ysv

#!/bin/bash
#####################################################
# Name: Bash CheatSheet for Mac OSX
# 
# A little overlook of the Bash basics
#
# Usage:
#
# Author: J. Le Coupanec
# Date: 2014/11/04

ysv

h = {
  'a' => '1',
  'e' => '2',
  'i' => '3',
  'o' => '4',
  'u' => '5'
}

"hello world".gsub(/[aeiou]/, h)
# => "h2ll4 w4rld"

ysv

#!/bin/bash

set -xe

function fetchblk () {
  blk=$(echo "obase=16; $1" | bc)
  data=$(printf '{"jsonrpc":"2.0","method":"eth_getBlockByNumber","params":["0x%s", true],"id":1}' $blk)
  curl -X POST -H "Content-Type: application/json" --data "$data" http://127.0.0.1:8545/ | jq '.'
}

ysv

const deployedAddress = "0x9Bc14c55139501643B62d49c9E8dEF17029Ad418";
const amountToClaim = 100000000; // 1 TRST

const abi = 
[{"constant":false,"inputs":[],"name":"reclaimTokens","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"maxAllowanceInclusive","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_maxAllowanceInclusive","type":"uint256"}],"name":"setMaxAllowance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"erc20Contract","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"claimedTokens","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"isPaused","type":"bool"

ysv

new_precision = 8
markets=[]

Market.find_each do |m|
  markets << m.as_json.slice("bid_unit", "ask_unit", "bid_fee", "ask_fee", "enabled", "position")
  m.delete
end

markets.each do |m|
  Market.create!(m.merge(ask_precision: new_precision, bid_precision: new_precision))

ysv

verify_options = {
  verify_expiration: true,
  verify_not_before: true,
  iss: ENV["JWT_ISSUER"],
  verify_iss: !ENV["JWT_ISSUER"].nil?,
  verify_iat: true,
  verify_jti: true,
  aud: ENV["JWT_AUDIENCE"].to_s.split(",").reject(&:empty?),
  verify_aud: !ENV["JWT_AUDIENCE"].nil?,
  sub: "session",

ysv

# From barong container to get JWT_PUBLIC_KEY.
OpenSSL::PKey.read(Base64.urlsafe_decode64(Rails.application.secrets.jwt_shared_secret_key)).public_key.to_pem.yield_self {|pub| Base64.urlsafe_encode64(pub)}

ysv

def get_balances_for(member)
  Currency.find_each.map do |c|
    
    operations_main_balance = member.balance_for(currency: c, kind: :main)
    operations_locked_balance = member.balance_for(currency: c, kind: :locked)
    
    legacy_main_balance = member.legacy_balance_for(currency: c, kind: :main)
    legacy_locked_balance = member.legacy_balance_for(currency: c, kind: :locked)
    
    valid = operations_main_balance == legacy_main_balance && operations_locked_balance == legacy_locked_balance

ysv

deposits = [
  { member_id: 1, currency_id: :usd, amount: 1000 },
  { member_id: 1, currency_id: :eur, amount: 2000 },
  { member_id: 2, currency_id: :usd, amount: 100 },
  { member_id: 2, currency_id: :eur, amount: 200 }
]

deposits.map do |d|
  Deposits::Fiat.create!(d).tap(&:accept!)
end

ysv

BITFINEX

wscat -c wss://api.bitfinex.com/ws/2

{ "event": "subscribe", "channel": "candles", "key": "trade:1m:tBTCUSD" }

BINANCE

wscat -c 'wss://stream.binance.com:9443/stream?streams=adabtc@kline_1m'