Golang read file by line

This is a created article in which the information may have evolved or changed.

Golang's error handling is a bit strange.

When inserting code, an error occurred using the Insert code (recommended): The DNS address of the server could not be resolved.

Using the Insert code, the text is inserted directly, without even coloring.

Insert picture to address, cannot upload.

To download the client, go to Microsoft's website when it is already: We can ' t find that page.

Writing a blog is so hard to be disappointed.

Package Jutilimport ("Bufio" "IO" "OS" "Strings") Func ReadLine (FileName string, handler func (string)) error {F, err: = OS. Open (fileName) if err! = Nil {return Err}buf: = Bufio. Newreader (f) for {line, err: = buf. ReadString (' \ n ') line = strings. Trimspace (line) handler (line) if err! = Nil {if Err = = Io. EOF {return Nil}return Err}}return nil}