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离线版启动超时 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
竟然还能碰上 8088 是 ipv6 的一部分！
黄金矿工 - .aia 案例源码 - 清泛IT社区，为创新赋能！
屏幕数量：3个，代码块600左右，主要用到画布和图像精灵，代码比较精炼，有很好的学习参考价值。
APP Inventor 空字符串怎么表示？ - App应用开发 - 清泛IT社区，为创新赋能！
Q：APP Inventor 空字符串怎么表示？
A：文本下的字符串，不填写任何内容，就是空字符串。
详见文档：https://www.fun123.cn/reference/blocks/text.html#string
如何设置App不随着屏幕旋转而旋转？ - App Inventor 2 中文网 - 清泛IT社区...
Q：如何设置App不随着屏幕旋转而旋转？
A：Screen1 的属性中设置屏幕方向为“锁定竖屏”就可以啦！
学习到了！！
用户反馈定时器中调用方法会非预期循环？！ - 用户反馈 - 清泛IT社区，为创...
这个都测试过，应该不会，需要根据相同的场景进行一次测试。
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
...
Indeed, that won't be efficient at all.
You could always write an extension method:
public static TValue GetValueOrDefault<TKey,TValue>
(this IDictionary<TKey, TValue> dictionary, TKey key)
{
TValue ret;
// Ignore return value
dic...
Calling async method synchronously
...nc().Result;
Note: In some cases, this might lead to a deadlock: Your call to Result blocks the main thread, thereby preventing the remainder of the async code to execute. You have the following options to make sure that this doesn't happen:
Add .ConfigureAwait(false) to your library method or...
Calculate distance between two points in google maps V3
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@EmanuelePaolini - Mathematically, atan2(sqrt(a),sqrt(1-a)) = asin(sqrt(a)) = acos(sqrt(1-a)), but the atan2 version remains numerically better conditioned for all values of a.
– ChrisV
Dec 19 '14 at 18:00
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`Apache` `localhost/~username/` not working
...s:
<Directory "/Users/kevin/Sites/">
Options Indexes MultiViews
AllowOverride None
Require all granted
</Directory>
Make sure to restart the Apache server afterwards with:
sudo apachectl restart
share
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How can we run a test method with multiple parameters in MSTest?
NUnit has a feature called Values, like below:
9 Answers
9
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