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Difference between __str__ and __repr__?

... right out and say it — I do not believe in debuggers. I don’t really know how to use any debugger, and have never used one seriously. Furthermore, I believe that the big fault in debuggers is their basic nature — most failures I debug happened a long long time ago, in a galaxy far far away. T...
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Non-Singleton Services in AngularJS

...exible services could also easily manage state. I don't have time right now, but if it will be helpful I can put together a simple Plunker later to demonstrate. share | improve this answer ...
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How to duplicate sys.stdout to a log file?

...'s either no solution, or I'm doing something so non-standard that nobody knows - I'll revise my question to also ask: What is the best way to accomplish logging when a python app is making a lot of system calls? ...
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Getting the location from an IP address [duplicate]

... I have been using hostip.info for a year now and I'm NOT impressed. It usually return unknown 9/10 checks – aron Jun 30 '10 at 14:32 ...
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DbEntityValidationException - How can I easily tell what caused the error?

...riden SaveChanges without any refactor work. Your exception message will now look like this: System.Data.Entity.Validation.DbEntityValidationException: Validation failed for one or more entities. See 'EntityValidationErrors' property for more details. The validation errors are: The field P...
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How do you include additional files using VS2010 web deployment packages?

...dsOn> </PropertyGroup> This will add our target to the process, now we need to define the target itself. Let’s assume that you have a folder named Extra Files that sits 1 level above your web project. You want to include all of those files. Here is the CustomCollectFiles target and we d...
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How to implement has_many :through relationships with Mongoid and mongodb?

...4684b7e9"), "contact_ids" : [ ObjectId("4d3ed089fb60ab534684b7f2") ] } Now for a self-referencing Association in MongoDB, you have a few options. has_many :related_contacts, :class_name => 'Contact', :inverse_of => :parent_contact belongs_to :parent_contact, :class_name => 'Contact', ...
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Best practices for exception management in Java or C# [closed]

..., and C. In version two of foo, I want to add a bunch of features, and now foo might throw exception D. It is a breaking change for me to add D to the throws clause of that method, because existing caller of that method will almost certainly not handle that exception. Adding a n...
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Is null reference possible?

... return *pointer; } When the compiler sees this function, it does not know whether the pointer is a null pointer or not. So it just generates code that turns any pointer into the corresponding reference. (Btw: This is a noop since pointers and references are the exact same beast in assembler.) N...
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HSL to RGB color conversion

...rry Tan posted a Javascript solution on his blog (which he attributes to a now defunct mjijackson.com, but is archived here and the original author has a gist - thanks to user2441511). The code is re-posted below: HSL to RGB: /** * Converts an HSL color value to RGB. Conversion formula * adapt...