大约有 232 项符合查询结果（耗时：0.0071秒） [XML]
Fastest hash for non-cryptographic uses?
... if you have the benefit/luxury of a newer Intel cpu, there is a crc32c assembly command that is...probably really fast (though isn't the traditional crc32 value). See also xxhash code.google.com/p/xxhash
– rogerdpack
Dec 2 '13 at 20:34
...
String literals: Where do they go?
...rt literals, I could see the compiler generating code such as movb $65, 8(%esp); movb $66, 9(%esp); movb $0, 10(%esp) for the string "AB", but the vast majority of the time, it will be in a non-code segment such as .data or .rodata or the like (depending on whether or not the target supports read-on...
How can one see content of stack with GDB?
...o
To read the memory at given addresses you should take a look at x
x/x $esp for hex x/d $esp for signed x/u $esp for unsigned etc. x uses the format syntax, you could also take a look at the current instruction via x/i $eip etc.
...
Is errno thread-safe?
...0: 55 push ebp
1: 89 e5 mov ebp,esp
3: 83 e4 f0 and esp,0xfffffff0
6: e8 fc ff ff ff call 7 <main+0x7> ; get address of errno in EAX
b: c7 00 00 00 00 00 mov DWORD PTR [eax],0x0 ; store 0 in errno
11: b8 00...
HTML-parser on Node.js [closed]
... processing HTML without overhead of creating DOM.
– esp
Apr 20 '13 at 18:19
@esp Thanks, Before I thought it was non-...
App Inventor 2 IoT 参考文档 · App Inventor 2 中文网
...题：经典蓝牙(SPP)，低功耗蓝牙(BLE)，WIFI，物联网，MQTT，ESP32，Ardruino等相关硬件控制方法。
【BLE中文文档】App Inventor 2 低功耗蓝牙 BlueToothLE 拓展
【科普】低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别
【BLE通用教程】App Inventor ...
BLE通信数据不能超过20字节？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...没问题，用AI2就截断了，只有20字符。
答复：
1-在 ESP32 代码中，我放置了这一行：BLEDevice::setMTU(192);
2- 在应用程序中，我将调用 Request MTU 放在 .Connected 块上，请求相同的 192 字节；
就我而言，当我必须发送< 23字节的...
有没有其他方式 在app上接收jpeg数据流变成视频？ - App应用开发 - 清泛IT...
...方案：WebViewer 直接加载 MJPEG URL ⭐
最简单有效，适合 ESP32-CAM、IP 摄像头等场景：
组件: WebViewer1
属性: HomeURL = "http://192.168.4.1/stream"
EnableJavaScript = True
原理：MJPEG 本质是服务器连续发送 JPEG 帧，WebViewer 自动渲染成视...
How do function pointers in C work?
...ring function is called in order to set up the function pointers to their respective functions:
String newString()
{
String self = (String)malloc(sizeof(struct String_Struct));
self->get = &getString;
self->set = &setString;
self->length = &lengthString;
s...
App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...者开发动机
对于一个项目，应该开发一个与 ESP8266（项目）通信的 Android 应用程序。为了轻松开发应用程序，选择了 MIT App Inventor 2。
项目中可用的 ESP8266 设备的 IP 地址不应固定。应用程序本身应该确定哪些设备当前...