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Why does InetAddress.isReachable return false, when I can ping the IP address?

...y of the internet in Java? And even a reported bug on this same matter : http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4921816 Part 1 : A reproducible example of the problem Note that in this case, it fails. //also, this fails for an invalid address, like "www.sjdosgoogle.com1234s...
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What are the uses of “using” in C#?

... Microsoft documentation states that using has a double function (https://msdn.microsoft.com/en-us/library/zhdeatwt.aspx), both as a directive and in statements. As a statement, as it was pointed out here in other answers, the keyword is basically syntactic sugar to determine a scope to dis...
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Omit rows containing specific column of NA

I want to know how to omit NA values in a data frame, but only in some columns I am interested in. 8 Answers ...
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CSRF Token necessary when using Stateless(= Sessionless) Authentication?

...found some information about CSRF + using no cookies for authentication: https://auth0.com/blog/2014/01/07/angularjs-authentication-with-cookies-vs-token/ "since you are not relying on cookies, you don't need to protect against cross site requests" http://angular-tips.com/blog/2014/05/json-web-tok...
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Passing data between controllers in Angular JS?

... the description, seems as though you should be using a service. Check out http://egghead.io/lessons/angularjs-sharing-data-between-controllers and AngularJS Service Passing Data Between Controllers to see some examples. You could define your product service (as a factory) as such: app.factory('pr...
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What is routes.IgnoreRoute(“{resource}.axd/{*pathInfo}”)

...ptResource.axd and WebResource.axd) internally, and they are handled by an HttpHandler. Therefore, you should keep this rule, to prevent ASP.NET MVC from trying to handle the request instead of letting the dedicated HttpHandler do it. ...
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Python function as a function argument?

Can a Python function be an argument of another function? 10 Answers 10 ...
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How to initialise a string from NSData in Swift

... NSUTF8StringEncoding) print("My string value:" + myStringFromData!) http://objectivec2swift.blogspot.in/2016/03/coverting-nsdata-to-nsstring-or-convert.html share | improve this answer ...
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Regex match everything after question mark?

... Check out this site: http://rubular.com/ Basically the site allows you to enter some example text (what you would be looking for on your site) and then as you build the regular expression it will highlight what is being matched in real time. ...
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Simple calculations for working with lat/lon and km distance?

...or GPS). But the error is probably negligible for your purposes. Source: http://en.wikipedia.org/wiki/Latitude Caution: Be aware that latlong coordinates are expressed in degrees, while the cos function in most (all?) languages typically accepts radians, therefore a degree to radians conversion i...