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E11000 duplicate key error index in mongodb mongoose

... I am explaining to a 5-year-old , so everyone can understand . I have an app.I want people to register with their email,password and phone number . In my MongoDB database , I want to identify people uniquely based on both their phone numbers and email - so this means that both the phone number an...
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is_null($x) vs $x === null in PHP [duplicate]

...s. It doesn't matter. It will never matter. Nobody trying to improve their application's performance has ever declared "curses, if only I could shave half a microsecond off this null check!", and nobody ever will. – Mark Amery Jun 20 '15 at 23:17 ...
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Serializing object that contains cyclic object value

... code produces cycling loops, beware of using, very potential crashes your app. needs correct semicolons and is not useable on event objects! – Ol Sen Apr 22 '13 at 16:07 3 ...
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How do I make calls to a REST api using C#?

...equestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue("application/json")); // List data response. HttpResponseMessage response = client.GetAsync(urlParameters).Result; // Blocking call! Program will wait here until a response is received or a timeout oc...
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Installing Java on OS X 10.9 (Mavericks)

... The new Mavericks (10.9) showed me the "Requesting install", but nothing happened. The solution was to manually download and install the official Java package for OS X, which is in Java for OS X 2013-005. Update: As mentioned in the comments below, there is a newer version of this same package:...
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upstream sent too big header while reading response header from upstream

... you are the man! thanks! first option worked in my ruby on rails app – Nezir May 27 '19 at 16:38 Probably a ...
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How can I change the color of AlertDialog title and the color of the line under it

... I use this piece of code in many places in my app and everywhere it works fine. I only know about troubles with DialogFragment where title color hasn't id android:id/alertTitle but I didn't found the correct one. – mmrmartin Sep 11 ...
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Postgres: clear entire database before re-creating / re-populating from bash script

...s. As the documentation clearly states here postgresql.org/docs/9.4/static/app-pgdump.html, you need to use --clean on pg_restore for archived backups. – Kikin-Sama Feb 1 '15 at 22:33 ...
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Is there anything like inotify on Windows?

With the Linux OS, there is the ionotify subsystem which notifies an application of changes to the filesystem. 8 Answers ...
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Why should I use document based database instead of relational database?

...uchDB instead of using relational database. Are there any typical kinds of applications or domains where the document based database is more suitable than the relational database? ...