goFiber http function

In PHP development, the Fiber library of the Go language is a powerful tool that provides fast, high-performance HTTP processing functions. By using the http functions in the Fiber library, developers can easily build efficient web applications. This function has simple yet powerful features and can handle tasks such as routing, middleware, requests and responses. Whether you are building a RESTful API or developing a website, using Go Fiber http functions can greatly improve performance and efficiency. In this article, PHP editor Banana will introduce how to use the Go Fiber http function and some precautions to help developers make better use of this powerful tool.

Question content

On the homepage of "go fiber.io" they show this code

package main

import (
    "log"

    "github.com/gofiber/fiber/v2"
)

func main() {
    app := fiber.New()

    app.Get("/", func (c *fiber.Ctx) error {
        return c.SendString("Hello, World!")
    })

    log.Fatal(app.Listen(":3000"))
}

In the code, the function inside the second parameter of the "get" function indicates that it returns an error, but returns c.sendstring("hello, world!"). What don't I understand about this so that you could say you are returning an error but you are returning something else?

I admit that I am new to golang and even new to go fiber, so please help me understand this better.

Solution

Return the result error from sendstring (nil, if there is no error)

Please refer to //m.sbmmt.com/link/424f7ef1be195c6efc2a19439b152a81

The signature is:

func (c *Ctx) SendString(body string) error

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