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Manually raising (throwing) an exception in Python

...tically fits your issue. Be specific in your message, e.g.: raise ValueError('A very specific bad thing happened.') Don't raise generic exceptions Avoid raising a generic Exception. To catch it, you'll have to catch all other more specific exceptions that subclass it. Problem 1: Hiding bugs ...
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Use ASP.NET MVC validation with jquery ajax?

...ata.ModelState; if (!modelState.IsValid) { var errorModel = from x in modelState.Keys where modelState[x].Errors.Count > 0 select new { key = x, ...
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Error handling in getJSON calls

How can you handle errors in a getJSON call? Im trying to reference a cross-domain script service using jsonp, how do you register an error method? ...
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Custom error pages on asp.net MVC3

...eveloping a MVC3 base website and I am looking for a solution for handling errors and Render custom Views for each kind of error. So imagine that I have a "Error" Controller where his main action is "Index" (generic error page) and this controller will have a couple more actions for the errors that ...
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How to do error logging in CodeIgniter (PHP)

I want error logging in PHP CodeIgniter. How do I enable error logging? 5 Answers 5 ...
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Is null reference possible?

...erator actually working (which I forgot to.. my bad) - March 10 2015 - // Error.h class Error { public: static Error& NOT_FOUND; static Error& UNKNOWN; static Error& NONE; // singleton object that represents null public: static vector<shared_ptr<Error>> _instances; ...
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What are the best practices for JavaScript error handling?

I'm looking to start making my JavaScript a bit more error proof, and I'm finding plenty of documentation on using try , catch , finally , and throw , but I'm not finding a ton of advice from experts on when and where to throw errors. ...
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Rails 3: “field-with-errors” wrapper changes the page appearance. How to avoid this?

... You should override ActionView::Base.field_error_proc. It's currently defined as this within ActionView::Base: @@field_error_proc = Proc.new{ |html_tag, instance| "<div class=\"field_with_errors\">#{html_tag}</div>".html_safe } You can override it...
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Where to define custom error types in Ruby and/or Rails?

Is there a best practice for defining custom error types in a Ruby library (gem) or Ruby on Rails application? Specifically: ...
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How to handle $resource service errors in AngularJS

...esource module. It's different from $http so I don't know how to handle my errors. 3 Answers ...