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How update the _id of one MongoDB Document?

I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get: ...
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What is Dependency Injection and Inversion of Control in Spring Framework?

...Injection. In Spring, objects define their associations (dependencies) and do not worry about how they will get those dependencies. It is the responsibility of Spring to provide the required dependencies for creating objects. For example: Suppose we have an object Employee and it has a dependency ...
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SQLAlchemy ORDER BY DESCENDING?

...also specify those things as column attributes. For instance, I might have done: .order_by(model.Entry.amount.desc()) This is handy since it avoids an import, and you can use it on other places such as in a relation definition, etc. For more information, you can refer this ...
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How to repeat last command in python interpreter shell?

How do I repeat the last command? The usual keys: Up, Ctrl+Up, Alt-p don't work. They produce nonsensical characters. 26 An...
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Difference between break and continue in PHP?

... it's 7 years after this answer but it worth to say this. as in php documents from v4 break and continue are same in switch. both exit from switch. to exit from outer loop if there is for or so use continue 2. – Amin.Qarabaqi Dec 11 '17 at 7:24 ...
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Mysql command not found in OS X 10.7

...sr/local/mysql/bin/private/var/mysql/private/var/mysql/bin, which probably doesn't exist. Instead you want ${PATH}:/usr/local/mysql/bin. So do export PATH=${PATH}:/usr/local/mysql/bin. If you want this to be run every time you open terminal put it in the file .bash_profile, which is run when T...
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“fatal: Not a git repository (or any of the parent directories)” from git status

.../cfdem/liggghts Cloning into 'liggghts'... remote: Counting objects: 3005, done. remote: Compressing objects: 100% (2141/2141), done. remote: Total 3005 (delta 1052), reused 2714 (delta 827) Receiving objects: 100% (3005/3005), 23.80 MiB | 2.22 MiB/s, done. Resolving deltas: 100% (1052/1052), done. ...
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Add a UIView above all, even the navigation bar

... You can do that by adding your view directly to the keyWindow: UIView *myView = /* <- Your custom view */; UIWindow *currentWindow = [UIApplication sharedApplication].keyWindow; [currentWindow addSubview:myView]; UPDATE -- For ...
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In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?

...irty workaround to prevent creating connections for each request like AJAX does -- but long polling was created when WebSockets didn't exist. Now due to WebSockets, long polling is going away. WebRTC allows for peer-to-peer communication. I recommend learning WebSockets. Comparison: of differe...
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“query function not defined for Select2 undefined error”

... Also has to be inside $(document).ready(function() { $('select.form-select').select2()}) – TED May 8 '14 at 11:09 1 ...