add: first array examples

14-arrays/01-whats-an-array/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/02-examples-1-hipsters-love-bookstore/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 // STORY:

14-arrays/03-examples-2-hipsters-love-bookstore/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/04-array-literal/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"
@@ -19,6 +26,7 @@ const (
 func main() {
 	// ALTERNATIVE:
 	// Use this only when you don't know about the elements beforehand
+	//
 	// var books [yearly]string
 
 	books := [yearly]string{
@@ -28,30 +36,4 @@ func main() {
 		"Kafka's Revenge 2nd Edition",
 	}
 	fmt.Printf("books  : %#v\n", books)
-
-	// var (
-	// 	wBooks [winter]string
-	// 	sBooks [summer]string
-	// )
-
-	// wBooks[0] = books[0]
-
-	// for i := range sBooks {
-	// 	sBooks[i] = books[i+1]
-	// }
-
-	// fmt.Printf("\nwinter : %#v\n", wBooks)
-	// fmt.Printf("\nsummer : %#v\n", sBooks)
-
-	// var published [len(books)]bool
-
-	// published[0] = true
-	// published[len(books)-1] = true
-
-	// fmt.Println("\nPublished Books:")
-	// for i, ok := range published {
-	// 	if ok {
-	// 		fmt.Printf("+ %s\n", books[i])
-	// 	}
-	// }
 }

14-arrays/05-compare/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/06-compare-unnamed/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/07-assignment/main.go

@@ -0,0 +1,31 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	prev := [3]string{"Kafka's Revenge", "Stay Golden", "Everythingship"}
+
+	// You can't do this:
+	// books = prev
+
+	var books [4]string
+
+	for i, b := range prev {
+		books[i] += b + " 2nd Ed."
+	}
+
+	// copying arrays using slices
+	// copy(books[:], prev[:])
+
+	books[3] = "Awesomeness"
+
+	fmt.Printf("last year:\n%#v\n", prev)
+	fmt.Printf("\nthis year:\n%#v\n", books)
+}

14-arrays/08-multi-dimensional/main.go

@@ -0,0 +1,64 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	// ------------------------------------
+	// #1 - THE BEST WAY
+	// ------------------------------------
+
+	students := [...][3]float64{
+		{5, 6, 1},
+		{9, 8, 4},
+	}
+
+	var avg float64
+
+	for _, grades := range students {
+		for _, grade := range grades {
+			avg += grade
+		}
+	}
+
+	const N = float64(len(students) * len(students[0]))
+	fmt.Printf("Avg Grade: %g\n", avg/N)
+
+	// ------------------------------------
+	// #2 - SO SO WAY
+	// ------------------------------------
+
+	// // You don't need to define the types for the inner arrays
+	// students := [2][3]float64{
+	// 	[3]float64{5, 6, 1},
+	// 	[3]float64{9, 8, 4},
+	// }
+
+	// var avg float64
+
+	// avg += students[0][0] + students[0][1] + students[0][2]
+	// avg += students[1][0] + students[1][1] + students[1][2]
+
+	// const N = float64(len(students) * len(students[0]))
+	// fmt.Printf("Avg Grade: %g\n", avg/N)
+
+	// ------------------------------------
+	// #3 - MANUAL WAY
+	// ------------------------------------
+
+	// student1 := [3]float64{5, 6, 1}
+	// student2 := [3]float64{9, 8, 4}
+
+	// var avg float64
+	// avg += student1[0] + student1[1] + student1[2]
+	// avg += student2[0] + student2[1] + student2[2]
+
+	// const N = float64(len(student1) * 2)
+	// fmt.Printf("Avg Grade: %g\n", avg/N)
+}

14-arrays/09-keyed-elements/01-unkeyed/main.go

@@ -0,0 +1,20 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	rates := [3]float64{
+		0.5,
+		2.5,
+		1.5,
+	}
+
+	fmt.Println(rates)
+}

14-arrays/09-keyed-elements/02-keyed/main.go

@@ -0,0 +1,28 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	rates := [3]float64{
+		0: 0.5, // index: 0
+		1: 2.5, // index: 1
+		2: 1.5, // index: 2
+	}
+
+	fmt.Println(rates)
+
+	// above array literal equals to this:
+	//
+	// rates := [3]float64{
+	// 	0.5,
+	// 	2.5,
+	// 	1.5,
+	// }
+}

14-arrays/09-keyed-elements/03-keyed-order/main.go

@@ -0,0 +1,28 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	rates := [3]float64{
+		1: 2.5, // index: 1
+		0: 0.5, // index: 0
+		2: 1.5, // index: 2
+	}
+
+	fmt.Println(rates)
+
+	// above array literal equals to this:
+	//
+	// rates := [3]float64{
+	// 	0.5,
+	// 	2.5,
+	// 	1.5,
+	// }
+}

14-arrays/09-keyed-elements/04-keyed-auto-initialize/main.go

@@ -0,0 +1,28 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	rates := [3]float64{
+		// index 0 empty
+		// index 1 empty
+		2: 1.5, // index: 2
+	}
+
+	fmt.Println(rates)
+
+	// above array literal equals to this:
+	//
+	// rates := [3]float64{
+	// 	0.,
+	// 	0.,
+	// 	1.5,
+	// }
+}

14-arrays/09-keyed-elements/05-keyed-auto-initialize-ellipsis/main.go

@@ -0,0 +1,36 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	// ellipsis (...) below calculates the length of the
+	// array automatically
+	rates := [...]float64{
+		// index 0 empty
+		// index 1 empty
+		// index 2 empty
+		// index 3 empty
+		// index 4 empty
+		5: 1.5, // index: 5
+	}
+
+	fmt.Println(rates)
+
+	// above array literal equals to this:
+	//
+	// rates := [6]float64{
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	1.5,
+	// }
+}

14-arrays/09-keyed-elements/06-keyed-and-unkeyed/main.go

@@ -0,0 +1,34 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	rates := [...]float64{
+		// index 1 to 4 empty
+
+		5:   1.5, // index: 5
+		2.5, //      index: 6
+		0:   0.5, // index: 0
+	}
+
+	fmt.Println(rates)
+
+	// above array literal equals to this:
+	//
+	// rates := [7]float64{
+	// 	0.5,
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	0.,
+	// 	1.5,
+	//  2.5,
+	// }
+}

14-arrays/09-keyed-elements/07-xratio-example/02-with-keys/main.go

@@ -11,20 +11,28 @@ import "fmt"
 
 // REFACTORED VERSION
 // It uses well-defined names instead of magic numbers.
-// Thanks to keyed elements and constants.
+// Thanks to the keyed elements and constants.
 
 func main() {
 	const (
-		ETH = iota
+		ETH = 9 - iota
 		WAN
+		ICX
+		// you can add more cryptocurrencies here
+		// watch out the -1 index though!
 	)
 
 	rates := [...]float64{
 		ETH: 25.5,
 		WAN: 120.5,
+		ICX: 20,
+		// you can add more cryptocurrencies here
 	}
 
 	// uses well-defined names (ETH, WAN, ...) - good
 	fmt.Printf("1 BTC is %g ETH\n", rates[ETH])
 	fmt.Printf("1 BTC is %g WAN\n", rates[WAN])
+	fmt.Printf("1 BTC is %g ICX\n", rates[ICX])
+
+	fmt.Printf("%#v\n", rates)
 }

14-arrays/_experimental/11-avg/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/_experimental/11-avg/solution-slices/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/_experimental/11-avg/solution/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/_experimental/11-sort/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/_experimental/11-word-finder/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/_experimental/__main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 const (
 	Mon Weekday = iota
 	Tue

14-arrays/_experimental/addr/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/_experimental/csv-writer-slices/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/_experimental/wall-clock/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/exercises/00-name/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 // ---------------------------------------------------------

14-arrays/exercises/00-name/solution/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 func main() {

14-arrays/exercises/01-declare-empty/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 // ---------------------------------------------------------

14-arrays/exercises/01-declare-empty/solution/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/exercises/0x-hipsters-love-search/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 // search for books in hipster's love

14-arrays/exercises/0x-hipsters-love-search/solution/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import (

14-arrays/xx-examples-3-hipsters-love-bookstore/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

14-arrays/xx-examples-4-hipsters-love-bookstore/main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"

main.go

@@ -1,3 +1,10 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
 package main
 
 import "fmt"