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Task not serializable: java.io.NotSerializableException when calling function outside closure only o

...the outer class, you can't do it. But FileWriter can be constructed from a String or a File, both of which are Serializable. So refactor your code to construct a local FileWriter based on the filename from the outer class. – Trebor Rude Jul 23 '15 at 16:10 ...
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What is a StackOverflowError?

... else recursivePrint(++num); } public static void main(String[] args) { StackOverflowErrorExample.recursivePrint(1); } } In this example, we define a recursive method, called recursivePrint that prints an integer and then, calls itself, with the next successive in...
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Event system in Python

...t to publish is determined by 'signal', which is nothing more than a name (string). Mediator pattern Might be of interest as well: the Mediator pattern. Hooks A 'hook' system is usally used in the context of application plugins. The application contains fixed integration points (hooks), and each pl...
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Warning “Do not Access Superglobal $_POST Array Directly” on Netbeans 7.4 for PHP

...ve put instead: filter_input(INPUT_SERVER, 'SERVER_NAME', FILTER_SANITIZE_STRING) You have the filter_input and filters doc here: http://www.php.net/manual/en/function.filter-input.php http://www.php.net/manual/en/filter.filters.php ...
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Replace a value if null or undefined in JavaScript

... If anything falsey is a potentially valid input (0, false, empty string), I would do something like this instead: var j = (i === null) ? 10 : i; Which will only replace null, rather than anything that can be evaluated to false. – DBS Sep 26 '16 at 11:...
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Get event listeners attached to node using addEventListener

...ist=listeners[useCapture];useCapture++){ if(typeof(type)=="string"){// filtered by type if(list[type]){ for(var id in list[type]){ result.push({"type":type,"listener":list[type][id],"useCapture":!!useCapture}); ...
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How to redirect output with subprocess in Python?

... the stdout argument to subprocess.run: # Use a list of args instead of a string input_files = ['file1', 'file2', 'file3'] my_cmd = ['cat'] + input_files with open('myfile', "w") as outfile: subprocess.run(my_cmd, stdout=outfile) As others have pointed out, the use of an external command like...
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what is difference between success and .done() method of $.ajax

...g NaN values and serializing them as javascript NaN (i.e. as a symbol, not string 'NaN') which is actually not valid JSON -- so the parsing of the response as JSON fails and .fail() is executed, but the response status is 200. But it's still true that success ONLY gets called with an OK status code;...
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Copy file remotely with PowerShell

...CategoryInfo : PermissionDenied: (\\192.168.1.100\Shared\test.txt:String) [Copy-Item], UnauthorizedAccessException> + FullyQualifiedErrorId : ItemExistsUnauthorizedAccessError,Microsoft.PowerShell.Commands.CopyItemCommand So this did it for me: netsh advfirewall firewall set rule...
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How to inherit from a class in javascript?

...ill. For instance, this is how people typically add "trim()" method to all string objects (it is not built-in) See an example here: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… – naivists May 7 '15 at 6:02 ...