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How to design a product table for many kinds of product where each product has many parameters
...be easily queried within SQL; you have to fetch the whole blob back to the application and sort it out there.
Entity-Attribute-Value: One table for Products, and one table that pivots attributes to rows, instead of columns. EAV is not a valid design with respect to the relational paradigm, but man...
How slow are .NET exceptions?
...ceptions where they're not logical. For instance, int.TryParse is entirely appropriate for converting data from a user. It's appropriate when reading a machine-generated file, where failure means "The file isn't in the format it's meant to be, I really don't want to try to handle this as I don't kno...
Create, read, and erase cookies with jQuery [duplicate]
...'t specifically alluding to above, but when I include it in my Gemfile and application.js (immediately after //= require jQuery, as the installation instructions say to do), I get an error whenever I load the app about missing files. If I remember correctly, the error was something like "Sprockets::...
What is Virtual DOM?
...components before any changes are made to the page.
It’s a step that happens between the render function being called and the displaying of elements on the screen.
A component’s render method returns some markup, but it’s not the final HTML yet. It’s the in-memory representation of what ...
What is the difference between angular-route and angular-ui-router?
I'm planning to use AngularJS in my big applications. So I'm in the process to find out the right modules to use.
15 Answ...
What's the best way to communicate between view controllers?
...nswers which focus on the importance of putting data in model objects when appropriate (per the MVC design pattern). Usually you want to avoid putting state information inside a controller, unless it's strictly "presentation" data.
Second, see page 10 of the Stanford presentation for an example of ...
Disable activity slide-in animation when launching new activity?
...oftkeys. OP asks how to 'disable' the animation, not 'selectively tell the app to not play it'
– 1owk3y
Nov 28 '14 at 5:05
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Update just one gem with bundler
I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included as followed:
8 A...
When to catch java.lang.Error?
In what situations should one catch java.lang.Error on an application?
16 Answers
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两大桌面系统之战：Yosemite vs Windows 10 - 操作系统(内核) - 清泛网 - ...
...一次就可以在所有设备上使用。
相比之下，iOS App Store 和 Mac App Store 则是两个完全没有关联的平台。从用户的角度来说，在 OS X 上运行 iOS 应用也许没有什么意义。在 iOS 上运行 OS X 应用，或者是在 Mac 上玩 iOS 游戏，有...