ganache | local blockchain for fast Ethereum development | Blockchain library
kandi X-RAY | ganache Summary
kandi X-RAY | ganache Summary
A tool for creating a local blockchain for fast Ethereum development.
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Top functions reviewed by kandi - BETA
- Run user input .
- Creates spaces and adds them to console
- Creates a console container div .
- Escape unsafe HTML for HTML .
- Create the console div .
- check to see if possible
- rece a new EDE
- the ECD array
- recursive function
- this function is needed
ganache Key Features
ganache Examples and Code Snippets
Lines of Code : 31License : Strong Copyleft (CC BY-SA 4.0)
Copyconst assert = require('assert');
const ganache = require('ganache-cli');
const Web3 = require('web3');
//Ganache Provider
const provider = ganache.provider();
const web3 = new Web3(provider);
const { interface, bytecode} = require('../comnpm install -g ganache-cli
ganache-cli
Listening on 127.0.0.1:8545
const web3 = new Web3(ganache.provider()); // web3 is an instance which is connec// test/SimpleAuction.js
const sa = artifacts.require("SimpleAuction");
contract('SimpleAuction', async function(accounts) {
/**
* TimeTravel function - can move this to helper file
* https://www.reddit.com/r/ethdev/comments/6n65aCommunity Discussions
Trending Discussions on ganache
QUESTION
compiled code by py-solc-x, then deployed it to the ganache local network using web3py api. first, call a get_balance function and it return as expected. second, call the transfer function and it return without error, but the balance have not changed when I call get_balance later. try to call transfer by sending a raw transaction but it still no effect...
metacoin.sol (provided by truffle doc)
...ANSWER
Answered 2022-Apr-08 at 08:47Check that the transaction went through
QUESTION
`PLATFORM: win32 GANACHE VERSION: 2.5.4
EXCEPTION:
Error: ENOENT: no such file or directory, rename 'C:\Users\amazi\AppData\Roaming\Ganache\global\Settings.3688509284' -> 'C:\Users\amazi\AppData\Roaming\Ganache\global\Settings' at Object.renameSync (fs.js:643:3) at writeFileSync (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\node_modules\write-file-atomic\index.js:124:8) at Proxy.setItem (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\node_modules\node-localstorage\LocalStorage.js:217:7) at JsonStorage_JsonStorage.setToStorage (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\webpack:\src\main\types\json\JsonStorage.js:48:18) at JsonStorage_JsonStorage.setAll (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\webpack:\src\main\types\json\JsonStorage.js:58:10) at GlobalSettings_GlobalSettings.setAll (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\webpack:\src\main\types\settings\Settings.js:55:19) at GlobalSettings_GlobalSettings.bootstrap (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\webpack:\src\main\types\settings\Settings.js:87:10) at GlobalSettings_GlobalSettings.bootstrap (C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\webpack:\src\main\types\settings\GlobalSettings.js:15:11) at C:\Program Files\WindowsApps\GanacheUI_2.5.4.0_x64__5dg5pnz03psnj\app\resources\app.asar\webpack:\src\main\index.js:235:12`
I tried uninstalling and reinstalling, and it still does not work. This happened randomly too as there are a few packages that I have that when I uninstall and reinstall it does the same for Ganache-CLI, but my CLI works. If I try to install another version of Ganache-UI it does not work either. Is there anything that I must do to fix this. Should I go to the source code, and clone it?
...ANSWER
Answered 2022-Mar-31 at 04:48I was able to install a previous release of Ganache through a .exe file. Apparently, the .appx installers are having problems on Windows 11. I ended up installing a very old release from 2020 that had a .exe file included with it.
That link is v2.5.4 - JohnnyCakes Cobbler
It is the most recent ui release that had a .exe installer. I do not even think that you can go the route of cloning the source code and compiling it into a .exe. From what I saw ganache-ui can only be compiled into a .appx right now.
QUESTION
I am new to blockchain app development, I saw a project where ganache accounts are imported into Metamask, then web3.js is used to access and print those accounts and balances on Frontend (user interface).
If web3.js can directly access ganache blockchain accounts and balances, why do we need Metamask in between?
...ANSWER
Answered 2022-Feb-08 at 09:11If web3.js can directly acccess ganache blockchain accounts and balances, why we need metamask in between?
In this case, you don't need MetaMask to sign the transaction, as the node (Ganache) holds your private key.
But in a public environment (testnets and mainnet), the node doesn't hold your private key, so you'd need to sign the transaction using MetaMask (or any other tool that holds the private key).
QUESTION
I have tried installing truffle on windows powershell with Execution Policy set to "ByPass".
And installing a older version but noting has worked any help is appreciated.
I have node v16.13.0. And have not had any problems before with installing packages.
As well I have the latest version of Virtual studio code.
...ANSWER
Answered 2022-Mar-28 at 07:00Hello did u try npm install --g --production windows-build-tools
Similar problem -> node-gyp configure got "gyp ERR! find VS"
Lot of ppl had similiar issue and this command helped
If nothing will help i can recommend u https://remix.ethereum.org/ its online IDE that simulate everything. (I have good experience with it on Ether and solidity)
QUESTION
I'm building a todoList Web-App using blockchain. I'm stuck when I tried to connect the blockchain server to metamask.
When I try to add new network as mentioned in my Ganache(HTTP://127.0.0.1:7545) then I miss chainID and When I fill the chainID with Genache network Id it shows the given error.
When I try to connect to localhost8545 then it returns this error:
trufle-config.js
...ANSWER
Answered 2021-Oct-23 at 10:50remove default localhost account (i.e. Localhost 8545 ) first and then add the new network with details and chain ID as 1337
QUESTION
I restarted Ganache, and then when I ran the [brownie run scripts/deploy.py --network ganache-local] again, I got an error. However, it was a success before restarting.
How can I fix this error?
I tried deleting the old network and rebuilding a new one, but it didn't work.
...ANSWER
Answered 2022-Mar-28 at 12:08Ok, finally, I delete the build folder and re-compile-->> "brownie compile". The issue was done~
QUESTION
When i tried to install truffle i got these errors :-
I have installed Node.js earlier and also i have pip installed.
...ANSWER
Answered 2022-Jan-26 at 17:42Here are some references that might help:
Try installing Truffle via PowerShell in Admin mode (very important that you're in Admin mode)
You'll need to allow scripts to run as an Admin in PowerShell. To do this, here are some references in the threads in Stack Overflow:
Enable Execution of PowerShell Scripts
I ran the command Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy Bypass -Force in PowerShell to get this to work, but please reference the threads above before doing this.
QUESTION
I am new to the field of blockchain and ethereum. I have been trying to create a simple testing network using truffle and ganache where I created a new workplace in truffle and tried to build a quick react frontend app to connect to the ethereum using Web3.
Everything works fine. I did install the MetaMask and created a new network to the port:7545 and every change that happened to the ganache affected the MetaMask.
This is the code of web3 .
...ANSWER
Answered 2021-Aug-14 at 19:08So I tried the same code using truffle and ganache and it works for me. The only difference is that i am running ganache on port 8545 and connecting metamask with that port in url. I believe that you are providing somewhat incorrect values here const todoList = new web3.eth.Contract(TodoList.abi, ADRESS);
Make Sure that your contract's abi and address is correct. Read details about instantiation of contract object with correct values here
Here is how i am reading the JSON file:
const TodoList = JSON.parse(fs.readFileSync('./build/contracts/TodoList.json', 'utf8'));.
I am simply extracting the abi from it just like your code. For Contract Address part, I get the address manually from the output console after running truffle migrate --reset all.
After this you will get a receipt information in console like this
QUESTION
I was following this quick guide to build a Dapp.
In order to build the user interface and interact with the smart contract, it uses React. There are the functions below:
...ANSWER
Answered 2022-Mar-20 at 05:22The general convention for naming a variable _ within a lamda function is to indicate that you are not going to be using the param that will be passed into the lamda but the consumer of the lamda still expects to pass in variables.
That being said...javascript doesn't require you to do this and would actually work just fine if both listeners expected no arguments.
It should be noted that the _ in
QUESTION
Question: Display the receipt number(s) and its total price for the receipt(s) that contain Twist as one among five items. Include only the receipts with a total price of more than $25.
My attempt:
...ANSWER
Answered 2022-Mar-15 at 10:49Your HAVING clause is incorrect, and in addition you should only be selecting the receipt number and total price sum.
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