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What is the best regular expression to check if a string is a valid URL?

How can I check if a given string is a valid URL address? 55 Answers 55 ...
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vagrant up failed, /dev/vboxnetctl: no such file or directory

...untu 16.04, I followed steps 1-3 here and it solved my issues (virtual box now up and running). Thanks! – NineToeNerd Jan 14 '18 at 4:56 ...
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How do you configure logging in Hibernate 4 to use SLF4J

...fact has a provided scope dependency on the artifact slf4j:slf4j. As we now have added the org.slf4j:log4j-over-slf4j artifact, org.slf4j:log4j-over-slf4j mimicks the slf4j:slf4j artifact. Therefore everything that JBoss Logging logs will now actually go via slf4j. Let's say you're using Logba...
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Separation of business logic and data access in django

... It seems like you are asking about the difference between the data model and the domain model – the latter is where you can find the business logic and entities as perceived by your end user, the former is where you actually store your data. Furthermore, I've in...
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When to use static vs instantiated classes

...imic the JavaScript prototype object in PHP 5.3) static members is when I know that the respective field will have the same value cross-instance. At that point you can use a static property and maybe a pair of static getter/setter methods. Anyway, don't forget to add possibility for overriding the s...
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How to perform mouseover function in Selenium WebDriver using Java?

...e element that reveals the others, then during the same chain, move to the now revealed element and click on it. When using Action Chains you have to remember to 'do it like a user would'. Actions action = new Actions(webdriver); WebElement we = webdriver.findElement(By.xpath("html/body/div[13]/ul...
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1

...)ノ >>> On my terminal the example works with the above, but if I get rid of the LANG setting then it won't work $ unset LANG $ python Python 2.7.3 (default, Apr 20 2012, 22:39:59) [GCC 4.6.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>&gt...
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undefined reference to `__android_log_print'

... If using the new Gradle NDK integration in Android Studio 1.3, you need to add ldLibs = ["android", "log"] to your android.ndk options – Stephen Kaiser Sep 24 '15 at 4:20 ...
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ADB Shell Input Events

What is the basic difference between adb shell input keyevent and adb shell sendevent ? Which one should I use for inputting a character? Are the keycodes the same that we pass to both the commands? ...
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How to open a new window on form submit

... if you add the target=_blank, you don'y need the onClick event. – WhyNotHugo May 22 '09 at 7:48 5 ...