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扩展App Inventor:具有多点触控和手势检测功能 · App Inventor 2 中文网

...in the same set of functionality as Android application program interface (API) does, and its components cannot be modified for programmers’ special needs. Due to the large number of user requests for new components, App Inventor has released a new feature called “App Inventor extensions”, wh...
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扩展App Inventor:具有多点触控和手势检测功能 · App Inventor 2 中文网

...in the same set of functionality as Android application program interface (API) does, and its components cannot be modified for programmers’ special needs. Due to the large number of user requests for new components, App Inventor has released a new feature called “App Inventor extensions”, wh...
https://www.fun123.cn/referenc... 

扩展App Inventor:具有多点触控和手势检测功能 · App Inventor 2 中文网

...in the same set of functionality as Android application program interface (API) does, and its components cannot be modified for programmers’ special needs. Due to the large number of user requests for new components, App Inventor has released a new feature called “App Inventor extensions”, wh...
https://www.fun123.cn/referenc... 

扩展App Inventor:具有多点触控和手势检测功能 · App Inventor 2 中文网

...in the same set of functionality as Android application program interface (API) does, and its components cannot be modified for programmers’ special needs. Due to the large number of user requests for new components, App Inventor has released a new feature called “App Inventor extensions”, wh...
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How can we prepend strings with StringBuilder?

... StringBuilder insert for java: java.sun.com/j2se/1.5.0/docs/api/java/lang/… – Matthew Farwell Apr 12 '09 at 16:21 ...
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How to differentiate single click event and double click event?

...uirksmode.org/dom/events/click.html Or the one provided by jQuery: http://api.jquery.com/dblclick/ share | improve this answer | follow | ...
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How to create index in Entity Framework 6.2 with code first

...released. It includes a possibility to define indexes with ease via Fluent API. Ho it is to use was already announced in the beta of 6.2. Now you can use the HasIndex() method, followed by IsUnique() if it should be an unique index. Just a small comparison (before/after) example: // before mode...
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Find region from within an EC2 instance

...ackends. It will not work anywhere else (essentially because that IP is an APIPA). Also there is no way to get this information directly from inside the instance without connecting to a metadata source. This assumes that the 169.254.169.254 API is available, and your script should handle network fai...
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Difference between /res and /assets directories

...ribed here. None of that is available with assets. Also, many parts of the API support the use of resource identifiers. Finally, the names of the resources are turned into constant field names that are checked at compile time, so there's less of an opportunity for mismatches between the code and the...
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How to capitalize the first letter in a String in Ruby

The upcase method capitalizes the entire string, but I need to capitalize only the first letter. 8 Answers ...