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What is Haskell used for in the real world? [closed]

... to be able to easily roll back every change if some object deep in the call hierarchy decided the message is flawed? How about having a history of different states? Many housekeeping tasks made for you: deconstructing data structures (PatternMatching), storing variable bindings (LexicalScop...
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Android XML Percent Symbol

...ol (aapt) has become very strict in its latest release and is now used for all Android versions. The aapt-error you're getting is generated because it no longer allows non-positional format specifiers. Here are a few ideas how you can include the %-symbol in your resource strings. If you don't nee...
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iOS 7 UIBarButton back button arrow color

...ler.navigationBar.tintColor = [UIColor whiteColor]; *If you are using an app with more than 1 navigation controller, and you want this chevron color to apply to each, you may want to use the appearance proxy to set the back button chevron for every navigation controller, as follows: [[UINavigatio...
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How to use the 'main' parameter in package.json?

...t to your program. That is, if your package is named foo, and a user installs it, and then does require("foo"), then your main module's exports object will be returned. This should be a module ID relative to the root of your package folder. For most modules, it makes the most sense...
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What are best practices for multi-language database design? [closed]

...e language. In some cases we add a DefaultLanguage field, so that we can fall-back to that language if no localized data is available for a specified language. Example: Table "Product": ---------------- ID : int <any other language-neutral fields> Table "ProductTranslation...
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What is the GAC in .NET?

... Right, so basically it's a way to keep DLLs globally accessible without worrying about conflicts. No more DLL Hell. Each architecture and version gets it's own place to live. It also gets it own way to browse it in Explorer, so if you go...
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Unbalanced calls to begin/end appearance transitions for

... You can generate this warning by presenting the modal vc before the app is done initializing. i.e. Start a tabbed application template app and present a modal vc on top of self.tabBarController as the last line in application:didFinishLaunching. Warning appears. Solution: let the stack unw...
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读二进制文件追加到列表 - App应用开发 - 清泛IT社区,为创新赋能!

...都可以指定数据长度,一次处理一大块二进制数据{:8_352:}App Inventor 2  发表于 2024-06-06 19:28 按每一字节处理二进制肯定是不可取的方式,一般包括蓝牙读写二进制等函数,都可以指定数据长度,一次处理一 ... 您好!我是...
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如何实现心电图曲线 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

...于 2024-06-21 17:03 编辑 我想做一个采集数据,显示曲线的app,类似下图显示心电图和心率这样的曲线,请问需要用什么控件实现,如果实现多条曲线又该怎么办? 简单的图表使用原生组件可以实现: 有五种不同的图表类型,...
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How can we programmatically detect which iOS version is device running on? [duplicate]

I want to check if the user is running the app on iOS less than 5.0 and display a label in the app. 10 Answers ...