metacoin | Sample project for GSN based on Webpack Truffle Box | Cryptocurrency library

by opengsn JavaScript Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | metacoin Summary

metacoin is a JavaScript library typically used in Blockchain, Cryptocurrency, Ethereum applications. metacoin has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

This a basic metacoin, with minimal modifications to support working through GSN, without the client paying for gas. You still need a wallet, but only for signing transactions, not paying for them. See for the GSN project. The Metacoin itself pays for all transactions. Other than supporting GSN, the project added links to tenderly and etherscan, to ease seeing the various components on the blockchain.

Support

Quality

Security

License

Reuse

Support

metacoin has a low active ecosystem.

It has 27 star(s) with 28 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

There are 3 open issues and 1 have been closed. On average issues are closed in 1 days. There are 9 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of metacoin is current.

Quality

metacoin has no bugs reported.

Security

metacoin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

metacoin does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

metacoin releases are not available. You will need to build from source code and install.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of metacoin

Get all kandi verified functions for this library.

metacoin Key Features

No Key Features are available at this moment for metacoin.

metacoin Examples and Code Snippets

No Code Snippets are available at this moment for metacoin.

Community Discussions

Trending Discussions on metacoin

Can you use Web3.js directly in a Rails 6 app using Webpacker?

Solidity error with balances[] in constructor, "Index expression cannot be omitted"

How to use older solc compilers with Truffle

Ethereum deployed contract not defined in Geth Javascript console

could not find module in loading a json into component in angular4

How to put two function calls in a HTML file?

How to log all of the events emitted by a Contract since it's inception?

Truffle migration error (test rpc is running)

Call deployed smart contract from node.js

Some Truffle tests not running after truffle init (Mac OSX) Uncaught TypeError

QUESTION

Can you use Web3.js directly in a Rails 6 app using Webpacker?

Asked 2020-Feb-06 at 05:54

How can you interact with a local Truffle Ganache blockchain through a Rails 6 app? I have prototyped the FixedSupplyToken app in vanilla javascript, and everything works as expected. Next, I try to move it into a Rails 6 app. I am nervous about using the Ruby gems (ethereum.rb - looking for someone to take over maintenance, others seem abandoned). I am wondering if you can you import web3.js directly into Rails 6 using Webpacker? I created a new Rails 6 app and added the following:

...

ANSWER

Answered 2020-Jan-22 at 02:22

I think this is a naming conflict. You've named your own javascript file web3/index.js, which Webpack sees as web3; that conflicts with the node module you're trying to import by the same name. Try renaming your own javascript folder/file to something else. Related issue: https://github.com/webpack/webpack/issues/4817#issuecomment-316119100

Source https://stackoverflow.com/questions/59845970

QUESTION

Solidity error with balances[] in constructor, "Index expression cannot be omitted"

Asked 2019-Aug-13 at 15:29

New to Solidity and smart contracts, been trying to setup a test environment on Windows but I'm stuck when trying to test run a truffle boxed environment (MetaCoin).

In the constructor below balances[] is doing something wrong. My IDE (vscode with solidity extension) throws a message: "Index expression cannot be omitted". Why is this showing up?

...

ANSWER

Answered 2019-Aug-13 at 15:29

mapping (address => uint) public balances;

Source https://stackoverflow.com/questions/57480522

QUESTION

How to use older solc compilers with Truffle

Asked 2018-Nov-12 at 21:08

I am trying to reproduce the DAO attack that happened on Ethereum, however, I was not able to compile the DAO code. The current stable version of truffle does not support specifying a solc version. I used the 5.0.0 beta 1 version for truffle, which supports specifying a solc version. When compiling the DAO code, I get this error.

...

ANSWER

Answered 2018-Nov-12 at 15:39

As of Truffle 5.0.0 beta -0, you can specify a solcjs version.

I have just tried it in my project and it works. Be sure to make the version number a string and use the following code:

Source https://stackoverflow.com/questions/53196722

QUESTION

Ethereum deployed contract not defined in Geth Javascript console

Asked 2018-Jan-24 at 16:55

I cannot access a deployed and mined Ethereum contract on a private network from the Geth Javascript console. Not sure where the issue is, any help is appreciated.

Thank you in advance for your time.

Scenario

I launched my Geth as below

...

ANSWER

Answered 2018-Jan-24 at 16:55

Geth does not know about MetaCoin. In Geth console, you need to do:

Source https://stackoverflow.com/questions/48426932

QUESTION

could not find module in loading a json into component in angular4

Asked 2017-Nov-21 at 02:05

I am using angular4, in a simple component I am trying to load a json, the json and component are on the same path/folder.

...

ANSWER

Answered 2017-Nov-21 at 02:05

Json is not a module, you cannot load json file as above, you can do it as,

Source https://stackoverflow.com/questions/47404078

QUESTION

How to put two function calls in a HTML file?

Asked 2017-Sep-05 at 13:23

I'm learning Solidity (for smart contracts) and now need to design a UI to interact with a deploy contract.

Note: If the question is not relevant to this forum, please kindly let me know (instead of downvoting) and I'll remove it.

My HTML and .js files are as below. The problem is that, when I include both "distribute()" and "update_exchange_rate()" functions in .js file, my HTML file would not work. But I wouldn't have any problem if I remove either of them from .js file.

Question: Why am I having this problem? How to solve the above problem? Can I have multiple functions (definitions) in window.app?

Edit: If I put both functions in .js files, I also get webpack error. But the error will disappear if I remove one of the functions.

...

ANSWER

Answered 2017-Sep-05 at 13:18

Let's take only this button, the other has the exact same problem...

Source https://stackoverflow.com/questions/46055268

QUESTION

How to log all of the events emitted by a Contract since it's inception?

Asked 2017-Jul-21 at 17:52

I'm currently using the Truffle framework to check but all the documentation is around watching current events.

...

ANSWER

Answered 2017-Jul-21 at 17:52

You need to specify the filter object to get all events from genesis (the crypto-people word for the first block) to now.

The following code should work:

Source https://stackoverflow.com/questions/44253201

QUESTION

Truffle migration error (test rpc is running)

Asked 2017-Jul-01 at 14:03

I'm following a solidity tutorial right now and I'm currently encountering an error when I run truffle migrate. Also, testrpc is running in another terminal tab, so this issue is unrelated to the others on here.

I run truffle init and then add my HelloWorld.sol smart contract to the contracts folder.

...

ANSWER

Answered 2017-Jul-01 at 14:03

1) Run the following command:

Source https://stackoverflow.com/questions/44856642

QUESTION

Call deployed smart contract from node.js

Asked 2017-May-25 at 23:21

I have small test smart contract, which is deployed to my test network. And I want to use a server to call the function in the contract. Here is the code: payontime.sol

...

ANSWER

Answered 2017-Apr-06 at 08:00

contractInstance.wakeUp.call is calling the function as constant, but the function is not defined as constant:

Source https://stackoverflow.com/questions/43241215

QUESTION

Some Truffle tests not running after truffle init (Mac OSX) Uncaught TypeError

Asked 2017-Mar-20 at 21:20

I am trying to build a dapp using truffle. I have installed Testrpc and Truffle globally with NPM. I ran testrpc in a terminal window and ran truffle test. I get 2 passing and 3 failing tests. The three failing tests are

...

ANSWER

Answered 2017-Mar-20 at 21:20

This was a bug. They've fixed it.

Github issue : https://github.com/trufflesuite/truffle/issues/377

So, just re-install truffle

Source https://stackoverflow.com/questions/42893364

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install metacoin

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: