Move code to /concepts

Author: mfbmina

README.md

@@ -33,11 +33,4 @@ With that in mind, Golang is a language with fewer abstractions when comparing t
 
 I believe to get a good understanding, you can follow this order:
 
-- [Constants & variables](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/constants_and_variables.go)
-- [Stdin & stdout](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/stdin_stdout.go)
-- [Arrays](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/array.go)
-- [Conditional statements](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/conditional_statements.go)
-- [Loops](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/loops.go)
-- [Pointers](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/pointers.go)
-- [Structs](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/structs.go)
-- [Functions](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/functions.go)
+- [Concepts](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts)

concepts/README.md

@@ -0,0 +1,14 @@
+# Golang basic concepts
+
+These are the basics of Golang
+
+I believe to get a good understanding, you can follow this order:
+
+- [Constants & variables](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/constants_and_variables.go)
+- [Stdin & stdout](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/stdin_stdout.go)
+- [Arrays](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/array.go)
+- [Conditional statements](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/conditional_statements.go)
+- [Loops](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/loops.go)
+- [Pointers](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/pointers.go)
+- [Structs](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/structs.go)
+- [Functions](https://github.com/mfbmina/data-structures-algorithms-go/blob/main/concepts/functions.go)

array.go renamed to concepts/array.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -13,7 +13,7 @@ import "fmt"
 // - SIZE: how many elements that array will store.
 // - TYPE: any of default types in Go or structs that you've created.
 // - DEFAULT_VALUES: this is optional but it is used when you want to create an array with default values on it.
-func main() {
+func Arrays() {
 	var words [2]string // declaring an array called words with 2 elements.
 	words[0] = "Hello"  // assign the word "Hello" to the first element into the array
 	words[1] = "World"  // assign the word "World" to the second element into the array

conditional_statements.go renamed to concepts/conditional_statements.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -20,7 +20,7 @@ import "fmt"
 // - `!X`: `!` is the operator `NOT`. It negates the value of the expression. If the expression is already false, it becomes true. `!false == true`.
 //
 // In Golang we have two ways of doing conditional statements: `if/else` and `switch/case`.
-func main() {
+func ConditionalStatements() {
 	var age int
 	var country string
 	fmt.Println("How old are you?")

constants_and_variables.go renamed to concepts/constants_and_variables.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -34,7 +34,7 @@ import "fmt"
 
 const hello = "Hello, World." // Defining a constant
 
-func main() {
+func ConstantsAndVariables() {
 	var number int                  // Declaring an integer variable
 	number = 10                     // Assign 10 to this variable
 	fmt.Println("Number =", number) // Printing number to the screen

functions.go renamed to concepts/functions.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -20,7 +20,7 @@ import "fmt"
 //
 // To run a Go code, we always define a function called main, which will be executed when you call:
 // $ go run file.go
-func main() {
+func Functions() {
 	// This is how a function can be called.
 	hi()
 

loops.go renamed to concepts/loops.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -9,7 +9,7 @@ import "fmt"
 // 1. While loops (which sometimes can be infinite loops)
 // 2. For loops
 // 3. Range loops
-func main() {
+func Loops() {
 	array := []int{1, 2, 3, 4, 5}
 
 	// While loops are used to do some actions while the condition is true.

pointers.go renamed to concepts/pointers.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -8,12 +8,11 @@ import "fmt"
 // The type *T is a pointer to a T value. Its zero value is nil.
 // Unlike C, Go has no pointer arithmetic.
 
-type Rectangle struct {
+type Square struct {
 	lenght int
-	width  int
 }
 
-func main() {
+func Pointers() {
 	// Defining a pointer p.
 	var p *int
 	i := 42
@@ -30,11 +29,11 @@ func main() {
 	*p = 21
 	fmt.Println("New value at i through p", *p)
 
-	r := Rectangle{1, 2}
+	r := Square{1}
 	// Defining a pointer for r
 	r_pointer := &r
 
 	// If you have a pointer for a struct, you can call its attributes in the same way if it was not a pointer.
-	area := r_pointer.lenght * r_pointer.width
+	area := r_pointer.lenght * r_pointer.lenght
 	fmt.Println("rectangle area's:", area)
 }

stdin_stdout.go renamed to concepts/stdin_stdout.go

@@ -1,11 +1,11 @@
-package main
+package concepts
 
 import "fmt"
 
 // Sometimes we need to get or send information from the users.
 // In basic programs like ours, we do that by reading information from the terminal and printing it back there.
 // This is what we call "reading from the `stdin`" and "printing to the `stdout`"
-func main() {
+func StdinAndStdout() {
 	var name string
 
 	// We are printing a question to the stdout

structs.go renamed to concepts/structs.go

@@ -1,4 +1,4 @@
-package main
+package concepts
 
 import "fmt"
 
@@ -17,7 +17,7 @@ type Rectangle struct {
 	width  int
 }
 
-func main() {
+func Structs() {
 	var rectangle_1 Rectangle // Declaring a struct without any default value.
 	fmt.Println(rectangle_1)
 

data-structures-algorithms-go

@@ -0,0 +1,18 @@
+package main
+
+import "github.com/mfbmina/data-structures-algorithms-go/concepts"
+
+func main() {
+	// conceptsExamples()
+}
+
+func conceptsExamples() {
+	concepts.ConstantsAndVariables()
+	concepts.StdinAndStdout()
+	concepts.Arrays()
+	concepts.ConditionalStatements()
+	concepts.Loops()
+	concepts.Pointers()
+	concepts.Structs()
+	concepts.Functions()
+}