Go Struct

Go lets you create your own data type using structs. If you're coming from TypeScript, you can think of it like an interface where you declare your fields and specify each type.

type User struct {    name string    age int}

To access values, use dot notation. Here's an example to use it:

// variable user1 is now a type Useruser1 := User{    name: "Scott",    age: 23,}// Display the values:fmt.Println("Name", user1.name)fmt.Println("Age", user1.age)

Here are some gotchas:

type bob struct {        name string        age  int}type annie struct {        name string        age  int}var b bobvar a annieb = a // <- cannot use a (variable of type annie) as bob value in assignment

Although the bob and annie structs have the same fields, assigning the variable b with a won't work because Go doesn't do implicit conversion .

You CAN assign a to b though, using explicit conversion

b = bob(a)

What do you think will happen in the code below? Will the compiler complain?

user2 := struct {        name string        age  int}{        name: "Ishin",        age:  72,}b = user2a = user2

Surprisingly, the code above works. Why this works and not the previous one? It's because variable a was a named type and variable user2 is a literal type.

Key Takeaways:

• Structs lets you create your own data type
• Use explicit conversion to assign values with same memory footprint