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App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网

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Allow Google Chrome to use XMLHttpRequest to load a URL from a local file

...-security On Windows: chrome.exe --disable-web-security On Mac: open /Applications/Google\ Chrome.app/ --args --disable-web-security This will allow for cross-domain requests. I'm not aware of if this also works for local files, but let us know ! And mention, this does exactly what you expec...
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Checking if an Android application is running in the background

By background, I mean none of the application's activities are currently visible to the user? 30 Answers ...
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How to specify HTTP error code?

... I'd like to centralize the creation of the error response in this way: app.get('/test', function(req, res){ throw {status: 500, message: 'detailed message'}; }); app.use(function (err, req, res, next) { res.status(err.status || 500).json({status: err.status, message: err.message}) }); So ...
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Migrating from JSF 1.2 to JSF 2.0

I am working with a rather large app written in JSF 1.2 . JSF 1.2 is around 6 years old now. I need to upgrade to JSF 2.0. How painful will this be? I noticed that some attributes in custom tags have been changed etc. ...
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Force drop mysql bypassing foreign key constraint

...er that was exactly my objective, and has been since I joined this site. I appreciate your point of view. – Otávio Décio Feb 7 '17 at 13:57 3 ...
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How to check whether a file or directory exists?

I want to check the existence of file ./conf/app.ini in my Go code, but I can't find a good way to do that. 5 Answers ...
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What are Flask Blueprints, exactly?

... A blueprint is a template for generating a "section" of a web application. You can think of it as a mold: You can take the blueprint and apply it to your application in several places. Each time you apply it the blueprint will create a new version of its structure in the plaster of ...
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How to provide animation when calling another activity in Android?

...ivityOptionsCompat if you are using the Support Library. API 5+: For apps targeting API level 5+ there is the Activities overridePendingTransition method. It takes two resource IDs for the incoming and outgoing animations. An id of 0 will disable the animations. Call this immediately after the...
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Removing an activity from the history stack

My app shows a signup activity the first time the user runs the app, looks like: 15 Answers ...