Core Data Multithreading [closed] - ios

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is possible have two thread on core data where one update application's database and the other read from database? i don't find a solution. is there some tutorials?
Thanks

Yes, it is possible and actually it is the best practice.
http://www.cocoanetics.com/2012/07/multi-context-coredata/

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Where should I store error definitions? [closed]

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I am developing my own identity system for my ASP.Net 5 application, and I am currently looking for an efficient way to store my predefined error codes and their corresponding descriptions. Does anyone have any suggestions to my issue?
Use resource files: https://msdn.microsoft.com/en-us/library/windows/desktop/aa380599%28v=vs.85%29.aspx
They allow you to store the name of the error code, the error code and a description. Then use Properties.Resources to access them.

How to use EventSourceCreationData function? [closed]

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Does anyone know what uses I need to add to access EventSourceCreationData?
The EventSourceCreationData is a Net class, if you want write to the Windows log using Delphi you must try the WinAPI Event Logging Functions

Send Binary to another application using x-callback-url [closed]

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I need to send a binary file to another application via. x-callback-url. I am able to read the file as NSData. But i am stuck there! Any suggestions?
Thanks in advance!
Try using -[NSString base64EncodedDataWithOptions:] and -[NSString base64EncodedStringWithOptions:].

Present variable value in database [closed]

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I need to create a database file and present in it a variable value. I don't understand a lot in database so anyone have a sample code for me?
That's quite a vague question but you can go with these links:
Ray Wenderlich Tutorial
Apple documentation
Core Data snippets
Apple threaded Core Data sample app
Hope that helps.

Neo4j : Introduction with basics? [closed]

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Hello everyone I am new to Neo4j, i am not able to get things like, How to query exactly and check its result. Also does any other software necessary to make it work? if so then which.
The manual should be able to answer all the questions you have: http://docs.neo4j.org/chunked/stable/
Also, do check out http://www.neo4j.org/learn

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