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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...
What is the most efficient way to store a list in the Django models?
...the root of all evil."
With that firmly in mind, let's do this! Once your apps hit a certain point, denormalizing data is very common. Done correctly, it can save numerous expensive database lookups at the cost of a little more housekeeping.
To return a list of friend names we'll need to create a ...
How are ssl certificates verified?
... @voipp: Great question! Historically there have been a few approaches, such as "send an email from webmaster@<domain-being-verified> or "Place this file on your domain to prove you own it." However, there have indeed been problems with people getting CAs to issue certificates ...
What is a sensible way to layout a Go project [closed]
...auth_test.go # test source
Update July 2014: see "Structuring Applications in Go" from Ben Johnson
That article include tips like:
Separate your binary from your application
combining the main.go file and my application logic in the same package has two consequences:
It ma...
Is there a better Windows Console Window? [closed]
...imarily because the console window is wretched to use compared to terminal applications on linux and OS X such as "rxvt", "xterm", or "Terminal". Major complaints:
...
Submit form on pressing Enter with AngularJS
...ent) {
if(event.which === 13) {
scope.$apply(function(){
scope.$eval(attrs.ngEnter, {'event': event});
});
event.preventDefault();
}
});
};
});
HTML:
<d...
List of Delphi language features and version in which they were introduced/deprecated
...e same ABI for all calls.
Delphi 10.2 Tokyo
Support for Linux server apps (Intel 64-bit using LLVM and ARC).
Assigning a dynamic arrays to a pointer using the @ operator is only allowed when hard-casting the array.
More flexible namespace resolution of unit names
Delphi 10.1 Berlin
Nati...
When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...
You should read developer.apple.com/library/ios/#featuredarticles/… to understand the view/view controller life-cycle
– Paul Solt
Dec 20 '10 at 15:37
...
What is the proper REST response code for a valid request but an empty data?
...browser in response to a GET.
The other response codes that are even less appropriate than 204 and 404:
200 should be returned with the body of whatever you successfully fetched. Not appropriate when the entity you're fetching doesn't exist.
202 is used when the server has begun work on an objec...
How do I list all files of a directory?
...:
import glob
txtfiles = []
for file in glob.glob("*.txt"):
txtfiles.append(file)
glob with list comprehension
import glob
mylist = [f for f in glob.glob("*.txt")]
glob with a function
The function returns a list of the given extension (.txt, .docx ecc.) in the argument
import ...