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Get Root Directory Path of a PHP project

... is what you are looking for, isn't it? In that case you could explode the string by slashes and return the first one: $pathInPieces = explode('/', $_SERVER['DOCUMENT_ROOT']); echo $pathInPieces[0]; This will output the server's root directory. Update: When you use the constant DIRECTORY_SEPARAT...
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Is Java “pass-by-reference” or “pass-by-value”?

... easily confuse many beginners. It goes like this: public static void main(String[] args) { Dog aDog = new Dog("Max"); Dog oldDog = aDog; // we pass the object to foo foo(aDog); // aDog variable is still pointing to the "Max" dog when foo(...) returns aDog.getName().equals("...
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How do I get the path and name of the file that is currently executing?

... this is weird: when running from command line "__file__" in quotes (as string) gives the dir from which cmd is run, but __file__ (without quotes gives the path to the source file ... why is that – muon May 9 '18 at 13:53 ...
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Get real path from URI, Android KitKat new storage access framework [duplicate]

...on the SD card situation). To get document id: // Will return "image:x*" String wholeID = DocumentsContract.getDocumentId(uriThatYouCurrentlyHave); // Split at colon, use second item in the array String id = wholeID.split(":")[1]; String[] column = { MediaStore.Images.Media.DATA }; // wher...
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Convert string to symbol-able in ruby

... Rails got ActiveSupport::CoreExtensions::String::Inflections module that provides such methods. They're all worth looking at. For your example: 'Book Author Title'.parameterize.underscore.to_sym # :book_author_title ...
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What's the use of ob_start() in php?

...PHP with a lot of HTML but not render it. It saves me from storing it as a string which disables IDE color-coding. <?php ob_start(); ?> <div> <span>text</span> <a href="#">link</a> </div> <?php $content = ob_get_clean(); ?> Instead of: <...
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How to download image from url

...rl), @"c:\temp\image35.png"); } These methods are almost same as DownloadString(..) and DownloadStringAsync(...). They store the file in Directory rather than in C# string and no need of Format extension in URi If You don't know the Format(.png, .jpeg etc) of Image public void SaveImage(string f...
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What is the use of static constructors?

...hem. Example: Suppose we had this class: class ScopeMonitor { static string urlFragment = "foo/bar"; static string firstPart= "http://www.example.com/"; static string fullUrl= firstPart + urlFragment; } When you access fullUr, it will be "http://www.example.com/foo/bar". Months late...
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Is it possible for a computer to “learn” a regular expression by user-provided examples?

... Yes, it's certainly "possible"; Here's the pseudo-code: string MakeRegexFromExamples(<listOfPosExamples>, <listOfNegExamples>) { if HasIntersection(<listOfPosExamples>, <listOfNegExamples>) return <IntersectionError> string regex = ""; ...
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How to flush output of print function?

...iven as keyword arguments. All non-keyword arguments are converted to strings like str() does and written to the stream, separated by sep and followed by end. Both sep and end must be strings; they can also be None, which means to use the default values. If no objects are given, print() will ju...