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App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
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HC05 简单介绍
基本接入代码参考
常见问题解决
Error 515: Not connected to a Bluetooth device.
Error 507: unable to connect. is the device turned on?
乱码问题排查思路
参与讨论
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经典蓝...
How many threads is too many?
...acks and so on) since a thread doing no work will not be using much of the CPU. (B) will generally be a delay in the processing of requests as they arrive as you need to wait for a thread to become available.
That's why you measure. As you state, the vast majority of your threads will be waiting fo...
Difference between global and device functions
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__global__ - Runs on the GPU, called from the CPU or the GPU*. Executed with <<<dim3>>> arguments.
__device__ - Runs on the GPU, called from the GPU. Can be used with variabiles too.
__host__ - Runs on the CPU, called from the CPU.
*) __global__ funct...
What is the difference between the kernel space and the user space?
...when a system call occurs, a software interrupt is sent to the kernel. The CPU may hand over the control temporarily to the associated interrupt handler routine. The kernel process which was halted by the interrupt resumes after the interrupt handler routine finishes its job.
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OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
OS X10.9 环境下部署 QT5.3.1 常见的编译问题出于本身对UNIX系统的好奇，以及身边一群对 Swift 语言各种推崇的苹果教徒的影响，这几天折腾起 MAC OS X来，体验下这个被无数开发者...
出于本身对UNIX系统的好奇，以及身边一群对 Swift ...
MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...EraseBkgnd浅析在使用VC进行绘图时，最郁闷的就是屏幕闪烁问题。有时只能使用双缓冲去解决，当然更多的时候是去忍受。有没有什么这种的方法？有，那就是重 在使用VC进行绘图时，最郁闷的就是屏幕闪烁问题。有时只能使用...
How to determine why visual studio might be skipping projects when building a solution
... configured for "Mixed Platforms" while the solution was set to build "Any CPU".
*When this problem happened to me, The main project only had 'Any CPU' and it set the child dll to 'any CPU' too, however, I'd deleted that profile and left only 'x86'. Picking x86 for just the dll make it start worki...
C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
C语言面试那些事儿──一道指针与数组问题首先看如下代码：int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
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App Inventor 2 代码调试方式：App调试、问题排查方法 · App Inventor 2 中文网
... App Inventor 2 代码调试方式：App调试、问题排查方法
App Inventor 2 调试方式
“标签”调试法
”预览代码块“调试功能
adb 调试：万能利器，调试拓展、查App崩溃
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How are 3D games so efficient? [closed]
...ve never understood. How can a great big PC game like GTA IV use 50% of my CPU and run at 60fps while a DX demo of a rotating Teapot @ 60fps uses a whopping 30% ?
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