oscarzhao

第一周：设计和实现一个不含指针的class（Geekband)

设计class的注意事项

1. 数据要封装（尽量private)
2. 参数和返回值尽量用reference（返回local variable除外）
3. 能用const一定要用const
4. 构造函数尽量用initializer_list进行参数初始化

临时对象

临时对象是指在函数作用域或块作用域内定义的变量。

oscarzhao

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

1. Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }

oscarzhao

//go:build amd64 && linux

package fdsetutil

import "syscall"

/**
// filepath: ztypes_linux_amd64.go
type FdSet struct {
	Bits [16]int64

oscarzhao

package main

import (
	"fmt"
	"log"
	"net"
	"os"
	"os/signal"
	"syscall"
)