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一文讲透区块链技术原理 - 资讯 - 清泛网 - 专注C/C++及内核技术
...中的椭圆曲线数字签名算法(ECDSA)来实现去中心化的P2P系统设计。但区块链的作用不仅仅局限在比特币上。现在,人们在使用“区块链”这个词时,有的时候是指数据结构,有时是指数据库,有时则是指数据库技术,但无论是...
What is the list of possible values for navigator.platform as of today? [closed]
... know that this changes quite often, but is there a list as exhaustive as possible out there of the possible values returned by navigator.platform ?
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常用Linux命令详解(持续更新) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...h;ntpl 命令可以查看系统端口及IP的绑定情况。
13.查看操作系统版本及位数(32位或64位)
uname -a 命令可以查看Linux系统内核版本及系统位数(i386:32位,x86_64:64位)。
(清泛网会对此文进行持续整理、改进。)
Linux 命...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...地找出和判断ros的运行状态,调试信息是非常重要的。从操作系统得到默认的调试输出很容易,但是这些输出对于定位问题尤其是bugs没有太大作用。
本文旨在告诉读者如何生成有用的调试信息,通过这些信息可以直接判断出操...
MFC子窗口和父窗口(SetParent,SetOwner) - C/C++ - 清泛网 - 专注C/C++及内核技术
MFC子窗口和父窗口(SetParent,SetOwner)在windows系统中,每个窗口对象都对应有一个数据结构,形成一个list链表。系统的窗口管理器通过这个list来获取窗口信息和管理每个窗口。一、概念和区别
在windows系统中,每个窗口对象都对...
How do I set environment variables from Java?
...e touching my environment?)
I think you've hit the nail on the head.
A possible way to ease the burden would be to factor out a method
void setUpEnvironment(ProcessBuilder builder) {
Map<String, String> env = builder.environment();
// blah blah
}
and pass any ProcessBuilders thro...
Relative imports in Python 2.7
... name will be __main__. When a module is run as the top-level script, it loses its normal name and its name is instead __main__.
Accessing a module NOT through its containing package
There is an additional wrinkle: the module's name depends on whether it was imported "directly" from the directory...
Compiling simple Hello World program on OS X via command line
I've got a simple hello world example that I'm trying to compile on OS X, named hw.cpp :
8 Answers
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How to install Homebrew on OS X?
I'm trying to install Homebrew on OS X.
13 Answers
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Error executing command 'ant' on Mac OS X 10.9 Mavericks when building for Android with PhoneGap/Cor
Today I tried PhoneGap/Cordova with Mac OS X Mavericks . Building for iOS went just fine, but building for Android wasn't without some guesswork.
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