为什么在调用函数时使用`go`关键字？

I was going through an example of a TCP server. They defined a function and called it with:

go handleRequest(conn)

I thought it was weird seeing the go keyword, so I tried it without:

handleRequest(conn)

To my surprise, this worked!

• If both work the same way, why use the go keyword at all?
• If they work differently, what is the difference?
• Is there a certain style guideline to use, or should you just use personal preference?

go starts a goroutine, which is managed by golang run-time.

It can either run on the current OS thread, or it can run on a different OS thread automatically.

You can refer to basic golang documents for this, for example, one item in Google search keyword goroutine is golang concurrency.

When you use the Go keyword before a func ure making that func run into a goRoutine, is like a Java Thread, and is the go way for concurrency, more info here. Good Luck