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How to design a product table for many kinds of product where each product has many parameters

I do not have much experience in table design. My goal is to create one or more product tables that meet the requirements below: ...
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How is std::function implemented?

...  |  show 7 more comments 23 ...
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Why is x86 ugly? Why is it considered inferior when compared to others? [closed]

...itectural registers, which can force programs to round-trip through memory more frequently than would otherwise be necessary. The extra instructions needed to do this take execution resources that could be spent on useful work, although efficient store-forwarding keeps the latency low. Modern impl...
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?

...ash abstraction that represents the current hash algorithm in use. See more at "Why doesn't Git use more modern SHA?": it is SHA-2, since Git 2.19 (Q3 2018) With Git 2.25 (Q1 2020), tests are preparing for a SHA-2 transition, and is involving the empty tree. See commit fa26d5e, commit cf02be...
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Making custom right-click context menus for my web-app

... this has been lately, I decided to update also the styles to make it look more like 2014 and less like windows 95. I fixed the bugs @Quantico and @Trengot spotted so now it's a more solid answer. EDIT 2: I set it up with StackSnippets as they're a really cool new feature. I leave the good jsfiddle...
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Why does C++ not have reflection?

...ying C++. Why should my code carry around metadata if I may never need it? Moreover, the addition of metadata may inhibit the compiler from optimizing. Why should I pay that cost in my code if I may never need that metadata? Which leads us to another big point: C++ makes very few guarantees about th...
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How to make a great R reproducible example

...rary(help = "datasets"). There is a short description to every dataset and more information can be obtained for example with ?mtcars where 'mtcars' is one of the datasets in the list. Other packages might contain additional datasets. Making a vector is easy. Sometimes it is necessary to add some r...
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Two-way encryption: I need to store passwords that can be retrieved

... Personally, I would use mcrypt like others posted. But there is much more to note... How do I encrypt and decrypt a password in PHP? See below for a strong class that takes care of everything for you: What is the safest algorithm to encrypt the passwords with? safest? any of them. The sa...
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How efficient can Meteor be while sharing a huge collection among many clients?

...ed, this.changed and this.removed. See the full publish documentation for more details. Most publish functions don't have to muck around with the low-level added, changed and removed API, though. If a publish function returns a Mongo cursor, the Meteor server automatically connects the output of ...
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How to make a SPA SEO crawlable?

...ough there are quite a few general explanations I couldn't find anywhere a more thorough step-by-step tutorial with actual examples. After having finished this I would like to share my solution so that others may also make use of it and possibly improve it further. I am using MVC with Webapi...