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Does const mean thread-safe in C++11?

...l to set_size on a given rect, then area could end up computing its result based on an old width and a new height (or even on garbled values). But that is alright, rect isn't const so its not even expected to be thread-safe after all. An object declared const rect, on the other hand, would be thread...
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Spring MVC: How to perform validation?

...o is the reference implementation (this library has nothing to do with databases and relational mapping, it just does validation :-). Then in your controller you would have something like : @RequestMapping(value="/user", method=RequestMethod.POST) public createUser(Model model, @Valid @ModelAttrib...
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How to remove/ignore :hover css style on touch devices

...state that The pointer CSS @media feature can be used to apply styles based on whether the user's primary input mechanism is a pointing device, and if so, how accurate it is . What I discovered is that pointer: coarse is something that is unknown to all desktop browsers in the attached t...
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How to prevent Browser cache for php site

...ragma: no-cache'); AND Option 2 IS ALWAYS BETTER in order to avoid proxy based caching issue. share | improve this answer | follow | ...
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How to filter SQL results in a has-many-through relation

...s. 6.000 students, 24.000 club memberships (data copied from a similar database with real life data.) Slight diversion from the naming schema in the question: student.id is student.stud_id and club.id is club.club_id here. I named the queries after their author in this thread, with an index where th...
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Solving “Who owns the Zebra” programmatically?

... Here's a solution in Python based on constraint-programming: from constraint import AllDifferentConstraint, InSetConstraint, Problem # variables colors = "blue red green white yellow".split() nationalities = "Norwegian German Dane Swede Engli...
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Xcode Project vs. Xcode Workspace - Differences

...rride it Concrete target settings: PSE iPhone overrides the project’s Base SDK setting In Xcode, you always open projects (or workspaces, but not targets), and all the targets it contains can be built/run, but there’s no way/definition of building a project, so every project needs at least o...
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How does the “this” keyword work?

...led or by bind, not by where it is defined. Calling any function without a base reference ("context") will default this to the global object or remain undefined in strict mode. – RobG Jun 20 '14 at 1:50 ...
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What is a Portable Class Library?

... you to create C# and Visual Basic libraries that run on a variety of .NET-based platforms without recompilation. MSDN now has a nice article/documentation on it. You can check it out and see what is supported in Portable Class Library . The following assemblies are available within a Po...
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JavaScript: Class.method vs. Class.prototype.method

...oduced in ES6 is primarily a syntactical sugar over the existing prototype-based inheritance model. share | improve this answer | follow | ...