solidity blockchain

In the course of my research on the technology of Ethernet square, due to the relatively few data, it took a lot of detours. So here we will not first introduce the grammatical structure of solidity, but will be in the next phase, from the actual combat, to introduce you to Geth, browser-solidity, mist these three tools, and in the process of constantly explaining the basic concept of the ether. Through the

blockchain business implementation, the business implementation is through the intelligent contract to achieve maximum flexibility and the bottom of the non-modification. Ethereum is: EVM virtual machine, solidity contract language; Hyperledger is: Shim chain code container, use go to write contract. The official version is implemented using the go language. because of the provision of third-party prog

Now we have read the technical logic of many overseas blockchain projects. In fact, there are also a lot of domestic high-quality blockchain projects, and the momentum is very strong, so it cannot be underestimated. I introduced several domestic blockchain projects in the previous article, but I gave a brief overview from the perspective of development and did no

Blockchain trend technology has entered the technology market since its launch. In a short time, it became the headlines and sudden news of newspapers and news channels respectively. In this case, the development of blockchain attracts many entrepreneurs.Experts claim that in the next few years, this technology world will become a blockchain world, and every comp

question of the Byzantine general Four generals discuss the timing of the attack on Byzantium, in which any three of them can agree and win. As a result of their lack of mutual trust, they could not be in the same room and could only express their views to other generals through correspondence, for example, in the first round of communication, there could be 4 generals. So, how to coordinate, let everybody's attack time coincide. In such a case, if 40 people, or more people, how to coordinate i

I. Introduction to intelligent Contract IDE Currently, Ethereum supports three languages to write smart contracts, Solidity: Similar to JavaScript, this is the official Ethereum recommendation language and the most popular smart contract language. For specific usage, take the solidity document, address: https://solidity.readthedocs.io/en/latest/ Serpent: Python-like style, document address: Https://github.

): Complex types, such as arrays (arrays) and data structures (structs) have an additional attribute in solidity, where data is stored in the same way that data is stored, temporarily or permanently. Optional memory (temporary) and storage (permanent). Memory storage location is consistent with our normal program. That is, the allocation, that is, the use, beyond the scope is not accessible, waiting to be recycled. In the

Blockchain is one of the hottest technical terms of the last two years, and it is considered to be the core technology that has the potential to trigger the fifth round of disruptive revolutions, and most people are consensus about how the blockchain really changes the world. With the traditional industry gradually joined the block chain army, I found in the actual block chain, we have a lot of common misun

Blockchain, simply put, is like a database ledger, which records all the general ledger of historical transactions and is the underlying technology of Bitcoin. However, because of the deviation of the domestic cognition, the blockchain has not been universally accepted in China, so its application is seldom used. But in Beijing Cornerstone trillion Industry Holdings Co., Ltd. CEO Wang Dong, the entire

Basic type conversion in solidity (14) | Getting Started series2017/4/29 posted in Solidity entry seriesClick to view the original text for optimized typography. Implicit conversionsIf an operator can support different types. The compiler implicitly attempts to convert the type of an operand to the type of another operand, with the same assignment. In general, the semantics can be converted as

Solidity Tutorial Series The third-solidity function type introduction. It 's written in front . Solidity is the Ethernet Square Intelligent Contract programming language, before reading this article, you should have an understanding of the ether square, the intelligent contract, if you do not understand, suggest you first look at the etheric square is what The f

If the consensus mechanism is the core of the soul of the blockchain, then for the blockchain, especially the alliance chain and private chain, cross-linking technology is the key to realize the value network, it is to save the alliance chain from the separate isolated islands to rescue the medicine, is the blockchain outward expansion and connection of the bridg

Recently in the development of an application based on the Ethereum blockchain, so the internet search data, found on-line data too little, because this technology in the domestic less research, many problems can not find the answer, I will these two days of their own summary written, hoping to help everyone First of all we want to download the Ethereum client tool, I refer to the online video "Http://ethcast.com/v1", because I do not have any basis

noun Block Chain: Block chain Utxo:unspent Transaction output, non-spent trade outputs Genesis BLOCK: Blocks 0, Genesis block Spv:simplified Payment Verification, simple payment verification Bip:bitcoin improvement proposal, Bitcoin improvement proposal Proof of work: proof of workload block Chain The blockchain provides a public account of Bitcoin, an orderly, time-stamped transaction (transaction) record. The system is designed to prevent recurring

Intelligent Contract Language Solidity tutorial series the second-solidity address type introduction. It 's written in front . Solidity is the Ethernet Square Intelligent Contract programming language, before reading this article, you should have an understanding of the ether square, the intelligent contract, if you do not understand, suggest you first look at th

200-line code implementation blockchain instance details, 200-line blockchain Understanding the concept of blockchain is very simple (blockchain, transaction chain block): it is distributed (that is, not placed on the same machine, different network devices) the Database supports a growing list of hosting records. Howe

Blockchain QuickStart (eight)--Ethereum, Ethereum IntroductionThe initial goal of the Ethereum (Ethereum) project is to create a platform for running smart contracts (Platform for Smart contract), supporting Turing-complete applications that are automatically executed in accordance with the contract logic of the smart contract, ideally without downtime, censorship, Issues such as fraud and third-party intervention.Ethereum platform currently supports

Assign Value (Assignment) deconstruct assignment and return multiple results (destructing Assignments and returning multip values) The solidity built-in support tuple (tuple), that is, supports a list of possible completely different types, fixed in number (tuple generally refers to two, and a triple generally refers to three). This built-in structure can return multiple results at the same time, and can also be used to assign values to multiple var

This is the 9th article in the Solidity Tutorial series to introduce solidity error handling.Solidity series complete list of articles please see the classification-solidity. It 's written in front . Solidity is an intelligent contract programming language for Ethernet, you should have a better understanding of Etherne

feature of Blockchain Technology 2.0 is the smart contract, which can be used to write smart contracts according to their business needs. Then write the smart contract will involve the specific development language, the current Ethereum Intelligent contract support development languages are: solidity, serpent, lll. Among them solidity is the most important devel