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What's the difference between Unicode and UTF-8? [duplicate]

... 2, 3, 4 like this: 00000001 00000010 00000011 00000100 Our data is now translated into binary and can now be saved to disk. All together now Say an application reads the following from the disk: 1101000 1100101 1101100 1101100 1101111 The app knows this data represent a Un...
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What is an existential type?

...X they're saying: You can plug in whatever type you want, I don't need to know anything about the type to do my job, I'll only refer to it opaquely as X. When someone defines an existential type ∃X they're saying: I'll use whatever type I want here; you wont know anything about the type, so you c...
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scheduleAtFixedRate vs scheduleWithFixedDelay

... executor.shutdown() } else { Thread.sleep(2000L) val now = System.currentTimeMillis() time += now - start System.out.println("Total $time delay ${now - start}\n") start = now } }, 0L, 1000L, TimeUnit.MILLISECONDS) And see the results: | scheduleWi...
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Akka or Reactor [closed]

...which is what you imply by “distributed”). For “modular” I do not know enough about Reactor, in particular how you can look up active components and manage them. If you start a real project now and need something which satisfies your first sentence, then I don’t think it would be controve...
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What is the difference between typeof and instanceof and when should one be used vs. the other?

... instanceof Object returns false, and doesn't throw an exception. I don't know how recent that change is, but it makes instanceof more appealing. – Cypress Frankenfeld Jun 26 '13 at 16:01 ...
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Xcode warning: “Multiple build commands for output file”

...t. (it's better to make a backup of your project file before deleting it) Now build the project again. The warning should disappear now. (this answer is for a previous version of xcode) share | imp...
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Git error on git pull (unable to update local ref)

...te local ref, when doing a pull in SourceTree. We used : git gc --prune=now This removes any duplicate reference objects which should fix the issue. Here are a few links where you can learn more about git references and pruning : git tip of the week git-prune documentation git references ...
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UIButton Long Press Event

...UIGestureRecognizerStateEnded ) { NSLog(@"Long Press"); } } Now this would be the basic approach. You can also set the minimum duration of the press and how much error is tolerable. And also note that the method is called few times if you after recognizing the gesture so if you want t...
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...式如下: systime() 实例: $ awk '{ now = systime(); print now }' strftime函数使用C库中的strftime函数格式化时间。格式如下: systime( [format specification][,timestamp] ) Table 3. 日期和时间格式说明符 ...
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Where can I find “make” program for Mac OS X Lion?

... Indeed, installing new Xcode resolved my problem. Unfortunately I didn't know that after doing a Mac OS X upgrade I also have to upgrade to the latest Xcode version. – Roman Kagan Jul 20 '11 at 20:05 ...