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Getting a better understanding of callback functions in JavaScript

... Why do you cast callback to string and then check its type? Will this enhance performance? This is like checking the type, checking if the converted boolean returns true and then checking its type again and testing it against the string...
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Get an object's class name at runtime

... @Subash a terser way to avoid casting to any is console.log(instance.constructor['name']); – Nick Strupat Sep 2 '16 at 7:47 1 ...
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Asp Net Web API 2.1 get client IP address

... It's better to cast it to HttpContextBase, this way you can mock and test it more easily public string GetUserIp(HttpRequestMessage request) { if (request.Properties.ContainsKey("MS_HttpContext")) { var ctx = request....
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How do you properly determine the current script directory in Python?

...at if you would be able to define a "known location" that is multiplatform and that also comes with the module. I'm ready to bet that the only safe location is the script location. Note, this doesn't meat that the script should write to this location, but for reading data it is safe. ...
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How to dynamically create generic C# object using reflection? [duplicate]

...from Item task.Process(new Item()); In any case, you won't be statically cast to a type you don't know beforehand ("makeme" in this case). ITask allows you to get to your target type. If this is not what you want, you'll probably need to be a bit more specific in what you are trying to achieve wi...
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YouTube iframe API: how do I control an iframe player that's already in the HTML?

...0 dispatch @ jquery-1.12.4.js:5226 elemData.handle @ jquery-1.12.4.js:4878 cast_sender.js:67 Uncaught DOMException: Failed to construct 'PresentationRequest': Presentation of an insecure document [cast:233637DE?capabilities=video_out%2Caudio_out&clientId=153262711713390989&autoJoinPolicy=tab...
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Java generics type erasure: when and what happens?

...cs are used, they're converted into compile-time checks and execution-time casts. So this code: List<String> list = new ArrayList<String>(); list.add("Hi"); String x = list.get(0); is compiled into List list = new ArrayList(); list.add("Hi"); String x = (String) list.get(0); At exe...
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python: Change the scripts working directory to the script's own directory

... @EliCourtwright If __file__ is not already an absolute path, and the user has changed the working directory, then os.path.abspath will fail anyway. – Arthur Tacca Jan 17 '17 at 16:16 ...
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How to start a background process in Python?

...rocess module provides more powerful facilities for spawning new processes and retrieving their results; using that module is preferable to using these functions.) If you want your process to start in the background you can either use system() and call it in the same way your shell script did, o...
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How can I search sub-folders using glob.glob module?

I want to open a series of subfolders in a folder and find some text files and print some lines of the text files. I am using this: ...