· User kokos answered the wonderful Hidden Features of C# question by mentioning the using keyword. Can you elaborate on that? What are the uses of using? Using calls Dispose() after the using -block is left, even if the code throws an exception. So you usually use using for classes that require cleaning up after them, like IO. Updating the using keyword was specifically for templates, and (as was pointed out in the accepted answer) when you are working with non-templates using and typedef are mechanically identical, so … · In a MySQL JOIN, what is the difference between ON and USING()? As far as I can tell, USING() is just more convenient syntax, whereas ON allows a little more flexibility when the column … · In C++11, the using keyword when used for type alias is identical to typedef. 7.1.3.2 A typedef-name can also be introduced by an alias-declaration. The identifier following the using … · Just in case it's not clear from the other answers here: - Do not put a using declaration (or using directive) at file scope in an include file/header! That will cause headaches for users of the … The problem with putting using namespace in the header files of your classes is that it forces anyone who wants to use your classes (by including your header files) to also be 'using' (i.e. seeing … Yes Yes. Either way, when the using block is exited (either by successful completion or by error) it is closed. Although I think it would be better to organize like this because it's a lot easier to see what is … · using var disposable = new Disposable(); // Do something What is the difference between using and await using? How should I decide which one to use? I have been running StyleCop over some C# code, and it keeps reporting that my using directives should be inside the namespace. 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How to Care for Verbena Rigida. Keep a few general tips in mind when caring for Verbena rigida. 1. Pests: While Verbena rigida is a low-maintenance plant and resistant to most pests, it may be visited by mites, aphids, whiteflies, thrips, or leaf miners. While rose verbena will grow almost anywhere and tolerates dry conditions, there are a few things to know when you plan to use this plant as a groundcover. The first thing to figure out is how many plants you will need to cover the area in your garden. Planting Purple Trailing Verbena in your landscape is an excellent way to fill any barren area with bright color! Verbena Canadensis (botanical name) stays very low, and this low spreading variety is an ideal tender groundcover thanks to its dark green. The dianthus varieties from Hilverda are tough, low-growing plants that can be used as lawn edging or other areas that get a lot of foot traffic. 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