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iOS开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...中断。中断时输出如下: 同时也可以设置Ignore参数,会忽略前面n次的断点运行,会在第n+1次中断。 调试输出如下: 同时,还可以查看某个函数被调用的次数,设置Action参数如下,注意要选中Automatically continue after evaluating ac...
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App Inventor 2 列表积木完全指南:从入门到精通,一篇搞定数据存储 - App...

...在遍历前做安全检查时非常有用,避免对空列表操作导致报错。 4. 随机选取列表项 随机选取列表项 从列表中随机返回一个元素。如果列表为空会抛出异常,所以务必先判空。 5. 求对象在列表中的位置 求对象在列表中...
https://bbs.tsingfun.com/thread-3119-1-1.html 

App Inventor 2 里那十几个传感器,被问最多的9个问题一次说清 - App应用开...

...一条。Q1: 手机上没有对应的硬件,用了这个组件会不会报错?A: 绝大多数情况下不会崩溃,但数据会是空的或恒为0。App Inventor 2 的传感器组件在设计上都带有一个"可用状态"属性。以气压传感器 Barometer、湿度传感器 Hygro...
https://www.tsingfun.com/it/tech/1480.html 

windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...异常时需要对异常进行处理 gn 直接运行等同于g命令,但忽略异常 gu 执行到当前函数结束, 快捷键shift+F11 p 逐条运行,遇到Call直接步过, 快捷键 F10 pa 执行到指定地址 pc 执行到下一个Call的入口 pct 执行到下一个Call的入口...
https://www.tsingfun.com/it/tech/1080.html 

Memcached下一站:HandlerSocket! - 更多技术 - 清泛网 - 专注C/C++及内核技术

...5.1.37的源代码目录里不知何故竟然没有这个文件,所以就报错了,既然知道了原因,那我们就照猫画虎做一个VERSION文件放到MySQL源代码目录,内容如下: MYSQL_VERSION_MAJOR=5 MYSQL_VERSION_MINOR=1 MYSQL_VERSION_PATCH=37 MYSQL_VERSION_EXTRA= 再...
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RESTful API methods; HEAD & OPTIONS

...T for use with a proxy that can dynamically switch to being a tunnel (e.g. SSL tunneling [44]). " ... may be helpful to post another question on one of the stackexchange.com sites about it... – sdolgy Jul 12 '11 at 6:17 ...
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Set up DNS based URL forwarding in Amazon Route53 [closed]

... Unfortunately, when using a CNAME to access an S3 bucket, you can't force SSL by adding "https" because Amazon isn't hosting a certificate for "*.example.com". Since S3 won't allow the connection, we never get to the redirect logic. Unfortunately, I can't see a workaround to this. ...
https://bbs.tsingfun.com/thread-3069-1-1.html 

地图组件做App到底怎么选?我踩完6个坑,帮你总结了这份横评 - App应用开发...

...动创建Marker 隐藏彩蛋:Circle组件做地理围栏 很多人忽略了Circle组件。它不只是"画个圆"那么简单。 Circle的到坐标的距离方法可以判断某个点是否在圆内(返回0表示在圆内)。结合位置传感器,你可以实现: • ...
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PHP Session Fixation / Hijacking

...on't understand such a great answer but missing the most import piece: use SSL/HTTPS. The counter increment is a source of problem with multiple request fast after each other, a user refreshes a page twice or hits a submit buttons twice. The IP address solution is a problem nowadays with all the mob...
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Sticky and NON-Sticky sessions

...he LB with the web servers private key, so that it is able to break up the SSL connection and fetch the HTTP session? Or does the LB simply make use of the client IP adress? In this case, what about proxy server where multiple clients use the same IP-address? Or even worse, mobile clients, where the...