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What are fixtures in programming?

...nment in which tests are run so that results are repeatable. Some people call this the test context. Examples of fixtures: Loading a database with a specific, known set of data Erasing a hard disk and installing a known clean operating system installation Copying a specific known ...
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bash HISTSIZE vs. HISTFILESIZE?

...ssion. Your HISTFILE (file that stores your bash command history), is truncated to contain HISTFILESIZE=10 lines. You write 50 lines. At the end of your 50 commands, only commands 41 to 50 are in your history list, whose size is determined by HISTSIZE=10. You end your session. Assuming histappend...
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Override devise registrations controller

...knownAttributeError is triggered in this instance. Otherwise, I think you can just create your own controller, by generating something like this: # app/controllers/registrations_controller.rb class RegistrationsController < Devise::RegistrationsController def new super end def create...
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How to check if a table exists in a given schema

...tion schema (information_schema.tables) is incorrect, strictly speaking, because (per documentation): Only those tables and views are shown that the current user has access to (by way of being the owner or having some privilege). The query provided by @kong can return FALSE, but the table ca...
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What is the difference between mocking and spying when using Mockito?

What would be a use case for a use of a Mockito spy? 5 Answers 5 ...
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combinations between two lists?

...having trouble wrapping my head around a algorithm I’m try to make. Basically, I have two lists and want to get all the combinations of the two lists. ...
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What is the ultimate postal code and zip regex?

...mon pattern. In some countries they are made up by numbers, in others they can be combinations of numbers an letters, some can contain spaces, others dots, the number of characters can vary from two to at least six... What you could do (theoretically) is create a seperate regex for every country in...
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Using the field of an object as a generic Dictionary key

...ht "return FooID;" as the GetHashCode() if you want that as the match. You can also implement IEquatable<Foo>, but that is optional: class Foo : IEquatable<Foo> { public string Name { get; set;} public int FooID {get; set;} public override int GetHashCode() { return...
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Why are Perl 5's function prototypes bad?

...end to expect prototypes to provide a mechanism for checking that function calls are correct: that is, that they have the right number and type of arguments. Perl's prototypes are not well-suited for this task. It's the misuse that's bad. Perl's prototypes have a singular and very different purpose:...
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Return type of '?:' (ternary conditional operator)

... they have a type and - as it's known in the latest C++ standard - a value category. A conditional expression can be an lvalue or an rvalue. This is its value category. (This is somewhat of a simplification, in C++11 we have lvalues, xvalues and prvalues.) In very broad and simple terms, an lvalue r...