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How to empty a redis database?
...es downtime):
Stop Redis.
Delete RDB file (find location in redis.conf).
Start Redis.
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“Width equals height” constraint in Interface Builder
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To start, control drag diagonally from the button to itself. A contextual menu will appear, where you can add width and height constraints. Shift+Click on each; a checkmark will appear indicating that you have added the constrai...
How do you switch pages in Xamarin.Forms?
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Once I started using NavigationPage, everything fell into place. Thanks
– Eric
Aug 12 '14 at 3:55
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Virtual member call in a constructor
...is).
Also in .NET objects do not change type as they are constructed, but start out as the most derived type, with the method table being for the most derived type. This means that virtual method calls always run on the most derived type.
When you combine these two facts you are left with the prob...
What does threadsafe mean?
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}
Now thread A and thread B both would like to execute AddOne(). but A starts first and reads the value of myInt (0) into tmp. Now for some reason the scheduler decides to halt thread A and defer execution to thread B. Thread B now also reads the value of myInt (still 0) into it's own variable t...
How to detect online/offline event cross-browser?
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Starting with Firefox 41: updates this property when the OS reports a change in network connectivity on Windows, Linux, and OS X. (according to the docs you've mentioned). So it's not only offline if you're browsing with the ...
How to change owner of PostgreSql database?
...ust be member of role ... = DOES NOT WORK WITH RDS
– StartupGuy
Jul 25 '18 at 7:44
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Dynamic LINQ OrderBy on IEnumerable / IQueryable
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@Dave - you need to start with IQueryable<T>, so if you have something like List<T> (which is IEnumerable<T>) you may need to use AsQueryable() - for example var sorted = someList.AsQueryable().OrderBy("Foo.Bar");
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
...alues of (product.id + $index) will be unique. For instance, if your array starts with a product with id of 5 and after that there's a product with id of 4, their values of (product.id + $index) will both be 5 (5+0 for the first product, 4+1 for the second) and you'll still get the Duplicates in a r...
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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ah, so you're using MySQL. That's what you should start from! I will update answer soon.
– Maksym Gontar
Mar 6 '09 at 7:53
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