大约有 15,000 项符合查询结果（耗时：0.0192秒） [XML]
BLE（三）APP开发步骤 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...晰了许多。首先，可以通过startLeScan、LeScanCallback等方法定位到扫描BLE外围设备的相关代码段；然后，根据connectGatt、BluetoothGattCallback等api锁定设备连接的相关函数，并找到指令交互部分，最后梳理出整个控制流程。
【转】APP Inventor2 调用位置传感器在高德地图上显示当前位置存在偏差？你...
...手机上显示如下，我怎么去湖里了，是坐船去了还是手机定位偏差太大了？都不是，是因为坐标没有经过正确的换算。
将代码改一改，利用高德的Web API进行坐标转换，更详细的坐标转换方法请去高德官网查看。
获取...
横屏布局和手机不太一样 - App应用开发 - 清泛IT社区，为创新赋能！
...手机适应开发的界面布局要通过水平/垂直布局进行相对定位，部分尺寸需要进行动态计算。
有个布局案例可以参考一下：https://bbs.tsingfun.com/thread-1982-1-1.html
Using Java with Nvidia GPUs (CUDA)
...example could be when many complex trigonometric computations (sine/cosine etc) are performed on "few" data elements.
As a rule of thumb: You can assume that reading/writing one data element from the "main" GPU memory has a latency of about 500 instructions....
Therefore, another key point for th...
Allow user to set up an SSH tunnel, but nothing else
... may be tunneling, without an interactive shell, to set that shell in /etc/passwd to /usr/bin/tunnel_shell.
Just create the executable file /usr/bin/tunnel_shell with an infinite loop.
#!/bin/bash
trap '' 2 20 24
clear
echo -e "\r\n\033[32mSSH tunnel started, shell disabled by the system administr...
opengl: glFlush() vs. glFinish()
...appropriate non-OpenGL APIs (e.g. reads from the framebuffer, screenshots, etc...). Whether that is really what happens is driver-dependent. The specification allows a ton of latitude as to what is legal.
share
|...
Get program execution time in the shell
...bash
START=$(date +%s)
# do something
# start your script work here
ls -R /etc > /tmp/x
rm -f /tmp/x
# your logic ends here
END=$(date +%s)
DIFF=$(( $END - $START ))
echo "It took $DIFF seconds"
share
|
...
How many system resources will be held for keeping 1,000,000 websocket open? [closed]
...al info on how the kernel was tuned? max file descriptors/tcp window sizes etc?
– quixver
Jun 21 '14 at 21:14
15
...
Maven: how to do parallel builds?
...alik Yes, exactly, 3 threads on dual core, 6 threads on quad core systems, etc.
– t0r0X
Aug 6 '14 at 11:25
1
...
How to find out the number of CPUs using python
I want to know the number of CPUs on the local machine using Python. The result should be user/real as output by time(1) when called with an optimally scaling userspace-only program.
...