Lisk is a blockchain application platform and crypto-currency, which offers an all round solution for Node.js and JavaScript developers to deploy their own blockchain applications.
You can find a very nice documentation about Lisk here but some useful iformation like the complete database structure are missing.
This gist aims at telling you more about where the Lisk blockchain is stored. The following notes are taken from the study of Lisk testnet 0.9.3a version.
from a newbie to newbies
I believe that a development environment is one of the access key in learning new technologies. I didn't find on the internet a simple and common path to make the Ropsten network, the Ethereum public testnet, work.
So I'm writing down a couple of command lines and links that can be useful to achieve it.
Useful link for requirements: How To Deploy a Flask Application on an Ubuntu VPS
Under /var/www folder you should have a structure like following
/var/www/
/var/www/project-name/
/var/www/project-name/project-name.wsgi
/var/www/project-name/project/__init__.py
map() , filter() , reduce() etc.
The following page gives a good overview over the various methods you can use on the array prototype.
Feel free to click through them and refresh your knowledge as required:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
Particularly important are:
About let : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let
About const : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const
let and const basically replace var.
You use let instead of var and const instead of var if you plan on never re-assigning this "variable" (effectively turning it into a constant therefore).
Remember they are block scoped.
Minimal SC sample exposing a way to get the bytecode and the hashed bytecode of a deployed smart contract.
This without the new OPCODE of EIP1052
pragma solidity ^0.4.24;
contract SomeContractInstance {
constructor () public {}
}
contract Wallet {
...
address public logic_;
/**
* @dev Deposit any ERC20 token into this wallet.
* @param _token The address of the existing token contract.
* @param _amount The amount of tokens to deposit.
* @return Bool if the deposit was successful.
*/
pragma solidity ^0.5.2;
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
interface IERC20 {
function transfer(address to, uint256 value) external returns (bool);
| # be sure that the docker daemon is running before you start this script | |
| # | |
| # this script will create an alias at the end, so please run it with: | |
| # | |
| # source starteos.sh | |
| # | |
| # see https://developers.eos.io/eosio-nodeos/docs/docker-quickstart | |
| docker pull eosio/eos-dev:v1.2.5 # pull eosio image | |
| docker network create eosdev # create an eos network(see docker networking) |
| echo "Stopping container.." | |
| docker stop keosd | |
| docker stop nodeos | |
| echo "Removing container.." | |
| docker rm keosd | |
| docker rm nodeos | |
| echo "Removing network.." | |
| docker network rm eosdev |