1.环境配置
- gopath设置：我的设置为C:\Users\livingbody\goworkspace
- mod初始化 在定义的mymath的目录下执行 go install mymath
- 设置GO111MODULE为 auto ，go env -w GO111MODULE=auto
set gopath=C:\Users\livingbody\goworkspace go mod init go install mymath go env -w GO111MODULE=auto
2.目录设置
顾名思义，声明函数的框架，例如输入输出等，看例子可秒懂。
└─mymath go.mod sqrt.go
3.文件编写
sqrt.go
package mymath func Sqrt(x float64) float64 { z := 0.0 for i := 0; i < 1000; i++ { z -= (z*z - x) / (x * 2) } return z }
执行go install mymath ，安装mymath自定义库，编写入口 main.go
package main import ( "fmt" "mymath" ) func main() { fmt.Printf("Hello, world. Sqrt(2)=%v\n", mymath.Sqrt(2)) }
输出
Starting: C:\Users\livingbody\go\bin\dlv.exe dap --check-go-version=false --listen=127.0.0.1:12240 from c:\Users\livingbody\goworkspace DAP server listening at: 127.0.0.1:12240 Type 'dlv help' for list of commands. Hello, world. Sqrt(2)=1.414213562373095 Process 17472 has exited with status 0 Detaching dlv dap (13800) exited with code: 0
