add: arrays digital clock project

15-arrays-project-clock/01-printing-the-digits/challenge/main.go

@@ -0,0 +1,53 @@
+// 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
+
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// ★ GOAL 1  : Printing the Digits
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+
+// - [ ] Define a new placeholder type
+
+// - [ ] Create the digits from "zero" to "nine"
+
+// - [ ] Put them into the "digits" array
+
+// - [ ] Print them side-by-side
+//
+//   - [ ] Loop for all the lines in a digit
+//
+//   - [ ] Print each digit line by line
+//
+//   - [ ] Don't forget printing a space after each digit
+//
+//   - [ ] Don't forget printing a newline after each line
+//
+// EXAMPLE: Let's say you want to print 10.
+//
+//       ██   ███ <--- Print a new line after printing a single line from
+//        █   █ █     all the digits.
+//        █   █ █
+//        █   █ █
+//       ███  ███
+//          ^^
+//          ||
+//          ++----> Add space between the digits
+//
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// ★ Usable Artifacts
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+
+// Clock Characters:
+//
+//   You can put these in constants if you like.
+//
+//   Use this for the digits       : "█"
+//   Use this for the separators   : "░"
+
+func main() {
+}

15-arrays-project-clock/01-printing-the-digits/solution/main.go

@@ -11,15 +11,6 @@ import (
 	"fmt"
 )
 
-// GOALS:
-// 1. Define a new placeholder type
-// 2. Create the digits
-// 3. Put all of them in "digits" array
-// 4. Print them side-by-side
-
-// Use this for the digits       : "█"
-// Use this for the separators   : "░"
-
 func main() {
 	// for keeping things easy to read and type-safe
 	type placeholder [5]string

15-arrays-project-clock/02-printing-the-clock/challenge/main.go

@@ -0,0 +1,139 @@
+// 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/
+//
+
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// ★ GOAL 2  : Printing the Clock
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+//
+// - [ ] Get the current time
+//
+// - [ ] Get the current hour, minute and second from the current time
+//
+// - [ ] Create the clock array
+//
+//   - [ ] Get the individual digits from the digits array
+//
+// - [ ] Print the clock
+//
+//   - [ ] In the loops, use the clocks array instead
+//
+// - [ ] Create a separator array (it's also a placeholder)
+//
+// - [ ] Add the separators into the correct positions of
+//       the clock array
+//
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// ★ Usable Artifacts
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+
+// Clock Characters:
+//
+//   You can put these in constants if you like.
+//
+//   Use this for the digits       : "█"
+//   Use this for the separators   : "░"
+
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	type placeholder [5]string
+
+	zero := placeholder{
+		"███",
+		"█ █",
+		"█ █",
+		"█ █",
+		"███",
+	}
+
+	one := placeholder{
+		"██ ",
+		" █ ",
+		" █ ",
+		" █ ",
+		"███",
+	}
+
+	two := placeholder{
+		"███",
+		"  █",
+		"███",
+		"█  ",
+		"███",
+	}
+
+	three := placeholder{
+		"███",
+		"  █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	four := placeholder{
+		"█ █",
+		"█ █",
+		"███",
+		"  █",
+		"  █",
+	}
+
+	five := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"  █",
+		"███",
+	}
+
+	six := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	seven := placeholder{
+		"███",
+		"  █",
+		"  █",
+		"  █",
+		"  █",
+	}
+
+	eight := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	nine := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	digits := [...]placeholder{
+		zero, one, two, three, four, five, six, seven, eight, nine,
+	}
+
+	for line := range digits[0] {
+		for digit := range digits {
+			fmt.Print(digits[digit][line], "  ")
+		}
+		fmt.Println()
+	}
+}

15-arrays-project-clock/02-printing-the-clock/solution/main.go

@@ -12,14 +12,6 @@ import (
 	"time"
 )
 
-// GOALS:
-// 1. Get time
-// 2. Create the clock array
-//    Use the digits array
-// 3. Print the digits
-//    Use the clock array instead of the digits array
-// 4. Add the colons
-
 func main() {
 	type placeholder [5]string
 
@@ -136,11 +128,4 @@ func main() {
 		}
 		fmt.Println()
 	}
-
-	// for line := range clock[0] {
-	// 	for digit := range clock {
-	// 		fmt.Print(clock[digit][line], "  ")
-	// 	}
-	// 	fmt.Println()
-	// }
 }

15-arrays-project-clock/03-animating-the-clock/challenge/main.go

@@ -0,0 +1,196 @@
+// 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/
+//
+
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// ★ GOAL 3  : Animate the Clock
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+
+// - [ ] Create an infinite loop to update the clock
+//
+//
+// - [ ] Update the clock every second
+//
+//       time.Sleep(time.Second) will stop the world for 1 second
+//
+//       See this for more info:
+//       https://golang.org/pkg/time/#Sleep
+//
+//
+// - [ ] Clear the screen before the infinite loop
+//
+//       + Get my library for clearing the screen:
+//
+//           go get -u github.com/inancgumus/screen
+//
+//       + Then, import it and call it in your code like this:
+//
+//           screen.Clear()
+//
+//       + If you're using Go Playground instead, do this:
+//
+//           fmt.Println("\f")
+//
+//
+// - [ ] Move the cursor to the top-left corner of the screen,
+//       before each step of the infinite loop
+//
+//       + Call this in your code like this:
+//
+//           screen.MoveTopLeft()
+//
+//       + If you're using Go Playground instead, do this again:
+//
+//           fmt.Println("\f")
+//
+//
+// -----------------------------------------------------------------------------
+// SIDE NOTE FOR THE CURIOUS
+// -----------------------------------------------------------------------------
+//
+// If you're curious about how my screen clearing package works, read on.
+//
+//   On bash, it uses special commands, if you open the code, you can see that.
+//
+//     \033 is a special control code:
+//     [2J clears the screen and the cursor
+//     [H  moves the cursor to 0, 0 screen position
+//
+//     See for more info:
+//     https://bluesock.org/~willkg/dev/ansi.html
+//
+//   On Windows, I'm directly calling the Windows API functions. This is way
+//   advanced at this stage of the course, however, I'll explain it afterward.
+//
+//   My package automatically adjusts itself depending on where it is compiled.
+//   On Windows, it uses the special Windows API calls;
+//   On other operating systems, it uses the bash special commands
+//   that I've explained above.
+
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	type placeholder [5]string
+
+	zero := placeholder{
+		"███",
+		"█ █",
+		"█ █",
+		"█ █",
+		"███",
+	}
+
+	one := placeholder{
+		"██ ",
+		" █ ",
+		" █ ",
+		" █ ",
+		"███",
+	}
+
+	two := placeholder{
+		"███",
+		"  █",
+		"███",
+		"█  ",
+		"███",
+	}
+
+	three := placeholder{
+		"███",
+		"  █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	four := placeholder{
+		"█ █",
+		"█ █",
+		"███",
+		"  █",
+		"  █",
+	}
+
+	five := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"  █",
+		"███",
+	}
+
+	six := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	seven := placeholder{
+		"███",
+		"  █",
+		"  █",
+		"  █",
+		"  █",
+	}
+
+	eight := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	nine := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	colon := placeholder{
+		"   ",
+		" ░ ",
+		"   ",
+		" ░ ",
+		"   ",
+	}
+
+	digits := [...]placeholder{
+		zero, one, two, three, four, five, six, seven, eight, nine,
+	}
+
+	now := time.Now()
+	hour, min, sec := now.Hour(), now.Minute(), now.Second()
+
+	fmt.Printf("hour: %d, min: %d, sec: %d\n", hour, min, sec)
+
+	// [8][5]string
+	clock := [...]placeholder{
+		// extract the digits: 17 becomes, 1 and 7 respectively
+		digits[hour/10], digits[hour%10],
+		colon,
+		digits[min/10], digits[min%10],
+		colon,
+		digits[sec/10], digits[sec%10],
+	}
+
+	for line := range clock[0] {
+		for digit := range clock {
+			fmt.Print(clock[digit][line], "  ")
+		}
+		fmt.Println()
+	}
+}

15-arrays-project-clock/03-animating-the-clock/solution/main.go

@@ -10,33 +10,8 @@ package main
 import (
 	"fmt"
 	"time"
-)
 
-// GOALS:
+	"github.com/inancgumus/screen"
-// 1. Update the clock in a loop
-//
-// 2. Before the whole loop:
-//    Clear the screen once
-//
-// 3. Before each step of the loop:
-//    Move the cursor to top-left position
-
-// So, how to clear the screen and move the cursor?
-// Check out the following constants.
-//
-// screenClear  : When printed clears the screen.
-// cursorMoveTop: Moves the cursor to top-left screen position
-//
-// + Note: This only works on bash command prompts.
-//
-// + For Go Playground, use these instead:
-//   screenClear   = "\f"
-//   cursorMoveTop = "\f"
-//
-// See for more info: https://bluesock.org/~willkg/dev/ansi.html
-const (
-	screenClear   = "\033[2J"
-	cursorMoveTop = "\033[H"
 )
 
 func main() {
@@ -134,15 +109,16 @@ func main() {
 		zero, one, two, three, four, five, six, seven, eight, nine,
 	}
 
-	// clears the command screen
+	// For Go Playground, do not use this.
-	fmt.Print(screenClear)
+	screen.Clear()
 
 	// Go Playground will not run an infinite loop.
 	// So, instead, you may loop for 1000 times:
 	// for i := 0; i < 1000; i++ {
 	for {
-		// moves the cursor to the top-left position
+		// For Go Playground, use this instead:
-		fmt.Print(cursorMoveTop)
+		// fmt.Print("\f")
+		screen.MoveTopLeft()
 
 		now := time.Now()
 		hour, min, sec := now.Hour(), now.Minute(), now.Second()

15-arrays-project-clock/04-blinking-the-separators/challenge/main.go

@@ -0,0 +1,165 @@
+// 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/
+//
+
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// ★ GOAL 4: Blinking the Separators
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+
+// - [ ] Blink the separators
+//
+//       They should be visible per two seconds.
+//
+//       Example: 1st second invisible
+//                2nd second visible
+//                3rd second invisible
+//                4th second visible
+//
+// HINT: There are two ways to do this.
+//
+//   1- Manipulating the clock array directly
+//      (by adding/removing the separators)
+//
+//   2- Deciding what to print when printing the clock
+
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+// YOU CAN ALSO FIND THE FINAL SOLUTION WITH ANNOTATIONS:
+// 05-full-annotated-solution
+// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
+
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+const (
+	screenClear   = "\033[2J"
+	cursorMoveTop = "\033[H"
+)
+
+func main() {
+	type placeholder [5]string
+
+	zero := placeholder{
+		"███",
+		"█ █",
+		"█ █",
+		"█ █",
+		"███",
+	}
+
+	one := placeholder{
+		"██ ",
+		" █ ",
+		" █ ",
+		" █ ",
+		"███",
+	}
+
+	two := placeholder{
+		"███",
+		"  █",
+		"███",
+		"█  ",
+		"███",
+	}
+
+	three := placeholder{
+		"███",
+		"  █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	four := placeholder{
+		"█ █",
+		"█ █",
+		"███",
+		"  █",
+		"  █",
+	}
+
+	five := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"  █",
+		"███",
+	}
+
+	six := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	seven := placeholder{
+		"███",
+		"  █",
+		"  █",
+		"  █",
+		"  █",
+	}
+
+	eight := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	nine := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	colon := placeholder{
+		"   ",
+		" ░ ",
+		"   ",
+		" ░ ",
+		"   ",
+	}
+
+	digits := [...]placeholder{
+		zero, one, two, three, four, five, six, seven, eight, nine,
+	}
+
+	fmt.Print(screenClear)
+
+	for {
+		fmt.Print(cursorMoveTop)
+
+		now := time.Now()
+		hour, min, sec := now.Hour(), now.Minute(), now.Second()
+
+		clock := [...]placeholder{
+			digits[hour/10], digits[hour%10],
+			colon,
+			digits[min/10], digits[min%10],
+			colon,
+			digits[sec/10], digits[sec%10],
+		}
+
+		for line := range clock[0] {
+			for digit := range clock {
+				fmt.Print(clock[digit][line], "  ")
+			}
+			fmt.Println()
+		}
+
+		time.Sleep(time.Second)
+	}
+}

15-arrays-project-clock/04-blinking-the-separators/solution/main.go

@@ -10,14 +10,8 @@ package main
 import (
 	"fmt"
 	"time"
-)
 
-// GOAL:
+	"github.com/inancgumus/screen"
-// Blink the colons
-
-const (
-	screenClear   = "\033[2J"
-	cursorMoveTop = "\033[H"
 )
 
 func main() {
@@ -115,10 +109,10 @@ func main() {
 		zero, one, two, three, four, five, six, seven, eight, nine,
 	}
 
-	fmt.Print(screenClear)
+	screen.Clear()
 
 	for {
-		fmt.Print(cursorMoveTop)
+		screen.MoveTopLeft()
 
 		now := time.Now()
 		hour, min, sec := now.Hour(), now.Minute(), now.Second()
@@ -143,8 +137,6 @@ func main() {
 			fmt.Println()
 		}
 
-		// pause for 1 second
 		time.Sleep(time.Second)
-		// fmt.Println()
 	}
 }

15-arrays-project-clock/05-full-annotated-solution/main.go

@@ -10,21 +10,8 @@ package main
 import (
 	"fmt"
 	"time"
-)
 
-// screenClear  : When printed clears the screen.
+	"github.com/inancgumus/screen"
-// cursorMoveTop: Moves the cursor to top-left screen position
-//
-// + Note: This only works on bash command prompts.
-//
-// + For Go Playground, use these instead:
-//   screenClear   = "\f"
-//   cursorMoveTop = "\f"
-//
-// See for more info: https://bluesock.org/~willkg/dev/ansi.html
-const (
-	screenClear   = "\033[2J"
-	cursorMoveTop = "\033[H"
 )
 
 func main() {
@@ -135,15 +122,16 @@ func main() {
 		zero, one, two, three, four, five, six, seven, eight, nine,
 	}
 
-	// clears the command screen
+	// For Go Playground, do not use this.
-	fmt.Print(screenClear)
+	screen.Clear()
 
 	// Go Playground will not run an infinite loop.
 	// Loop for example 1000 times instead, like this:
 	//   for i := 0; i < 1000; i++ { ... }
 	for {
-		// moves the cursor to the top-left position
+		// For Go Playground, use this instead:
-		fmt.Print(cursorMoveTop)
+		// fmt.Print("\f")
+		screen.MoveTopLeft()
 
 		// get the current hour, minute and second
 		now := time.Now()

15-arrays-project-clock/README.md

@@ -0,0 +1,36 @@
+## NOTES
+- I've explained the challenges and the solutions step by step
+- So, if you get stuck, you can check out the next step without having to look at the entire final solution
+- You can find the explanations and solutions by clicking on the header links below 
+
+## GET SOCIAL
+- Click the link below to tweet your solution when you complete: http://bit.ly/GOTWEET-CLOCK
+- Discuss your solution with other gophers here: http://bit.ly/LEARNGOSLACK
+
+---
+
+## GOALS:
+
+### 👉 [STEP #1 — Print the Digits](https://github.com/inancgumus/learngo/tree/master/15-arrays-project-clock/01-printing-the-digits/)
+- [ ] Define a new placeholder type
+- [ ] Create the digit arrays from 0 to 9
+- [ ] Put them into the "digits" array
+- [ ] Print them side-by-side
+
+### 👉 [STEP #2 — Print the Clock](https://github.com/inancgumus/learngo/tree/master/15-arrays-project-clock/02-printing-the-clock/)
+- [ ] Get the current time
+- [ ] Create the clock array
+- [ ] Print the clock
+- [ ] Add the separators
+
+### 👉 [STEP #3 — Animate the Clock](https://github.com/inancgumus/learngo/tree/master/15-arrays-project-clock/03-animating-the-clock/)
+- [ ] Create an infinite loop to update the clock
+- [ ] Update the clock every second
+- [ ] Clear the screen before the infinite loop
+- [ ] Move the cursor to the top-left corner of the screen before each
+      step of the infinite loop
+
+### 👉 [BONUS: STEP #4 — Blink the Clock](https://github.com/inancgumus/learngo/tree/master/15-arrays-project-clock/04-blinking-the-separators/)
+- [ ] Blink the separators
+
+### 👉 [FULL ANNOTATED SOLUTION](https://github.com/inancgumus/learngo/tree/master/15-arrays-project-clock/05-full-annotated-solution/main.go)

etc/stratch/main.go

@@ -1,4 +1,129 @@
 package main
 
+import (
+	"fmt"
+	"time"
+
+	"github.com/inancgumus/screen"
+)
+
 func main() {
+	type placeholder [5]string
+
+	zero := placeholder{"███", "█ █", "█ █", "█ █", "███"}
+	one := placeholder{"██ ",
+		" █ ",
+		" █ ",
+		" █ ",
+		"███",
+	}
+
+	two := placeholder{
+		"███",
+		"  █",
+		"███",
+		"█  ",
+		"███",
+	}
+
+	three := placeholder{
+		"███",
+		"  █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	four := placeholder{
+		"█ █",
+		"█ █",
+		"███",
+		"  █",
+		"  █",
+	}
+
+	five := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"  █",
+		"███",
+	}
+
+	six := placeholder{
+		"███",
+		"█  ",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	seven := placeholder{
+		"███",
+		"  █",
+		"  █",
+		"  █",
+		"  █",
+	}
+
+	eight := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"█ █",
+		"███",
+	}
+
+	nine := placeholder{
+		"███",
+		"█ █",
+		"███",
+		"  █",
+		"███",
+	}
+
+	colon := placeholder{
+		"   ",
+		" ░ ",
+		"   ",
+		" ░ ",
+		"   ",
+	}
+
+	digits := [...]placeholder{
+		zero, one, two, three, four, five, six, seven, eight, nine,
+	}
+
+	screen.Clear()
+
+	for {
+		screen.MoveTopLeft()
+
+		now := time.Now()
+		hour, min, sec := now.Hour(), now.Minute(), now.Second()
+
+		// [8][5]string -> [8]placeholder
+		clock := [...]placeholder{
+			digits[hour/10], digits[hour%10],
+			colon,
+			digits[min/10], digits[min%10],
+			colon,
+			digits[sec/10], digits[sec%10],
+		}
+
+		for line := range clock[0] {
+			for index, digit := range clock {
+				next := clock[index][line]
+				if digit == colon && sec%2 == 0 {
+					next = "   "
+				}
+
+				fmt.Print(next, "  ")
+			}
+			fmt.Println()
+		}
+		fmt.Println()
+
+		time.Sleep(time.Second)
+	}
 }

x-tba/15-arrays-project-clock/01-challenge/main.go

@@ -1,160 +0,0 @@
-package main
-
-// ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖
-// ~GET SOCIAL~
-//
-// Tweet when you complete:
-// http://bit.ly/GOTWEET-CLOCK
-//
-// Discuss it with other gophers:
-// http://bit.ly/LEARNGOSLACK
-// ➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖
-
-func main() {
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// Notes
-	// + I've created the solutions step by step
-	// + So, if you get stuck, you can check out the next step
-	//   without having to look at the entire final solution
-	// + For drawing the clock, you may use the artifacts below
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// ★ Usable Artifacts
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-
-	// Clock Characters:
-	//
-	//   You can put these in constants if you like.
-	//
-	//   Use this for the digits       : "█"
-	//   Use this for the separators   : "░"
-
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// ★ GOAL 1  : Printing the Digits
-	// ★ Solution: 02-printing-the-digits
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-
-	// - [ ] Define a new placeholder type
-	// ...
-
-	// - [ ] Create the digits
-	// zero := ...
-	// one := ...
-	// ...
-
-	// - [ ] Put them into the "digits" array
-	// digits := ...
-
-	// - [ ] Print them side-by-side
-	//       - [ ] Loop for all the lines in a digit
-	//       - [ ] Print each digit line by line
-	//
-	//       - [ ] Don't forget printing a space after each digit
-	//       - [ ] Don't forget printing a newline after each line
-	//
-	// EXAMPLE: Let's say you want to print 10.
-	//
-	//       ██   ███<--- Print a new line after printing a single line from
-	//        █   █ █     all the digits.
-	//        █   █ █
-	//        █   █ █
-	//       ███  ███
-	//          ^^
-	//          ||
-	//          ++----> Add space between the digits
-	//
-
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// ★ GOAL 2  : Printing the Clock
-	// ★ Solution: 03-printing-the-clock
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-
-	// - [ ] Get the current time
-
-	// - [ ] Get the current hour, minute and second from the current time
-
-	// - [ ] Create the clock array
-	//
-	//       - [ ] Get the individual digits from the digits array
-	//
-	// clock := ...
-
-	// - [ ] Print the clock
-	//
-	//       - [ ] In the loops, use the clocks array instead
-
-	// - [ ] Create a separator array (it's also a placeholder)
-
-	// - [ ] Add the separators into the correct positions of
-	//       the clock array
-
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// ★ GOAL 3  : Updating the Clock
-	// ★ Solution: 04-updating-the-clock
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-
-	// - [ ] Create an infinite loop to update the clock
-
-	// - [ ] Update the clock every second
-	//
-	//       time.Sleep(time.Second) will stop the world for 1 second
-	//
-	//       See this for more info:
-	//       https://golang.org/pkg/time/#Sleep
-
-	// - [ ] Clear the screen before the infinite loop
-	//
-	//       This string value clears the screen when printed:
-	//
-	//         "\033[2J"
-	//
-	//       + For Go Playground, use this instead: "\f"
-	//
-	//       + This only works on bash command prompts.
-
-	// - [ ] Move the cursor to the top-left corner of the screen before each step
-	//       of the infinite loop
-	//
-	//       This string value moves the cursor like so when printed:
-	//
-	//         "\033[H"
-	//
-	//       + For Go Playground, use this instead: "\f"
-	//
-	//       + This only works on bash command prompts.
-
-	//       + If you're curious:
-	//         \033 is a special control code:
-	//         [2J clears the screen and the cursor
-	//         [H  moves the cursor to 0, 0 screen position
-	//
-	//         See for more info:
-	//         https://bluesock.org/~willkg/dev/ansi.html
-
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// ★ GOAL 4: Blinking the Separators
-	// ★ Solution: 05-blink-the-separators
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-
-	// - [ ] Blink the separators
-	//
-	//       They should be visible per two seconds.
-	//
-	//       Example: 1st second invisible
-	//                2nd second visible
-	//                3rd second invisible
-	//                4th second visible
-	//
-	// HINT: There are two ways to do this.
-	//
-	//       1- Manipulating the clock array directly
-	//          (by adding/removing the separators)
-	//
-	//       2- Deciding what to print when printing the clock
-
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-	// YOU CAN FIND THE FINAL SOLUTION WITH ANNOTATIONS:
-	// 06-full-annotated-code
-	// ★★★★★★★★★★★★★★★★★★★★★★★★★★★
-}

x-tba/15-arrays-project-clock/goals.md

@@ -1,23 +0,0 @@
-## GOALS:
-
-### STEP #1 — Create Digits
-- [ ] Define a new placeholder type
-- [ ] Create the digits
-- [ ] Put them into the "digits" array
-- [ ] Print them side-by-side
-
-### STEP #2 — Print the Clock
-- [ ] Get the current time
-- [ ] Create the clock array
-- [ ] Print the clock
-- [ ] Add the separators
-
-### STEP #3 — Animate the Clock
-- [ ] Create an infinite loop to update the clock
-- [ ] Update the clock every second
-- [ ] Clear the screen before the infinite loop
-- [ ] Move the cursor to the top-left corner of the screen before each
-      step of the infinite loop
-
-### BONUS
-- [ ] Blink the separators