End of day 2

.idea/LearningGo.iml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module version="4">
+  <component name="Go" enabled="true" />
+</module>

.idea/modules.xml

@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/restapi.iml" filepath="$PROJECT_DIR$/.idea/restapi.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/LearningGo.iml" filepath="$PROJECT_DIR$/.idea/LearningGo.iml" />
     </modules>
   </component>
 </project>

.idea/restapi.iml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="WEB_MODULE" version="4">
-  <component name="Go" enabled="true" />
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>

dayone.go

@@ -0,0 +1,100 @@
+package main
+
+import "fmt"
+
+var globalVariable = "this is a global variable"
+
+func printingExamples() {
+	age := 69
+	name := "Joe"
+
+	//Print
+	fmt.Print("hello, ")   // does NOT add a new line
+	fmt.Print("world! \n") // add new line manually
+	fmt.Print("new line \n")
+
+	//Println
+	fmt.Println("Hello on one line!") // automatically adds new line
+	fmt.Println("Good bye on one line!")
+
+	//Passing multiple values
+	fmt.Println("My age is", age, "and my name is", name)
+
+	//Printf (formatted strings) %_ = format specifier - List of specifiers https://pkg.go.dev/fmt
+	// Does NOT add a new line like fmt.Print()
+	fmt.Printf("my age is %v and my name is %v \n", age, name) // %v takes any type of variables in the order they are provided
+	fmt.Printf("My age is %q and my name is %q \n", age, name) // %q adds quotes around the variables in the order they are provided, must be strings!
+	fmt.Printf("age is of type %T \n", age)                    // %T gets the type of the first variable passed after string to be printed
+	fmt.Printf("You scored %f points! \n", 225.55)             // %f passes a float value passed
+	fmt.Printf("You scored %0.1f points! \n", 225.55)          // %X.Xf rounds the passed float to the specified length
+
+	// Sprintf (saved formatted strings)
+	var sprintfVar = fmt.Sprintf("My age is %v and my name is %v \n", age, name)
+	fmt.Println("The saved string is:", sprintfVar)
+}
+
+func dataTypesExamples() {
+
+	// Date Types Doc https://go.dev/ref/spec#Types
+
+	fmt.Println("-------------------------STRINGS-------------------------")
+	// String docs https://go.dev/ref/spec#String_types
+
+	// Three ways to initialize a variable
+	var nameOne string = "mario"
+	var nameTwo = "luigi"
+	var nameThree string
+
+	fmt.Println(nameOne)
+	fmt.Println(nameTwo)
+	fmt.Println(nameThree)
+	fmt.Println("All three: ", nameOne, nameTwo, nameThree)
+
+	nameOne = "peach"
+	nameThree = "bowser"
+	fmt.Println(nameOne, nameTwo)
+
+	// Shorthand for variable initialization
+	nameFour := "yoshi"
+	fmt.Println(nameFour)
+
+	// Numeric data types doc https://go.dev/ref/spec#Numeric_types
+
+	fmt.Println("-------------------------INTS-------------------------")
+
+	// ints
+	var ageOne int = 20
+	var ageTwo = 30
+	ageThree := 40
+
+	fmt.Println(ageOne, ageTwo, ageThree)
+
+	// bits & memory
+
+	// signed (positive and negative)
+	var numOne int8 = 25           // -128 to 127
+	var numTwo int16 = 35          // -32768 to 32767 (-32,768 to 32,767)
+	var numThree int32 = 45        // -2147483648 to 2147483647 (-2,147,483,648 to 2,147,483,647)
+	var numThreeAndAHalf rune = 45 // rune is the same as int32
+	var numFour int64 = 55         // -9223372036854775808 to 9223372036854775807 (-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807)
+
+	fmt.Println(numOne, numTwo, numThree, numThreeAndAHalf, numFour)
+
+	// unsigned (all positive)
+	var posNumOne uint8 = 65    // 0 to 255
+	var posNumTwo uint16 = 75   // 0 to 65535 (65,535)
+	var posNumThree uint32 = 85 // 0 to 4294967295 (4,294,967,295)
+	var posNumFour uint64 = 95  // 0 to 18446744073709551615 (18,446,744,073,709,551,615)
+
+	fmt.Println(posNumOne, posNumTwo, posNumThree, posNumFour)
+
+	fmt.Println("-------------------------FLOATS-------------------------")
+
+	// decimal values default to float64
+	var floatOne float32 = 25.98
+	var floatTwo float64 = 9843216984654.68432168454651968
+	floatThree := 6854324.6854654
+
+	fmt.Println(floatOne, floatTwo, floatThree)
+
+}

go.mod

@@ -1,3 +1,3 @@
-module git.nevets.tech/Steven/gorestapi
+module git.nevets.tech/Steven/LearningGo
 
 go 1.19

goofin.go

@@ -0,0 +1,10 @@
+package main
+
+func divider(divider string) {
+	endString := ""
+	totalLength := 50
+	length := len(divider)
+
+	//TODO make this return a fixed size divider!
+
+}

main.go

@@ -1,106 +1,74 @@
 package main
 
-import "fmt"
+import (
-
+	"fmt"
-var globalVariable = "this is a global variable"
+	"sort"
+	"strings"
+)
 
 func main() {
-	dataTypesExamples()
 
-	printingExamples()
+	fmt.Println("-------------------------ARRAYS-------------------------")
-}
 
-func printingExamples() {
+	// Arrays in GOLang start at 0!!!
-	age := 69
-	name := "Joe"
 
-	//Print
+	// Three ways to initialize arrays
-	fmt.Print("hello, ")   // does NOT add a new line
+	// you can either define the length in the [x]type part
-	fmt.Print("world! \n") // add new line manually
+	// or let it determine the amount based on the number of entries given
-	fmt.Print("new line \n")
+	var ages [3]int = [3]int{16, 17, 18}
+	var moreAges = [3]int{21, 22, 23}
+	names := [4]string{"mario", "luigi", "peach", "yoshi"}
 
-	//Println
+	fmt.Println(ages, len(moreAges), names) // len() function gets the length or size of array
-	fmt.Println("Hello on one line!") // automatically adds new line
-	fmt.Println("Good bye on one line!")
 
-	//Passing multiple values
+	// slices (use arrays under the hood)
-	fmt.Println("My age is", age, "and my name is", name)
+	var scores = []int{100, 50, 60}
+	scores[2] = 25
+	scores = append(scores, 85)
 
-	//Printf (formatted strings) %_ = format specifier - List of specifiers https://pkg.go.dev/fmt
+	fmt.Println(scores, len(scores))
-	// Does NOT add a new line like fmt.Print()
-	fmt.Printf("my age is %v and my name is %v \n", age, name) // %v takes any type of variables in the order they are provided
-	fmt.Printf("My age is %q and my name is %q \n", age, name) // %q adds quotes around the variables in the order they are provided, must be strings!
-	fmt.Printf("age is of type %T \n", age)                    // %T gets the type of the first variable passed after string to be printed
-	fmt.Printf("You scored %f points! \n", 225.55)             // %f passes a float value passed
-	fmt.Printf("You scored %0.1f points! \n", 225.55)          // %X.Xf rounds the passed float to the specified length
 
-	// Sprintf (saved formatted strings)
+	// slice ranges
-	var sprintfVar = fmt.Sprintf("My age is %v and my name is %v \n", age, name)
+	rangeOne := names[1:3]
-	fmt.Println("The saved string is:", sprintfVar)
-}
 
-func dataTypesExamples() {
+	fmt.Println(rangeOne)
 
-	// Date Types Doc https://go.dev/ref/spec#Types
+	fmt.Println("-------------------------STANDARD-LIBRARY-------------------------")
 
-	fmt.Println("-------------------------STRINGS-------------------------")
+	// strings package
-	// String docs https://go.dev/ref/spec#String_types
 
-	// Three ways to initialize a variable
+	greeting := "hello there"
-	var nameOne string = "mario"
+	fmt.Println(strings.Contains(greeting, "hello")) // strings.Contains returns a boolean value depending on if the passed value contains the second string
-	var nameTwo = "luigi"
+	fmt.Println(strings.Contains(greeting, "Hello")) // This function IS case-sensitive
-	var nameThree string
 
-	fmt.Println(nameOne)
+	fmt.Println(strings.ReplaceAll(greeting, "hello", "hi")) // Replaces all instances of the passed string
-	fmt.Println(nameTwo)
+	fmt.Println("Original string value is", greeting)        // the original value is unchanged
-	fmt.Println(nameThree)
+	fmt.Println(strings.ToUpper(greeting))                   // returns the passed string all uppercase
-	fmt.Println("All three: ", nameOne, nameTwo, nameThree)
 
-	nameOne = "peach"
+	fmt.Println(strings.Index(greeting, "ll")) // returns the first found position of the passed string
-	nameThree = "bowser"
-	fmt.Println(nameOne, nameTwo)
 
-	// Shorthand for variable initialization
+	fmt.Println(strings.Split(greeting, " ")) // splits first passed string into an array at each of the second passed variables instances
-	nameFour := "yoshi"
-	fmt.Println(nameFour)
 
-	// Numeric data types doc https://go.dev/ref/spec#Numeric_types
+	// sort package
 
-	fmt.Println("-------------------------INTS-------------------------")
+	otherAges := []int{45, 20, 35, 30, 75, 60, 50, 25}
 
-	// ints
+	sort.Ints(otherAges) // sorts given values AND stores it in the same variable
-	var ageOne int = 20
+	fmt.Println(otherAges)
-	var ageTwo = 30
-	ageThree := 40
 
-	fmt.Println(ageOne, ageTwo, ageThree)
+	index := sort.SearchInts(otherAges, 30) // gets the index of the passed value from the array first passed
+	secondIndex := sort.SearchInts(otherAges, 90) // if the value passed is not found in the array, it will return what position it WOULD be in
+	thirdIndex := sort.SearchInts(otherAges, 55)
+	fmt.Println(index)
+	fmt.Println(secondIndex)
+	fmt.Println(thirdIndex)
 
-	// bits & memory
+	otherNames := []string{"mario", "luigi", "yoshi", "peach", "bowser"}
 
-	// signed (positive and negative)
+	sort.Strings(otherNames)
-	var numOne int8 = 25           // -128 to 127
+	fmt.Println(otherNames)
-	var numTwo int16 = 35          // -32768 to 32767 (-32,768 to 32,767)
-	var numThree int32 = 45        // -2147483648 to 2147483647 (-2,147,483,648 to 2,147,483,647)
-	var numThreeAndAHalf rune = 45 // rune is the same as int32
-	var numFour int64 = 55         // -9223372036854775808 to 9223372036854775807 (-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807)
 
-	fmt.Println(numOne, numTwo, numThree, numThreeAndAHalf, numFour)
+	fmt.Println(sort.SearchStrings(otherNames, "bowser")) // gives the position of the passed string in the array if found
-
+	fmt.Println(sort.SearchStrings(otherNames, "waluigi")) // otherwise will return where it WOULD be
-	// unsigned (all positive)
-	var posNumOne uint8 = 65    // 0 to 255
-	var posNumTwo uint16 = 75   // 0 to 65535 (65,535)
-	var posNumThree uint32 = 85 // 0 to 4294967295 (4,294,967,295)
-	var posNumFour uint64 = 95  // 0 to 18446744073709551615 (18,446,744,073,709,551,615)
-
-	fmt.Println(posNumOne, posNumTwo, posNumThree, posNumFour)
-
-	fmt.Println("-------------------------FLOATS-------------------------")
-
-	// decimal values default to float64
-	var floatOne float32 = 25.98
-	var floatTwo float64 = 9843216984654.68432168454651968
-	floatThree := 6854324.6854654
-
-	fmt.Println(floatOne, floatTwo, floatThree)
 
 }