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Chaining multiple filter() in Django, is this a bug?

... The way I understand it is that they are subtly different by design (and I am certainly open for correction): filter(A, B) will first filter according to A and then subfilter according to B, while filter(A).filter(B) will return a row that ma...
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Wrapping null-returning method in Java with Option in Scala?

...ause Try is not about nullability checking but just a way to functionally handle exceptions. Using Try to catch an exception and converting that to an Option for convenience will only show None in case an exception happens. scala> Try(1/0).toOption res11: Option[Int] = None You want to preser...
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Does List guarantee insertion order?

...ly the List could re-order the collection any time after an item was added and that statement would still be valid. I don't want to get nit-picky about it, but if a manager or QA really made me defend this position, I wouldn't feel very confident with just that quote. – tehDorf...
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How can I check which version of Angular I'm using?

...answers below for Angular versions >= 2. AngularJS does not have a command line tool. You can get the version number from the JavaScript file itself. Header of the current angular.js: /** * @license AngularJS v1.0.6 * (c) 2010-2012 Google, Inc. http://angularjs.org * License: MIT */ ...
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How can I remove the decimal part from JavaScript number?

I have the results of a division and I wish to discard the decimal portion of the resultant number. 14 Answers ...
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What is the difference between a dialog being dismissed or canceled in Android?

...ys, what is the difference between a dialog being dismissed or canceled in Android? 4 Answers ...
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How to exit if a command failed?

I am a noob in shell-scripting. I want to print a message and exit my script if a command fails. I've tried: 8 Answers ...
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Re-raise exception with a different type and message, preserving existing information

I'm writing a module and want to have a unified exception hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly,...
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How to load assemblies in PowerShell?

...blies\Microsoft.SqlServer.Smo.dll' There are multiple different versions and you may want to pick a particular version. :-) share | improve this answer | follow ...
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How do I compare two files using Eclipse? Is there any option provided by Eclipse?

...orer / Navigator with control-click. Now right-click on one of the files, and the following context menu will appear. Select Compare With / Each Other. share | improve this answer | ...