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Commit 993a07e

Browse files
author
Rajeev Kumar Singh
committed
Go Structs and Code cleanup
1 parent d7a6a38 commit 993a07e

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12 files changed

+54
-17
lines changed

12 files changed

+54
-17
lines changed
Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,11 @@
1+
package main
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3+
import "fmt"
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5+
func main() {
6+
// You can create a pointer using the built-in new() function
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ptr := new(int) // Pointer to an int
8+
*ptr = 100
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10+
fmt.Printf("Ptr = %#x, Ptr value = %d\n", ptr, *ptr)
11+
}

‎10-structs/01-struct-declaration-initialization/main.go

Lines changed: 8 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -12,21 +12,23 @@ type Person struct {
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}
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func main() {
15-
// Creating an instance of the 'person' struct type
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// Declaring a variable of a `struct` type
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var p Person // // All the struct fields are initialized with their zero value
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fmt.Println(p)
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// Declaring and initializing a struct using a struct literal
1620
p1 := Person{"Rajeev", "Singh", 26}
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fmt.Println("Person1: ", p1)
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19-
// Naming fields while initializing the struct
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// Naming fields while initializing a struct
2024
p2 := Person{
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firstName: "John",
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lastName: "Snow",
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age: 45,
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}
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fmt.Println("Person2: ", p2)
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27-
// Uninitialized fields are assigned their zero-value
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p3 := Person{
29-
firstName: "Robert",
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}
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// Uninitialized fields are set to their corresponding zero-value
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p3 := Person{firstName: "Robert"}
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fmt.Println("Person3: ", p3)
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}

‎10-structs/02-struct-access-fields/main.go

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -17,7 +17,7 @@ func main() {
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weightInKg: 1920,
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}
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// Accessing struct fields using dot notation
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// Accessing struct fields using the dot operator
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fmt.Println("Car name: ", c.name)
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fmt.Println("Car color: ", c.color)
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‎10-structs/03-pointer-to-struct/main.go

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -13,7 +13,7 @@ func main() {
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// instance of student struct type
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s := Student{11, "Jack"}
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16-
// Pointer to a student struct
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// Pointer to the student struct
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ps := &s
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fmt.Println(ps)
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Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
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package main
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import "fmt"
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type Employee struct {
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id int
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name string
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}
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func main() {
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// You can also get a pointer to a struct using the built-in new() function
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// It allocates enough memory to fit a value of the given struct type, and returns a pointer to it
13+
pEmp := new(Employee)
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pEmp.id = 1000
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pEmp.name = "Sachin"
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fmt.Println(pEmp)
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}

‎10-structs/04-nested-struct/main.go renamed to ‎10-structs/05-nested-struct/main.go

Lines changed: 11 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -16,14 +16,17 @@ type Customer struct {
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}
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func main() {
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c := Customer{name: "Rajeev Singh", age: 25}
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c.address = Address{
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houseNo: "747",
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street: "Golf View Road",
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city: "Seattle",
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state: "Washington",
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country: "United States",
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zipCode: 98101,
19+
c := Customer{
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name: "Rajeev Singh",
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age: 25,
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address: Address{
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houseNo: "747",
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street: "Golf View Road",
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city: "Seattle",
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state: "Washington",
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country: "United States",
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zipCode: 98101,
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},
2730
}
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fmt.Println("Customer: ", c)

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