jingzhehu

#include <iostream>

int main() {

  // _1 type _2 * _3
  // when const is in location _1 or_2, it means the type is const-qualified
  // when const is in location _3, it means the ptr is const-qualified
  // const_cast can modify the const-qualification of variable
  // don't use const_cast unless you have to

jingzhehu

//
// Created by Jingzhe Hu on 6/12/2018 Tuesday.
//
#include <string>
#include <algorithm>
#include <vector>
#include <iostream>

using namespace std;

jingzhehu

#include <iostream>

using namespace std;

struct Foo {
  void display_greetings() { cout << "Class Foo - greetings !" << endl; }
  void display_number(int i) { cout << "Class Foo - the integer is: " << i << endl; }
  int data = 7;
  static const int static_data = 90;
};

jingzhehu

#include <iostream>

template<typename T>
struct inequality {
  bool operator!=(const T& that) {
    return !(static_cast<const T&>(*this) == that);
  }
};

// mutual dependence of inequality and point

jingzhehu

# Add to the beginning of CMakeLists.txt
# JH edit

set(OPENSSL_ROOT_DIR "/usr/local/opt/openssl")
set(OPENSSL_LIBRARIES "/usr/local/opt/openssl/lib")
set(BINARYEN_ROOT "/usr/local/binaryen/")
set(BINARYEN_BIN "/usr/local/binaryen/bin/")
set(WASM_LLVM_CONFIG "/usr/local/wasm/bin/llvm-config")

jingzhehu

package main

import (
	"fmt"
)

func Sqrt(x float64) (float64, error) {

	if x < 0 {
		return 0, &ErrNegativeSqrt{x}

jingzhehu

package main

import "fmt"

type IPAddr [4]byte

// TODO: Add a "String() string" method to IPAddr.
func (ip IPAddr) String() string {
	return fmt.Sprintf("%v.%v.%v.%v", ip[0], ip[1], ip[2], ip[3])	
}

jingzhehu

package main

import "fmt"

// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
	a := 1
	b := 1
	c := 0

jingzhehu

package main

import (
	"fmt"
	"math"
)

func Sqrt(x float64) float64 {
	z := float64(1)

jingzhehu

package main

import "golang.org/x/tour/pic"

func Pic(dx, dy int) [][]uint8 {
	pic := make([][]uint8, dy)

	for x := range pic {
		pic[x] = make([]uint8, dx)
		for y := range pic[x] {