德.摩根De Morgan 和香农Shannon定理


评论

发表评论

此博客中的热门博文

Java Base == & equals

  Tags:  Integer cache, == , equals This Blogger emphasizes that in actual development, developers should prioritize using .equals() to compare object values ​​rather than simply relying on == to compare references. Java's Integer cache mechanism provides memory optimization for Java programs with values ​​in the range of -128 to 127.However, values ​​outside this range will result in the creation of new objects, resulting in unexpected results in == comparisons.       public static void main(String[] args) {         Integer a = 228;         Integer b = 228;         System.out.println(a == b); // false         Integer x = 1;         Integer y = 1;         System.out.println(x == y); // true         Integer c = 228;         Integer d = 228;         System.out.println(System.identityHash...
阅读全文

Inside Ethereum Transactions -

图片
#3 · Inside Ethereum Transactions source :  https://www.dappuniversity.com/articles/web3-js-intro This is the third video in the 8-part tutorial series. This video will show you how to create transactions on The Ethereum Blockchain with Web3.js. This lesson will go from beginner to slightly advanced. I'll show you what happens when an Etherum transaction is created, and I'll show you how to broadcast a transaction manually to the network with Web3.js. In addition to learning Web3.js, the purpose of this lesson is to help you understand the fundamentals about how transactions work on The Ethereum Blockchain. Whenever you create a transaction, you're writing data to the blockchain and updating its state. There are several ways to do this, like sending Ether from one account to another, calling a smart contract function that writes data, and deploying a smart contract to the blockchain. We can get a greater understanding of these concepts by performing these actions w...
阅读全文

Install Oracle 12C 12.1.0.1 on Windows

图片
dbaora .com/ install-oracle-12c-12-1-0-1-on-windows/ /dbaora .com /category/installations/ Install Oracle 12C 12.1.0.1 on Windows Posted on July 11, 2013 This article presents how to quickly install Oracle Database 12C Release 1 (12.1.0.1) on Windows. Software used: Oracle Database 12C Release 1(12.1.0.1) – 64 bit for Windows Windows 8 Pro edition 64 bit Binaries Database 12C Release 1(12.1.0.1) winx64_12c_database_1of2.zip - database software winx64_12c_database_2of2.zip - database software Hardware and software requirements: at least 2GB ram as minimumat least 10G space Windows Server 2008 x64 and up – Standard, Enterprise, Datacenter, Web, and Foundation editions. Windows Server 2012 x64 – Standard, Datacenter, Essentials, and Foundation editions Windows 7 x64 – Professional, Enterprise, and Ultimate editions Windows 8 x64 – Pro and Enterprise editions I installed database software on Windows 8 Pro edition. Grid 12C is not supported for Windo...
阅读全文