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When can I use a forward declaration?

I am looking for the definition of when I am allowed to do forward declaration of a class in another class's header file: 1...
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How can I select the first day of a month in SQL?

...dOfMonth will give you the last day of the month. – hallizh Nov 3 '15 at 13:47 3 How can I determ...
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Using Build Flavors - Structuring source folders and build.gradle correctly

... For the Java source: src/main/java src/flavor1/java src/debug/java are all 3 used to create a single output. This means they can't define the same class. If you want to have a different version of the same class in the two flavor you'll need to create it in both flavors. src/flavor1/java/com/f...
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AI2 Media Notification

...in several apps, tapping an action button triggers the associated event in all apps at the same time. This is due to the global nature of the broadcast receivers used. Solution: The intents for the action buttons are individualized with the app name. When a broadcast is received, the name is c...
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How do I use shell variables in an awk script?

...o it becomes a part of it. If you want to make an awk that changes dynamically with use of variables, you can do it this way, but DO NOT use it for normal variables. variable="line one\nline two" awk 'BEGIN {print "'"$variable"'"}' line one line two Here is an example of code injection: variabl...
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Resizing an iframe based on content

...policy was also an issue. After many hours spent trawling google, we eventually found a (somewhat..) workable solution, which you may be able to adapt to your needs. There is a way around the same origin policy, but it requires changes on both the iframed content and the framing page, so if you hav...
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Calculating sum of repeated elements in AngularJS ng-repeat

...to this is that it iterates over the collection twice. this is fine for small collections, but what if the collection is rather large? it seems like in ng-repeat there should be a way to have a running sum on a given object field. – icfantv Aug 6 '14 at 16:14...
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HTML if image is not found

... Seems works in all major browsers. Just swap default and original. So that object renders original image and img default one – Evgeny Dec 16 '14 at 10:28 ...
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How to install a previous exact version of a NPM package?

I used nvm to download node v0.4.10 and installed npm to work with that version of node. 10 Answers ...
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Best way to implement keyboard shortcuts in a Windows Forms application?

...when pressing a shortcut is required to suppress input but nevertheless to allow a separate MenuStrip event to fire. ProcessCmdKey approach would force the duplication of event firing logic. – Saul Jun 10 '14 at 11:13 ...