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mongo group query how to keep fields

...t suggestions] I came here looking for an answer but wasn't happy with the selected answer (especially given it's age). I found this answer that is a better solution (adapted): db.test.aggregate({ $group: { _id: '$name', person: { "$first": "$$ROOT" }, count: { $sum: 1 } }, { "$r...
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how to change namespace of entire project?

...form find namespace name -> right click -> Refactor -> Rename and select a new name. Check all boxes and click OK. In the solution explorer rename solution name to a new name. In the solution explorer rename project name to a new name. Close VS and rename folder (in total commander for exam...
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How to export and import a .sql file from command line with options? [duplicate]

...mysql_location -u $u_name -p $db_name < $sql_file else echo "please select a valid command" fi share | improve this answer |
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how can I add the aidl file to Android studio (from the in-app billing example)

...te new directory under src/main called aidl Right click on directory aidl, select new->add package Enter Name of the package com.android.vending.billing Copy IInAppBillingService.aidl from the directory Android/Sdk/extras/google/play_billing to the directory App_name/app/src/main/aidl/com/androi...
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How do I cancel a build that is in progress in Visual Studio?

...n do following Click Build --> Cancel from the Visual Studio Menu or Select Azure App Service Activity window --> Cancel it will cancel the publish activity. share | improve this answer ...
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View a list of recent documents in Vim

... sort files by those most recently modified. Then one simply calls :e. and selects the file one wants. This solution presupposes files are saved in one main directory so specified in .gvimrc. E.g. cd ~/vim share ...
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machine learning libraries in C# [closed]

...iningSet trainingSet) { var attributes = trainingSet._attributes.Select(x => new Attribute(x)).ToArray(); var featureVector = new FastVector(trainingSet.AttributesCount); foreach (var attribute in attributes) { featureVector.addElement(attribute); } ...
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No provider for “framework:jasmine”! (Resolving: framework:jasmine)

... My problem was the selected "Karma package" in the IntelliJ run configuration. I did not select the project's karma package in the project's "node_module" folder: shar...
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Failed loading english.pickle with nltk.data.load

...wnload() Then an installation window appears. Go to the 'Models' tab and select 'punkt' from under the 'Identifier' column. Then click Download and it will install the necessary files. Then it should work! share |...
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Installing R on Mac - Warning messages: Setting LC_CTYPE failed, using “C”

... recommend installing from the CRAN repos. cran.r-project.org/mirrors.html select a mirror that fits you and then pick packages you want to install, it should be pretty straightforward! Good luck! – nemesis Feb 11 '14 at 21:27 ...