Go Language Practice Tips (2)--package definition and initialization

This is a creation in Article, where the information may have evolved or changed.

(1) All files under one folder must belong to the same one package , and a good rule is the same as the package folder name. Also, be aware that the import statement specifies the package path name, not the one you are looking for package . For discussion on this topic, see is the package name must same with name folder name?.

In addition, import the syntax to note (see here):

import packagename importpath

Examples are as follows:

Import declaration          Local name of Sinimport   "lib/math"         math.Sinimport m "lib/math"         m.Sinimport . "lib/math"         Sin

In the second case, m it is the package name; in the third case, the use math package can omit the package name.

(2)

import"github.com/xxx")

This ensures that the github.com/xxx initialization of "" is package done ( package all functions in this one init ), even if this is not explicitly used in the current file package .