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What it the significance of the Javascript constructor property?

...y to find attr among x's attributes. If it cant find it, it will look in x.__proto__. If it's not there either, it will look in x.__proto__.__proto__ and so on as long as __proto__ is defined. So what is __proto__and what has it got to do with prototype? Shortly put, prototype is for "types" while ...
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Portable way to get file size (in bytes) in shell?

... One would guess the portable ls -ln FILE | { read _ _ _ _ size _ && echo "$size"; } needs not fork for the second step of the pipeline, as it uses just built-ins, but Bash 4.2.37 on Linux forks twice (still only one execve, though). – Palec ...
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PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?

I did a lot of searching and also read the PHP $_SERVER docs . Do I have this right regarding which to use for my PHP scripts for simple link definitions used throughout my site? ...
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Rails I18n validation deprecation warning

... the following line inside the Rails::Application body config.i18n.enforce_available_locales = true The possible values are: false: if you want to skip the locale validation don't care about locales true: if you want the application to raise an error if an invalid locale is passed (or) wan...
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pydot and graphviz error: Couldn't import dot_parser, loading of dot files will not be possible

...workX (e.g. this NetworkX example failed). I kept getting: global name 'dot_parser' is not defined. Your solution solved this problem. – qtips Aug 6 '13 at 0:41 ...
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Python exit commands - why so many and when should each be used?

...ution. The choices I've found are: quit() , exit() , sys.exit() , os._exit() 4 Answers ...
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How to “properly” create a custom object in JavaScript?

... This is the simplest approach I know of: function subclassOf(base) { _subclassOf.prototype= base.prototype; return new _subclassOf(); } function _subclassOf() {}; This transfers the base class's members in its prototype to a new constructor function which does nothing, then uses that con...
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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update

as the title says, I want to perform a find (one) for a document, by _id, and if doesn't exist, have it created, then whether it was found or was created, have it returned in the callback. ...
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iOS 7 status bar back to iOS 6 default style in iPhone app?

...Options, call if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_6_1) { [application setStatusBarStyle:UIStatusBarStyleLightContent]; self.window.clipsToBounds =YES; self.window.frame = CGRectMake(0,20,self.window.frame.size.width,self.window.frame.size.height-20); /...
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Application not picking up .css file (flask/python)

...ride it. Your directory structure for css should be like: /app - app_runner.py /services - app.py /templates - mainpage.html /static /styles - mainpage.css Notice that your /styles directory should be under /static Then, do this <link re...