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Get names of all keys in the collection

...p with $addToSet to get distinct keys across the entire collection. (Use $$ROOT for referencing the top level document.) db.things.aggregate([ {"$project":{"arrayofkeyvalue":{"$objectToArray":"$$ROOT"}}}, {"$unwind":"$arrayofkeyvalue"}, {"$group":{"_id":null,"allkeys":{"$addToSet":"$arrayofkey...
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How to get hosting Activity from a view?

...ll the base context, till the activity is found, or exit the loop when the root context is found. Cause the root context will have a null baseContext, leading to the end of the loop. – Gomino May 5 '16 at 18:19 ...
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What is “(program)” in Chrome debugger’s profiler?

... (program) is Chrome itself, the root of the tree calling all other code...it's there because the jump from native code to JavaScript, resource loading, etc. has to start somewhere :) You can see examples of the treeview in the Chrome developer tool docs. ...
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Can an int be null in Java?

...ign null to int in Java by casting it to Integer, for example if the check(root) method can return null then you can safely cast it to int by doing something like this: int data = (Integer)check(node); – sactiw Oct 11 '12 at 14:06 ...
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How to handle static content in Spring MVC?

...erve static resources while still using the DispatchServlet on your site's root. In order to use this, use a directory structure that looks like the following: src/ springmvc/ web/ MyController.java WebContent/ resources/ img/ image.jpg WEB-INF/ jsp/ index.jsp web.xm...
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SSL certificate rejected trying to access GitHub over HTTPS behind firewall

...e in cygwin (thanks dirkjot) There are two solutions: Actually install root certificates. Curl guys extracted for you certificates from Mozilla. cacert.pem file is what you are looking for. This file contains > 250 CA certs (don't know how to trust this number of ppl). You need to download ...
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What are CN, OU, DC in an LDAP search?

...e format. You read it from right to left, the right-most component is the root of the tree, and the left most component is the node (or leaf) you want to reach. Each = pair is a search criteria. With your example query ("CN=Dev-India,OU=Distribution Groups,DC=gp,DC=gl,DC=google,DC=com"); In e...
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process.env.NODE_ENV is undefined

...d will also make sure it works across different platforms. In the project root, run: npm install cross-env Then in your package.json, under scripts, add: "start": "cross-env NODE_ENV=dev node your-app-name.js" Then in your terminal, at the project root, start your app by running: npm start ...
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How would I get a cron job to run every 30 minutes?

... Works great! In CentOS crontab, I had to do something like 0,30 * * * * root your_command where root would be the user I'm using. – prograhammer Nov 13 '14 at 0:38 ...
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read string from .resx file in C#

... From the MSDN page I referenced:baseName The root name of the resource file without its extension but including any fully qualified namespace name. For example, the root name for the resource file named MyApplication.MyResource.en-US.resources is MyApplication.MyResourc...