xpepermint

1. Build GraphQL server using `express-graphql` package.
2. Configure `schema.js` file.
3. Query for data.

xpepermint

var path = require('path');
var webpack = require('webpack');
var isProduction = process.env.NODE_ENV === 'production';

/*
* Compile for usage in a browser-like environmen or for the server.
*/

exports.target = 'web';

xpepermint

use std::fs::File;
use std::io::Read;

fn main() {
  let mut f = File::open("/dev/urandom").unwrap(); // from Linux
  let mut buf = [0u8; 16];
  f.read_exact(&mut buf).unwrap();

  println!("{:?}", buf);
}

xpepermint

Commands

Install dependencies:

npm install -g @microsoft/rush

Initialize the project:

xpepermint

const { Cert } = require('@0xcert/cert');
const { HttpProvider } = require('@0xcert/ethereum-http-provider');
const { AssetLedger } = require('@0xcert/ethereum-asset-ledger');

(async () => {

  const schema = {
    "$schema": "http://json-schema.org/draft-07/schema",
    "description": "A digital assets that have a unique combination of different properties.",
    "properties": {

xpepermint

use std::ops;

#[derive(Debug, Default, Clone, Copy, Eq, Hash, PartialEq, PartialOrd, Ord)]
pub struct U32(u32);

impl ops::Add for U32 {
    type Output = Self;
    fn add(self, rhs: Self) -> Self {
        Self(self.0 + rhs.0)
    }

xpepermint

```rs
// Based on: https://www.reddit.com/r/rust/comments/ehr8ct/announcing_impls_a_macro_to_determine_if_a_type/

// trait for T
trait TTrate {
    const VALUE: bool = false;
}
impl<T> TTrate for T {}

// custom trait

xpepermint

'use strict';

/**
* Webpack Configuration File
*
* This is a configuration file for Webpack module bundler. You should customize
* it to fit your project.
*
* To start the development server run:
*

xpepermint

// Parameter that each resolver accepts.
pub struct Intent {}

// Resolver definition.
pub trait Resolver {
    fn resolve(&self, intent: Intent) -> Result<usize, usize>;
}
impl<F: Fn(Intent) -> Result<usize, usize>> Resolver for F {
    fn resolve(&self, intent: Intent) -> Result<usize, usize> {
        self(intent)

xpepermint

```
docker run -d \
  --name geth-test \
  -p 8545:8545 \
  -v ~/.docker/machine/volumes/geth-test/data:/root/.ethereum \
  ethereum/client-go \
  --testnet \
  --rpc \
  --rpcaddr "0.0.0.0" \
  --rpccorsdomain "*" \