan 10 '15 at 23:26 ...
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Chrome ignores autocomplete=“off”

... UPDATE It seems now Chrome ignores the style="display: none;" or style="visibility: hidden; attributes. You can change it to something like: <input style="opacity: 0;position: absolute;"> <input type="password" style="opacity: 0;p...
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How to use Class in Java?

... what they really do behind the scenes over at this question , so we all know that Vector<int[]> is a vector of integer arrays, and HashTable<String, Person> is a table of whose keys are strings and values Person s. However, what stumps me is the usage of Class<> . ...
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Difference between volatile and synchronized in Java

...ariables cannot be reordered with each other. The difference is that it is now no longer so easy to reorder normal field accesses around them. Writing to a volatile field has the same memory effect as a monitor release, and reading from a volatile field has the same memory effect as a monitor acquir...
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Twitter Bootstrap - add top space between rows

...e a couple examples. a.) overwriting - if you overwrite the .row class you now need to go through your project and add an additional class to rows that shouldn't receive the margin b.) editing native code - you inherit a project at work and you want to move up to bootstrap4; OOPS! Nothing looks righ...
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Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V

... There's a dynamic programming solution. We start off knowing 0 keys can make us 0 A's. Then we iterate through for i up to n, doing two things: pressing A once and pressing select all + copy followed by paste j times (actually j-i-1 below; note the trick here: the contents are s...
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What does enumerable mean?

...d Jul 27 '13 at 2:47 Jonathan LonowskiJonathan Lonowski 108k3131 gold badges188188 silver badges191191 bronze badges ...
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Why use pointers? [closed]

I know this is a really basic question, but I've just started with some basic C++ programming after coding a few projects with high-level languages. ...
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How do I configure Notepad++ to use spaces instead of tabs?

... Ah Language, now that makes sense. – deed02392 Dec 5 '13 at 16:05 ...