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How to request a random row in SQL?

...lue ) FROM table ) ORDER BY num_value LIMIT 1 This works in logarithmic time, regardless of the table size, if num_value is indexed. One caveat: this assumes that num_value is equally distributed in the range 0..MAX(num_value). If your dataset strongly deviates from this assumption, you will get ...
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“The breakpoint will not currently be hit. The source code is different from the original version.”

When debugging in Visual Studio, sometimes I add a breakpoint but it's hollow and VS says "The breakpoint will not currently be hit. The source code is different from the original version." Obviously this prevents me from being able to debug. ...
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Resizing UITableView to fit content

...ntrinsicContentSize to a placeholder value. This is an override for design time. At runtime it will use the override in our ContentSizedTableView class Update: Changed code for Swift 4.2. If you're using a prior version, use UIViewNoIntrinsicMetric instead of UIView.noIntrinsicMetric ...
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How do I launch the Android emulator from the command line?

...reviously launched GUI. Wait until the emulator fully loads, it takes some time. You can read about additional options here. Now you have to install the application to your AVD. Usually during development you just use the same Ant script you used to build the project, just select install target. How...
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Open a file with Notepad in C#

...#? I don't mean reading it by textreader and readline(). I mean open it as an independent file in notepad. 6 Answers ...
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How to set variables in HIVE scripts

...ed to set a few contants in the begging so that I don't hard code dates 10 times in my script. Is something like that possible? – user1678312 Sep 19 '12 at 22:16 ...
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How do I check if a given string is a legal/valid file name under Windows?

I want to include a batch file rename functionality in my application. A user can type a destination filename pattern and (after replacing some wildcards in the pattern) I need to check if it's going to be a legal filename under Windows. I've tried to use regular expression like [a-zA-Z0-9_]+ but ...
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Get an array of list element contents in jQuery

I have a structure like this: 6 Answers 6 ...
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How to return multiple lines JSX in another return statement in React?

Single line works fine 7 Answers 7 ...
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How to manually deprecate members

Unlike Objective-C, Swift has no preprocessor, so is there still a way to manually deprecate members of a class? 4 Answers ...