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Created at 12pm, Apr 7
ProactiveTechnology
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Ethereum Features
Contract ID
vgVaCivdbb7WVGS3AutR7oblw8bS5KSW46OhmzKc1To
File Type
DOCX
Entry Count
140
Embed. Model
jina_embeddings_v2_base_en
Index Type
hnsw

thereum is a decentralized blockchain platform that enables developers to build and deploy smart contracts and decentralized applications (DApps). Here are some key features of Ethereum:Smart Contracts: Ethereum introduced the concept of smart contracts, which are self-executing contracts with the terms of the agreement directly written into code. Smart contracts automatically enforce the rules and facilitate transactions without the need for intermediaries.Decentralization: Ethereum operates on a decentralized network of nodes, which means that no single entity has control over the platform. This decentralized architecture provides security, censorship resistance, and immutability.Ethereum Virtual Machine (EVM): The Ethereum Virtual Machine is a runtime environment that executes smart contracts on the Ethereum network. It allows developers to write code in various programming languages and deploy it on the blockchain.Ether (ETH): Ether is the native cryptocurrency of the Ethereum platform. It is used to pay for transaction fees and computational services on the network. Ether can also be traded on cryptocurrency exchanges and used as a store of value.Gas: Gas is a unit of measurement for the computational work required to execute transactions and smart contracts on the Ethereum network. Users must pay gas fees in Ether to incentivize miners to process their transactions.Scalability Solutions: Ethereum has been working on various scalability solutions to improve transaction throughput and reduce fees. This includes proposals such as Ethereum 2.0, which aims to transition the network to a proof-of-stake consensus mechanism and implement sharding to increase scalability.Interoperability: Ethereum is designed to be interoperable with other blockchains and protocols. This allows for the creation of cross-chain applications and interoperability between different decentralized finance (DeFi) platforms.Development Community: Ethereum has a large and active community of developers, researchers, and contributors who continuously work on improving the platform and building new applications. This vibrant ecosystem has led to the development of a wide range of DApps, DeFi protocols, and developer tools on Ethereum.Overall, Ethereum's features make it a versatile and powerful platform for building decentralized applications, executing smart contracts, and creating innovative blockchain-based solutions

:1) at /usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/w
id: 4b76e98c15f4ae0025ad90ed64766eaa - page: 18
js:86:1 at /usr/local/lib/node_modules/truffle/build/webpack:/~/truffleprovider/wrapper.js:134:1 at XMLHttpRequest.request.onreadystatechange (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/lib/ web3/httpprovider.js:128:1) at XMLHttpRequestEventTarget.dispatchEvent (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/ xhr2.js:64:1) at XMLHttpRequest._setReadyState (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/ xhr2.js:354:1) at XMLHttpRequest._onHttpResponseEnd (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/ xhr2.js:509:1) at IncomingMessage. (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2/lib/ xhr2.js:469:1) at endReadableNT (_stream_readable.js:1106:12) at process._tickCallback (internal/process/next_tick.js:178:19) Our test failed! Lets go into the contract to inspect possible errors. After a careful inspection, well find that the issue with our contract is in the return statement of our addNewItem m
id: 30d9fda3c7aad4d617f9901e7a74a527 - page: 19
push(Item({ name: name, price: price, seller: msg.sender, status: ItemStatus.active })); // Item is pushed to the end, so the lenth is used for // the ID of the item return _items.length; } Since arrays are zero indexed, and we use the array position as an ID, we should actually return _items.length 1. Fix this error and run this again: truffle test You should get a much happier message: TestHashMarket testAddingNewProduct (130ms) 1 passing (729ms) Weve successfully used Truffle testing to fix a very likely error in our code! JavaScript Testing Truffle enables us to use JavaScript for testing, leveraging the Mocha testing framework. This enables you to write more complex tests and get more functionality out of your testing framework. Okay, lets write the test. First, in the test folder, create a file and call it hashmarket.js. The first thing we need to do, is get the reference to our contract in Jav
id: 89e2b7cb5ab715f78c1c6f0c0b41f3c5 - page: 19
For that, well use Truffles artifacts.require(...) function: var HashMarket = artifacts.require("./HashMarket.sol"); Now that we have the reference to the contract, lets start writing tests. To start, well use the contract function provided to us: contract("HashMarket", function(accounts) { }); This creates a test suite for our contract. Now for testing, we use Mocha it syntax: contract("HashMarket", function(accounts) { it("should add a new product", function() { }); }); This describes the test well write and presents a message for us to know the purpose of the test. Now lets write the test itself. At the end, the hashmarket.js file should look like the following. The reasoning is explained in the comments of the source code: var HashMarket = artifacts.require("./HashMarket.sol"); contract("HashMarket", function(accounts) { it("should add a new product", function() { // Set the names of test data var itemName = "TestItem"; var itemPrice = 1000; var itemSeller = accounts; /
id: 457773425b3dcadf83798d05caea4d53 - page: 19
How to Retrieve?
# Search

curl -X POST "https://search.dria.co/hnsw/search" \
-H "x-api-key: <YOUR_API_KEY>" \
-H "Content-Type: application/json" \
-d '{"rerank": true, "top_n": 10, "contract_id": "vgVaCivdbb7WVGS3AutR7oblw8bS5KSW46OhmzKc1To", "query": "What is alexanDRIA library?"}'
        
# Query

curl -X POST "https://search.dria.co/hnsw/query" \
-H "x-api-key: <YOUR_API_KEY>" \
-H "Content-Type: application/json" \
-d '{"vector": [0.123, 0.5236], "top_n": 10, "contract_id": "vgVaCivdbb7WVGS3AutR7oblw8bS5KSW46OhmzKc1To", "level": 2}'