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淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...也根本到不了最后的下单步骤，所以真正的并发写就非常有限了。其实这种设计思路目前也非常普遍，如支付宝的“咻一咻”已及微信的摇一摇。
除了在前端通过答题在用户端进行流量削峰外，在服务端一般通过锁或者队列来...
How do I check OS with a preprocessor directive?
...d Lambda Fairy's answer.
#include <stdio.h>
/**
* Determination a platform of an operation system
* Fully supported supported only GNU GCC/G++, partially on Clang/LLVM
*/
#if defined(_WIN32)
#define PLATFORM_NAME "windows" // Windows
#elif defined(_WIN64)
#define PLATFORM_NAME "w...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...document.write(new Date().getFullYear()); 跟着学（上海）教育科技有限公司 版权所有，未经书面许可，不得转载或使用 隐私策略和使用条款 官方QQ群483928335 #free_v { border:none; position:fixed; top:40%; left:5px; width:200...
程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...称。
传统的DES由于只有56位的密钥，从1997年开始，RSA公司发起了一个称作“向DES挑战”的竞技赛。在首届挑战赛上，罗克·维瑟用了96天时间破解了用DES加密的一段信息。1999年12月22日，RSA公司发起“第三届DES挑战赛（DES Challen...
Difference between “\n” and Environment.NewLine
...
Depends on the platform. On Windows it is actually "\r\n".
From MSDN:
A string containing "\r\n" for
non-Unix platforms, or a string
containing "\n" for Unix platforms.
...
How can I use Python to get the system hostname?
...us what's the difference between socket.gethostname() and os.uname()[1] or platform.uname()[1]
– LetsOMG
Mar 23 '18 at 21:52
...
How do I check the operating system in Python?
...
You can use sys.platform:
from sys import platform
if platform == "linux" or platform == "linux2":
# linux
elif platform == "darwin":
# OS X
elif platform == "win32":
# Windows...
sys.platform has finer granularity than sys.na...
How can I deploy an iPhone application from Xcode to a real iPhone device?
...in/sed -i .bak 's/XCiPhoneOSCodeSignContext/XCCodeSignContext/' /Developer/Platforms/iPhoneOS.platform/Info.plist
If you have Xcode open, restart it for this change to take effect.
And if you're on iOS 5, that's it! Try it now! It may not allow debugging, but the app will be there!
I was very s...
Is it possible to install iOS 6 SDK on Xcode 5?
...be found within the installer package at:
Xcode.app/Contents/Developer/Platforms/
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How do I check if I'm running on Windows in Python? [duplicate]
I found the platform module but it says it returns 'Windows' and it's returning 'Microsoft' on my machine. I notice in another thread here on stackoverflow it returns 'Vista' sometimes.
...