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How to optimize for-comprehensions and loops in Scala?

... Now, in 2014, I tested this again and for me performance is the following: java -> 0.3s; scala -> 3.6s; scala optimized -> 3.5s; scala functional -> 4s; Looks much better than 3 years ago, but... Still th...
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?

... Regarding the point 2, I would like to know how can you invoke the constructor as any other method call? Because I did not find any way of doing that unless in bytecodes. – Miguel Gamboa Nov 23 '12 at 13:22 ...
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How to find and return a duplicate value in array

... a = ["A", "B", "C", "B", "A"] a.detect{ |e| a.count(e) > 1 } I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set. Looking for faster solution? Here you go! def find_one_using_hash_map(arr...
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error opening HPROF file: IOException: Unknown HPROF Version

...r method and it works! I just should have to install MAT to eclipse and it now works perfectly. thanks – Paulius Vindzigelskis Jun 20 '12 at 12:43 3 ...
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How to create a library project in Android Studio and an application project that uses the library p

...which to use it. After this I add the module dependency (in Andr. Studio). Now I can use/edit the module in each project while keeping is in sync. Not sure if it is the right way to go, but for now it seems to work quite well! This works better than a local maven repo. – Peter ...
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What does && mean in void *p = &&abc;

...id *p = &&abc; . What is the significance of && here? I know about rvalue references but I think && used in this context is different. What does && indicate in void *p = &&abc; ? ...
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any tool for java object to object mapping? [closed]

... looking for automated tool before start writing my own. I just wanted to know if there any free tool available for the same. ...
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How to install latest version of git on CentOS 7.x/6.x

... yum install gcc perl-ExtUtils-MakeMaker Step 2: Uninstall old Git RPM Now remove any prior installation of Git through RPM file or Yum package manager. If your older version is also compiled through source, then skip this step. # yum remove git Step 3: Download and Compile Git Source Downlo...
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Looping in a spiral

...wered Oct 12 '09 at 15:29 Tom J NowellTom J Nowell 8,0791616 gold badges5555 silver badges8888 bronze badges ...
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Prototypical inheritance - writing up [duplicate]

... function it uses this. The value of this will be the invoking object; for now let's say it's the current instance so for bob.walk() "this" will be bob. (more on "this" and the invoking object later). If ben was waiting for a red light and and bob was at a green light; then you'll invoke walk() on ...