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JRuby on Rails vs. Ruby on Rails, what's difference?

...es mentions allowed me to do multithreading, which, while tricky, unlocked orders of magnitude performance benefits. A very large Ruby on Rails app ported and ran in an hour, gems and all. The only actual glitch was that Java's regexes are slightly different than Ruby's. That's a monumental achiev...
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How to install APK from PC?

... Remember in 4.2+ enable first adb Debugging. Quoted from above link: In order to use adb with a device connected over USB, you must enable USB debugging in the device system settings, under Developer options. On Android 4.2 and higher, the Developer options screen is hidden by default. To make i...
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How to create a release signed apk file using Gradle?

...imilar and relative to: $HOME/projects/mydev/MyApp/app/build.gradle. So in order to point to the MyApp-release-key.jks file, what we need to put here is: ../../../MyApp-release-key.jks Here, we also chose the "myapp" alias for the key. Then the final file should look: storePassword=myStorePasswor...
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How do I clear the terminal screen in Haskell?

... @Pradeep: No need to shout. (See en.wikipedia.org/wiki/All_caps#Internet ) – Jared Updike Mar 18 '10 at 18:57 add a comment  |  ...
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How to check task status in Celery?

...-case scenario. By default, Celery does not record a "running" state. In order for Celery to record that a task is running, you must set task_track_started to True. Here is a simple task that tests this: @app.task(bind=True) def test(self): print self.AsyncResult(self.request.id).state When...
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What killed my process and why?

... I'd also suggest using dmesg -T in order to get readable timestamps – gukoff Nov 22 '17 at 11:05 ...
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Make a negative number positive

... Note the edge cases, e.g. Math.abs(Integer.MIN_VALUE) = Integer.MIN_VALUE. – Zach Scrivena Jan 30 '09 at 0:24 ...
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how to check the jdk version used to compile a .class file [duplicate]

.... Useful if you don't have access to javap. ref: en.wikipedia.org/wiki/Java_class_file#General_layout – Jim Apr 24 '14 at 11:19 19 ...
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Datatype for storing ip address in SQL Server

... IPv4 is an ordered sequence of four bytes. That IS it's domain, and in storage format that's a BIN(4). The storage format will not interfere with performance because it's the optimal format. The conversion function might (because udf'...
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How do I specify “close existing connections” in sql script

...Had the same problem with ALTER DATABASE not being added to the script. In order for me to get it added to the script I had to make sure I had a process running (active connection) against that database when the script was generated. – Gilbert Sep 5 '13 at 14:3...