MajdT51

uint256 currentBalance;

function pay(uint256 amount) public {
  require(amount > 0, "amount is not bigger than zero");
  uint256 currentBalance  = 10;
  currentBalance  = currentBalance.add(amount);
}

MajdT51

/*
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/

pragma solidity >=0.4.25 <0.6.0;

MajdT51

pragma solidity >= 0.4.25 < 0.6.0;

library SafeMath {

  struct Balance { uint256 _balance; }

  function add(Num storage self, uint256 amount) public {
    uint256 newBalance = self._ balance + amount;
    require(newBalance >= self._ balance, "addition overflow");
    self._ balance = newBalance;

MajdT51

pragma solidity >= 0.4.25 < 0.6.0;

library SafeMath {

  function add(uint256 a, uint256 b) public pure returns (uint256){
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");
    return c;
  }

MajdT51

pragma solidity >= 0.4.25 < 0.6.0;

import '../node_modules/openzeppelin solidity/contracts/ownership/Ownable.sol';
import '../node_modules/openzeppelin-solidity/contracts/math/SafeMath.sol';
import './AddrArrayLib.sol';

contract TokenContract is Ownable {
  using AddrArrayLib for AddrArrayLib.Addresses;
  using SafeMath for uint256;
  

MajdT51

x-quorum-def:
  &quorum-def
  restart: "on-failure"
  image: "${QUORUM_DOCKER_IMAGE:-quorumengineering/quorum:2.3.0}"
  expose:
    - "21000"
    - "50400"
  healthcheck:
    test: ["CMD", "wget", "--spider", "--proxy", "off", "http://localhost:8545"]
    interval: 4s

MajdT51

services:
  node1:
    << : *quorum-def
    hostname: node1
    ports:
      - "22000:8545"
    volumes:
      - vol1:/qdata
      - ./3nodes:/3nodes:ro
    environment:

MajdT51

# QUORUM_DOCKER_IMAGE: default to quorumengineering/quorum:2.3.0
# To use Remix, set QUORUM_GETH_ARGS="--rpccorsdomain https://remix.ethereum.org"
version: "3.6"
x-quorum-def:
  &quorum-def
  restart: "on-failure"
  image: "${QUORUM_DOCKER_IMAGE:-quorumengineering/quorum:2.3.0}"
  expose:
    - "21000"
    - "50400"

MajdT51

# use the 'node' official image
FROM node:8.16.2-alpine3.9

# expose ports 7545, 7546, 7547
EXPOSE 7545 
EXPOSE 7546
EXPOSE 7547
  
# use alpine package manager to install git
RUN apk add --no-cache git

MajdT51

  proxy:
    restart: "on-failure"
    build:
      context: .
    ports:
      - "22003:7545"
      - "22004:7546"
      - "22005:7547"
    networks:
      quorum-simple-net: