qbig

function getOriginAddress(bytes32 signedMessage, uint8 v, bytes32 r, bytes32 s) constant returns(address) {
  bytes memory prefix = "\x19Ethereum Signed Message:\n32";
  bytes32 prefixedHash = keccak256(prefix, signedMessage);
  return ecrecover(prefixedHash, v, r, s);
}

qbig

const message = web3.sha3('Hello World');
const signature = await web3.eth.sign(account, message);
const { v, r, s } = ethUtil.fromRpcSig(signature);

danielsaul

type Store struct {
	q Querier
}

type DB interface {
	Querier
	Beginx() (*sqlx.Tx, error)
}

type Tx interface {

asselstine

# Javascript Node CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-javascript/ for more details
#
#
version: 2
jobs:
  build:
    docker:
      # specify the version you desire here

qbig

A "break" statement terminates execution of the innermost "for", "switch", or "select" statement within the same function.

Infinite Loop!!!!

package main

import (
	"fmt"
	"time"
)

qbig

ultimate "zero" value

'nil' is surprising NOT a keyword, but a predeclared identifier

nil of different types means completely DIFFERENT thing!!! eg. nil pointer is different from nil interface !!!

things that could be nil.

map, slice, pointer, interface, channel, func "nil is predeclared identifier representing the zero value for a point, channel, func, interface, map or slice"

nil

• pointer: points to nothing

swalkinshaw

Moved to Shopify/graphql-design-tutorial

dominiek

const message = web3.sha3('Hello World');
const signature = await web3.eth.sign(account, message);
const { v, r, s } = ethUtil.fromRpcSig(signature);

elliotforbes

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"

	"github.com/gorilla/mux"
	"github.com/jinzhu/gorm"

pseudomuto

package main

import (
	"database/sql"
	"log"
)

func main() {
	db, err := sql.Open("VENDOR_HERE", "YOUR_DSN_HERE")
	handleError(err)