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How to remove a field completely from a MongoDB document?
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db.example.update({}, {$unset: {words:1}}, false, true);
Refer this:
http://www.mongodb.org/display/DOCS/Updating#Updating-%24unset
UPDATE:
The above link no longer covers '$unset'ing. Be sure to add {multi: true} if you want to remove this field from all of the documents in the collection;...
Find number of months between two Dates in Ruby on Rails
....year * 12 + date2.month) - (date1.year * 12 + date1.month)
more info at http://www.ruby-forum.com/topic/72120
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Posting a File and Associated Data to a RESTful WebService preferably as JSON
... of MultiPart/Form-Data is derived from one of those
applications...
From http://www.faqs.org/rfcs/rfc2388.html:
"multipart/form-data" contains a series of parts. Each part is
expected to contain a content-disposition header [RFC 2183] where the
disposition type is "form-data", and where the dispo...
What are the applications of binary trees?
...multimap, set, and multiset.
Example code for an AVL tree can be found at http://ideone.com/MheW8
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Why covariance and contravariance do not support value type
...eUploader: {
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URL Encoding using C#
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UrlEncoding will do what you are suggesting here. With C#, you simply use HttpUtility, as mentioned.
You can also Regex the illegal characters and then replace, but this gets far more complex, as you will have to have some form of state machine (switch ... case, for example) to replace with the c...
MySQL Creating tables with Foreign Keys giving errno: 150
I am trying to create a table in MySQL with two foreign keys, which reference the primary keys in 2 other tables, but I am getting an errno: 150 error and it will not create the table.
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Why can't an anonymous method be assigned to var?
I have the following code:
7 Answers
7
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CSRF Token necessary when using Stateless(= Sessionless) Authentication?
...found some information about CSRF + using no cookies for authentication:
https://auth0.com/blog/2014/01/07/angularjs-authentication-with-cookies-vs-token/
"since you are not relying on cookies, you don't need to protect against cross site requests"
http://angular-tips.com/blog/2014/05/json-web-tok...
Select N random elements from a List in C#
I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a List<string> .
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