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为什么你得学些 TCP 的知识? - 环境配置 - 清泛IT社区,为创新赋能!
这不是指要明白 TCP 的所有东西,也不是说要通读 《TCP/IP 详解》。不过懂一点 TCP 知识是很有必要的。理由如下:
当我还在 Recurse Center 的时候,我用 Python 写过 TCP 协议栈(还写过一篇文章:如果你用 Python 写 TCP 协议栈会遇到...
Linux 网卡速率(百兆/千兆)的查看及调整 - 操作系统(内核) - 清泛网 - 专...
...et/{ethXXX}/speed #查看某网卡的速率(MB)(百兆or千兆等)
ip -d link #查看网卡工作状态:UP -启用;DOWN -未启用
ethtool -s {ethXXX} [speed 10|100|1000] #设置网卡速率为10M/100M/1000M
注:上述命令仅限于物理机查看,虚拟机无效,虚拟机...
Linux修改主机名(不过需谨慎!) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...说修改主机名需要谨慎?
Linux主机名的重要性几乎就和 IP地址等同了,因此部分程序的工作会依赖主机名,有些机器重启就能自动切换新的主机名,但是还有一些比如编译期间指定了旧的主机名,改名后有可能会无法工作,笔...
【持续更新】App Inventor 2 中文拓展一览 - App Inventor 2 中文网 - 清泛...
...项目文件中提取.aix拓展包
中文网拓展
【剪贴板】 Clipboard 拓展:实现剪贴板的复制粘贴功能
【短信平台接入】 AliSms 拓展:阿里云短信平台接入,短信验证码
【设备信息】 PhoneInfo 拓展:获取手机等设备软硬件、版本等...
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...
...bViewer 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 自动渲染成视频
其...
if A vs if A is not None:
...back to database stuff. There's a big difference between NULL and an empty string. An empty string typically says "there's a value here, and that value is nothing at all". NULL says "this value hasn't been entered."
In each of those cases, you'd want to use if A is None. You're checking for a speci...
PostgreSQL: How to change PostgreSQL user password?
...ere's a difference, and in a DML query you have to use ' when dealing with strings, but is there a special reason to use both of them here?
– Boyan
Mar 23 '16 at 11:17
8
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Why can't Python parse this JSON data?
...
That is why your text is type unicode not string. Most time it is better to have text in unicode for german umlauts and for sharing text results with other modules/programs etc. . So you're good!
– Michael P
Aug 29 '15 at 11:56
...
Parse JSON String into a Particular Object Prototype in JavaScript
I know how to parse a JSON String and turn it into a JavaScript Object.
You can use JSON.parse() in modern browsers (and IE9+).
...
What is RSS and VSZ in Linux memory management
...ypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
typedef struct {
unsigned long size,resident,share,text,lib,data,dt;
} ProcStatm;
/* https://stackoverflow.com/questions/1558402/memory-usage-of-current...
