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What does @: (at symbol colon) mean in a Makefile?

...nd nothing gets done. For example (from Linux's scripts/Makefile.clean): __clean: $(subdir-ymn) ifneq ($(strip $(__clean-files)),) +$(call cmd,clean) endif ifneq ($(strip $(__clean-dirs)),) +$(call cmd,cleandir) endif ifneq ($(strip $(clean-rule)),) +$(clean-rule) endif @: ...
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Why doesn't Java allow to throw a checked exception from static initialization block?

Why doesn't Java allow to throw a checked exception from a static initialization block? What was the reason behind this design decision? ...
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Can I use assert on Android devices?

...t. You can do import static junit.framework.Assert.*; now you can use all the functions like assertTrue, assertEquals, assertNull that are provided in the junit framework. Be careful not to import the Junit4 framework through eclipse, that would be the org.junit package. You have to use the j...
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Which is the preferred way to concatenate a string in Python?

...b): 0.0132720470428 a.join(a): 0.114929914474 Well, append/join is marginally faster there if you are using extremely long strings (which you usually aren't, what would you have a string that's 100MB in memory?) But the real clincher is Python 2.3. Where I won't even show you the timings, because...
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Android Writing Logs to text File

... code of Mine but then this method creates file but contains nothing. Basically I want to read previous contents of the file and then append my data with the existing content. ...
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Android View.getDrawingCache returns null, only null

... sorry, personally, can't help you with your question :'( -> nice that it worked :) – cV2 Jul 26 '13 at 11:36 ...
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What is the difference between a definition and a declaration?

...// extern can be omitted for function declarations class foo; // no extern allowed for type declarations A definition actually instantiates/implements this identifier. It's what the linker needs in order to link references to those entities. These are definitions corresponding to the above declara...
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CORS - How do 'preflight' an httprequest?

...t involves configuring the server responses to include the "Access-Control-Allow-Origin" header and 'preflight' requests with and OPTIONS request. I got the idea from this post : Getting CORS working ...
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Static nested class in Java, why?

...ike any other top-level class. In effect, a static nested class is behaviorally a top-level class that has been nested in another top-level class for packaging convenience. There is no need for LinkedList.Entry to be top-level class as it is only used by LinkedList (there are some other interface...
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Get controller and action name from within controller?

...outeValues["id"]; else if (HttpContext.Current.Request.QueryString.AllKeys.Contains("id")) return HttpContext.Current.Request.QueryString["id"]; return string.Empty; } public static string Controller(this HtmlHelper htmlHelper) { var routeValues = Ht...