This is a creation in Article, where the information may have evolved or changed. A struct is a series of fields that contain names and types. Usually like this: "' Gopackage mainimport" fmt "type person struct {name Stringage int32}func main () {person: = Person{name:" Michał ", Age:29}fmt. PRINTLN (person)//{michał29}} "(In the next part of this post, I will progressively remove the package name, import, and definition of the main function) in the struct above, each with a clear name. The Go language also allows you to specify no field names. Fields that do not have a name are called anonymous fields or inline fields. The name of the type (if there is a package name, the package name that does not contain the prefix) is the name of the field. Because the struct requires at least one unique field name, we cannot do this: "Goimport (" net/http ") type request Struct{}type T struct {http. Request/Field name is "request" request//Field name is "request"} "if compiled, the compiler will throw an error:" ' > Go install Github.com/mlowic ki/sandbox# github.com/mlowicki/sandboxsrc/github.com/mlowicki/sandbox/sandbox.go:34:duplicate Field Request " With an anonymous field or method, you can access it in a concise way: ' gotype person struct {name Stringage int32}func (P-person) Isadult () bool {return p.age >= 18}type Employee struct {position String}func (E employee) Ismanager () bool {return e.position = = "Manager"}type Record s truct {personemployee}...record: = Record{}record.name = "Michał" Record.age = 29record.position = "Software Engineer" FMT. PRINTLN (record)//{{michał29} {software engineer}}fmt. PRINTLN (Record.name)//MICHAŁFMT.PRINTLN (Record.age)//29FMT. PRINTLN (record.position)//software engineerfmt. Println (record. Isadult ())//TRUEFMT. Println (record. Ismanager ())//False ' anonymous ' (embedded) fields and methods are automatically raised (to find the corresponding object) when called. They behave like regular fields, but cannot be used in struct literals: ' ' Go//record: = Record{}record: = record{name: ' Michał ', ' age:29} ', which causes the compiler to throw an error: ' '//src/ Github.com/mlowicki/sandbox/sandbox.go:23:unknown Record field ' name ' in struct literal//src/github.com/mlowicki/ Sandbox/sandbox.go:23:unknown Record field ' age ' in struct literal ' can achieve our purpose by creating a clear, complete, embedded structure: ' ' gorecord{ Person{name: "Michał", age:29}, Employee{position: "Software Engineer"}} "[Source:] (https://golang.org/ref/spec#Struct _types)! [] (https://raw.githubusercontent.com/studygolang/gctt-images/master/promoted-fields-and-methods/ promoted-fields-and-methods-in-go-1.jpg)
Via:https://medium.com/golangspec/promoted-fields-and-methods-in-go-4e8d7aefb3e3
Author: Michałłowicki Translator: gogeof proofreading: polaris1119
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