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Does MySQL ignore null values on unique constraints?

... this little feature has been very difficult to find an answer to that does not require adding a new column to the database or upgrading MySQL on a very old application. I was really looking for a solution like Postgres where I can use COALESCE but it seems the...
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Throw keyword in function's signature

...ble. And it is not well supported in any case. (MSVC ignores exception specifications, except throw(), which it interprets as a guarantee that no exception will be thrown. share | improve this answe...
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How do I select text nodes with jQuery?

... up with: var getTextNodesIn = function(el) { return $(el).find(":not(iframe)").addBack().contents().filter(function() { return this.nodeType == 3; }); }; getTextNodesIn(el); Note: If you're using jQuery 1.7 or earlier, the code above will not work. To fix this, replace addBack()...
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How to get VM arguments from inside of Java application?

I need to check if some option that can be passed to JVM is explicitly set or has its default value. 5 Answers ...
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Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:

... I have modified the accepted answer's code to be more generic - it handles the cases where the view does clip subviews to its bounds, may be hidden, and more importantly : if the subviews are complex view hierarchies, the correct subvi...
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How do I empty an array in JavaScript?

Is there a way to empty an array and if so possibly with .remove() ? 18 Answers 18 ...
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Calling a function every 60 seconds

Using setTimeout() it is possible to launch a function at a specified time: 13 Answers ...
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CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网 - 专注IT技能提升

...s Maunder's MFC Grid 2.25 [^]. But unfortunately, for me it needed some modifications to get it to work the way I wanted. The one modification I present here is the CGridCellNumeric class, which is used to display and edit numbers and currencies. This class is a severe modification of the CGridCellN...
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CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网 - 专注IT技能提升

...s Maunder's MFC Grid 2.25 [^]. But unfortunately, for me it needed some modifications to get it to work the way I wanted. The one modification I present here is the CGridCellNumeric class, which is used to display and edit numbers and currencies. This class is a severe modification of the CGridCellN...
https://www.tsingfun.com/html/... 

CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网 - 专注IT技能提升

...s Maunder's MFC Grid 2.25 [^]. But unfortunately, for me it needed some modifications to get it to work the way I wanted. The one modification I present here is the CGridCellNumeric class, which is used to display and edit numbers and currencies. This class is a severe modification of the CGridCellN...