From bf5983682abb769df026347968deb3c1e8cb30fc Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Thu, 6 Feb 2020 21:58:15 +0700
Subject: [PATCH 01/25] Fix #33 - https://tour.golang.org/moretypes/1

---
 sidik/moretypes_1.go | 14 ++++++++++++++
 sidik/sidik.go       |  2 ++
 2 files changed, 16 insertions(+)
 create mode 100644 sidik/moretypes_1.go

diff --git a/sidik/moretypes_1.go b/sidik/moretypes_1.go
new file mode 100644
index 0000000..d48febc
--- /dev/null
+++ b/sidik/moretypes_1.go
@@ -0,0 +1,14 @@
+package sidik
+
+import "fmt"
+
+func type1()  {
+	i := 1000
+	p := &i
+	fmt.Println("i before = ",i)
+
+	*p = 2000
+
+	fmt.Println("i after = ",i)
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index e7e34eb..e12766b 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -37,6 +37,8 @@ func Main() {
 	flow12()
 	flow13()
 	flow14()
+	fmt.Printf("\n")
+	type1()
 }
 
 func basic1() {

From ccb54e3b088c3bf604dbb5e20715775c39bcb53f Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Thu, 6 Feb 2020 22:14:30 +0700
Subject: [PATCH 02/25] Fix #33 - https://tour.golang.org/moretypes/2

---
 sidik/moretypes_2.go | 13 +++++++++++++
 sidik/sidik.go       |  1 +
 2 files changed, 14 insertions(+)
 create mode 100644 sidik/moretypes_2.go

diff --git a/sidik/moretypes_2.go b/sidik/moretypes_2.go
new file mode 100644
index 0000000..a4c65c0
--- /dev/null
+++ b/sidik/moretypes_2.go
@@ -0,0 +1,13 @@
+package sidik
+
+import "fmt"
+
+type Vertex struct {
+	X int
+	Y int
+	Z int
+}
+
+func type2() {
+	fmt.Println(7, 5, 8)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index e12766b..d27e5ea 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -39,6 +39,7 @@ func Main() {
 	flow14()
 	fmt.Printf("\n")
 	type1()
+	type2()
 }
 
 func basic1() {

From 30a9dcb0079a9c20923ab96c33870d972200d2ac Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 07:24:23 +0700
Subject: [PATCH 03/25] Fix #33 - https://tour.golang.org/moretypes/3

---
 sidik/moretypes_2.go |  2 +-
 sidik/moretypes_3.go | 18 ++++++++++++++++++
 sidik/sidik.go       |  1 +
 3 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 sidik/moretypes_3.go

diff --git a/sidik/moretypes_2.go b/sidik/moretypes_2.go
index a4c65c0..f4b1a8c 100644
--- a/sidik/moretypes_2.go
+++ b/sidik/moretypes_2.go
@@ -9,5 +9,5 @@ type Vertex struct {
 }
 
 func type2() {
-	fmt.Println(7, 5, 8)
+	fmt.Println(Vertex{7, 5, 8})
 }
\ No newline at end of file
diff --git a/sidik/moretypes_3.go b/sidik/moretypes_3.go
new file mode 100644
index 0000000..6fe77bc
--- /dev/null
+++ b/sidik/moretypes_3.go
@@ -0,0 +1,18 @@
+package sidik
+
+import "fmt"
+
+type Vertex1 struct {
+	X int
+	Y int
+	Z int
+}
+
+func type3() { //mengakses properti struct dengan titik
+	p := Vertex{8, 4, 10}
+	p.X = 19
+	p.Z	= 8
+
+	fmt.Println(p.X, p.Z)
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index d27e5ea..6692fa3 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -40,6 +40,7 @@ func Main() {
 	fmt.Printf("\n")
 	type1()
 	type2()
+	type3()
 }
 
 func basic1() {

From 2cd5dec47c2dceaa12d92131363cdf900e7cf7a1 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 09:04:43 +0700
Subject: [PATCH 04/25] Fix #33 - https://tour.golang.org/moretypes/4

---
 sidik/moretypes_4.go | 17 +++++++++++++++++
 sidik/sidik.go       |  1 +
 2 files changed, 18 insertions(+)
 create mode 100644 sidik/moretypes_4.go

diff --git a/sidik/moretypes_4.go b/sidik/moretypes_4.go
new file mode 100644
index 0000000..806a94b
--- /dev/null
+++ b/sidik/moretypes_4.go
@@ -0,0 +1,17 @@
+package sidik
+
+import "fmt"
+
+type Vertex2 struct {
+	X int
+	Y int
+}
+
+func type4() {
+	i := Vertex2{2, 3}
+	p := &i
+	p.Y = 8
+
+	fmt.Println(i)
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 6692fa3..af08036 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -41,6 +41,7 @@ func Main() {
 	type1()
 	type2()
 	type3()
+	type4()
 }
 
 func basic1() {

From 6d792352400d5ef0b05a90a2e5da23bc28dcd775 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 09:24:03 +0700
Subject: [PATCH 05/25] Fix #33 - https://tour.golang.org/moretypes/5

---
 sidik/moretypes_5.go | 18 ++++++++++++++++++
 sidik/sidik.go       |  1 +
 2 files changed, 19 insertions(+)
 create mode 100644 sidik/moretypes_5.go

diff --git a/sidik/moretypes_5.go b/sidik/moretypes_5.go
new file mode 100644
index 0000000..0988015
--- /dev/null
+++ b/sidik/moretypes_5.go
@@ -0,0 +1,18 @@
+package sidik
+
+import "fmt"
+
+type Vertex3 struct {
+	X, Y int
+}
+
+var (
+	v = Vertex3{5, 44} // struct asli
+	v2 = Vertex3{X:6} // mengakses satu property di struct
+	v3 = Vertex3{} // struct zzero value
+	p = &Vertex3{3,4} //pointer struct, harus dengan * jika ingin value yang asli 
+)
+
+func type5() {
+	fmt.Println(v, v2, v3, p)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index af08036..c581673 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -42,6 +42,7 @@ func Main() {
 	type2()
 	type3()
 	type4()
+	type5()
 }
 
 func basic1() {

From 96c7644c219b6c0d421c5edf7241078cd31c3daa Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 09:54:15 +0700
Subject: [PATCH 06/25] Fix #33 - https://tour.golang.org/moretypes/6

---
 sidik/moretype_6.go | 17 +++++++++++++++++
 sidik/sidik.go      |  1 +
 2 files changed, 18 insertions(+)
 create mode 100644 sidik/moretype_6.go

diff --git a/sidik/moretype_6.go b/sidik/moretype_6.go
new file mode 100644
index 0000000..e481a04
--- /dev/null
+++ b/sidik/moretype_6.go
@@ -0,0 +1,17 @@
+package sidik
+
+import "fmt"
+
+func type6() {
+	var s [3]string
+	s[0] = "sidik"
+	s[1] = "sudah"
+	s[2] = "go"
+
+	fmt.Println(s[0], s[2])
+	fmt.Println(s)
+
+	primes := [4]int{1,2,3,4}
+	fmt.Println(primes)
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index c581673..66b2032 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -43,6 +43,7 @@ func Main() {
 	type3()
 	type4()
 	type5()
+	type6()
 }
 
 func basic1() {

From 04fe945000c1e58c0982e08ef7a2605c06283641 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 10:03:25 +0700
Subject: [PATCH 07/25] Fix #33 - https://tour.golang.org/moretypes/7

---
 sidik/{moretype_6.go => moretypes_6.go} |  0
 sidik/moretypes_7.go                    | 10 ++++++++++
 sidik/sidik.go                          |  1 +
 3 files changed, 11 insertions(+)
 rename sidik/{moretype_6.go => moretypes_6.go} (100%)
 create mode 100644 sidik/moretypes_7.go

diff --git a/sidik/moretype_6.go b/sidik/moretypes_6.go
similarity index 100%
rename from sidik/moretype_6.go
rename to sidik/moretypes_6.go
diff --git a/sidik/moretypes_7.go b/sidik/moretypes_7.go
new file mode 100644
index 0000000..34b7c99
--- /dev/null
+++ b/sidik/moretypes_7.go
@@ -0,0 +1,10 @@
+package sidik
+
+import "fmt"
+
+func type7() {
+	prime := [6]int{12,3,42,4,5,3}
+
+	var s []int = prime[1:4]
+	fmt.Println(s)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 66b2032..85ded53 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -44,6 +44,7 @@ func Main() {
 	type4()
 	type5()
 	type6()
+	type7()
 }
 
 func basic1() {

From 714ac4a942ae2497a6521171c4e6c752529a43db Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 10:48:11 +0700
Subject: [PATCH 08/25] Fix #33 - https://tour.golang.org/moretypes/8

---
 sidik/moretypes_8.go | 24 ++++++++++++++++++++++++
 sidik/sidik.go       |  1 +
 2 files changed, 25 insertions(+)
 create mode 100644 sidik/moretypes_8.go

diff --git a/sidik/moretypes_8.go b/sidik/moretypes_8.go
new file mode 100644
index 0000000..d41b740
--- /dev/null
+++ b/sidik/moretypes_8.go
@@ -0,0 +1,24 @@
+package sidik
+
+import "fmt"
+
+func type8() {
+	names := [4]string{
+		"John",
+		"Paul",
+		"George",
+		"Ringo",
+	}
+
+	fmt.Println(names)
+
+	b := names[1:3]
+	a := names[0:2]
+
+	fmt.Println(b, a)
+
+	b[0] = "XXXx"
+	fmt.Println(b, a)
+	fmt.Println(names)
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 85ded53..7efd174 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -45,6 +45,7 @@ func Main() {
 	type5()
 	type6()
 	type7()
+	type8()
 }
 
 func basic1() {

From fe4e2873a26d1963693208fa7b16330656861a64 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 13:22:12 +0700
Subject: [PATCH 09/25] Fix #33 - https://tour.golang.org/moretypes/9

---
 sidik/moretypes_9.go | 29 +++++++++++++++++++++++++++++
 sidik/sidik.go       |  1 +
 2 files changed, 30 insertions(+)
 create mode 100644 sidik/moretypes_9.go

diff --git a/sidik/moretypes_9.go b/sidik/moretypes_9.go
new file mode 100644
index 0000000..58d8ef4
--- /dev/null
+++ b/sidik/moretypes_9.go
@@ -0,0 +1,29 @@
+package sidik
+
+import "fmt"
+
+func type9() {
+	v := []int{4, 5, 6, 33, 5, 7}
+	fmt.Println(v)
+
+	p := []bool{true, false, false, true, false}
+	fmt.Println(p)
+
+
+	s := []struct {
+		umur int
+		fact bool
+	}{
+		{9, true},
+		{11, true},
+		{4, false},
+		{6, true},
+		{2, true},
+		{3, false},
+		{5, true},
+		{7, true},
+		{11, false},
+		{13, true},
+	}
+	fmt.Println(s)
+}
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 7efd174..444260f 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -46,6 +46,7 @@ func Main() {
 	type6()
 	type7()
 	type8()
+	type9()
 }
 
 func basic1() {

From aa422b847081c563bec906945af9311689f8105b Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 13:27:20 +0700
Subject: [PATCH 10/25] Fix #33 - https://tour.golang.org/moretypes/10

---
 sidik/moretypes_10.go | 17 +++++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 18 insertions(+)
 create mode 100644 sidik/moretypes_10.go

diff --git a/sidik/moretypes_10.go b/sidik/moretypes_10.go
new file mode 100644
index 0000000..df60b5c
--- /dev/null
+++ b/sidik/moretypes_10.go
@@ -0,0 +1,17 @@
+package sidik
+
+import "fmt"
+
+func type10() {
+	s := []int{4,5,3,1,3,8,9}
+
+	s = s[1:4]
+	fmt.Println(s)
+
+	s = s[:2]
+	fmt.Println(s)
+
+	s = s[:1]
+	fmt.Println(s)
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 444260f..3e4ef0f 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -47,6 +47,7 @@ func Main() {
 	type7()
 	type8()
 	type9()
+	type10()
 }
 
 func basic1() {

From 4853ead2148ba1960c9ec2ee1d27498bdcd6f0f5 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 17:00:59 +0700
Subject: [PATCH 11/25] Fix #33 - https://tour.golang.org/moretypes/11

---
 sidik/moretypes_11.go | 21 +++++++++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 sidik/moretypes_11.go

diff --git a/sidik/moretypes_11.go b/sidik/moretypes_11.go
new file mode 100644
index 0000000..08c2082
--- /dev/null
+++ b/sidik/moretypes_11.go
@@ -0,0 +1,21 @@
+package sidik
+
+import "fmt"
+
+func type11() {
+	s := []int{5, 2, 6, 7, 8, 9, 10}
+	printSlice(s)
+
+	s = s[:0]
+	printSlice(s)
+
+	s = s[:4]
+	printSlice(s)
+
+	s = s[2:]
+	printSlice(s)
+}
+
+func printSlice(s []int)  {
+	fmt.Printf("len=%d cap=%d %v\n", len(s), cap(s), s)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 3e4ef0f..4aedd0b 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -48,6 +48,7 @@ func Main() {
 	type8()
 	type9()
 	type10()
+	type11()
 }
 
 func basic1() {

From 48c390ce9db76c7027f817386996f5dab547f6d1 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 17:05:49 +0700
Subject: [PATCH 12/25] Fix #33 - https://tour.golang.org/moretypes/12

---
 sidik/moretypes_12.go | 12 ++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 13 insertions(+)
 create mode 100644 sidik/moretypes_12.go

diff --git a/sidik/moretypes_12.go b/sidik/moretypes_12.go
new file mode 100644
index 0000000..6f725b4
--- /dev/null
+++ b/sidik/moretypes_12.go
@@ -0,0 +1,12 @@
+package sidik
+
+import "fmt"
+
+func type12() {
+	var s []int
+	fmt.Println(s, len(s), cap(s))
+	if s == nil {
+		fmt.Println("nil!")
+	}
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 4aedd0b..0412847 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -49,6 +49,7 @@ func Main() {
 	type9()
 	type10()
 	type11()
+	type12()
 }
 
 func basic1() {

From f5f8b35ff115796c5f0ec7a2471343fc7a6dcf0a Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 19:49:38 +0700
Subject: [PATCH 13/25] Fix #33 - https://tour.golang.org/moretypes/13

---
 sidik/moretypes_13.go | 21 +++++++++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 22 insertions(+)
 create mode 100644 sidik/moretypes_13.go

diff --git a/sidik/moretypes_13.go b/sidik/moretypes_13.go
new file mode 100644
index 0000000..2751feb
--- /dev/null
+++ b/sidik/moretypes_13.go
@@ -0,0 +1,21 @@
+package sidik
+
+import "fmt"
+
+func type13() {
+	a := make([]int , 5)
+	printSlice2("a", a)
+
+	b := make([]int, 0, 5)
+	printSlice2("b", b)
+
+	c := b[:2]
+	printSlice2("c", c)
+
+	d := c[2:5]
+	printSlice2("d", d)
+}
+
+func printSlice2(s string ,x []int)  {
+	fmt.Printf("%s len=%d cap=%d %v\n", s , len(x), cap(x), x)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 0412847..437fcbf 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -50,6 +50,7 @@ func Main() {
 	type10()
 	type11()
 	type12()
+	type13()
 }
 
 func basic1() {

From 51bca6bc0d906597018f9fc4fa43297896efc769 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 20:40:32 +0700
Subject: [PATCH 14/25] Fix #33 - https://tour.golang.org/moretypes/14

---
 sidik/moretypes_14.go | 24 ++++++++++++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 25 insertions(+)
 create mode 100644 sidik/moretypes_14.go

diff --git a/sidik/moretypes_14.go b/sidik/moretypes_14.go
new file mode 100644
index 0000000..e61d186
--- /dev/null
+++ b/sidik/moretypes_14.go
@@ -0,0 +1,24 @@
+package sidik
+
+import (
+	"fmt"
+	"strings"
+)
+
+func type14() {
+	board := [][]string {
+		[]string{"_", "_", "_"},
+		[]string{"_", "_", "_"},
+		[]string{"_", "_", "_"},
+	}
+
+	board[0][0] = "X"
+	board[2][2] = "O"
+	board[1][2] = "X"
+	board[1][0]	= "O"
+	board[0][2]	= "X"
+
+	for i := 0; i < len(board); i++ {
+		fmt.Printf("%s\n", strings.Join(board[i], ""))
+	}
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 437fcbf..6d4af5e 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -51,6 +51,7 @@ func Main() {
 	type11()
 	type12()
 	type13()
+	type14()
 }
 
 func basic1() {

From 62052b05bd34c63a13dbfd85fe84e242552c8b0a Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 20:46:47 +0700
Subject: [PATCH 15/25] Fix #33 - https://tour.golang.org/moretypes/15

---
 sidik/moretypes_15.go | 19 +++++++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 sidik/moretypes_15.go

diff --git a/sidik/moretypes_15.go b/sidik/moretypes_15.go
new file mode 100644
index 0000000..c05a7ce
--- /dev/null
+++ b/sidik/moretypes_15.go
@@ -0,0 +1,19 @@
+package sidik
+
+import "fmt"
+
+func type15() {
+	var s []int
+	printSlice3(s)
+
+	s = append(s, 1)
+	printSlice3(s)
+
+	s = append(s, 2,3,4)
+	printSlice3(s)
+
+}
+
+func printSlice3(s []int)  {
+	fmt.Printf("len=%d cap=%d %v\n", len(s), cap(s), s)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 6d4af5e..b8d5fec 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -52,6 +52,7 @@ func Main() {
 	type12()
 	type13()
 	type14()
+	type15()
 }
 
 func basic1() {

From 9c012476bb16a0a08a5d2dd739f2ea654014960e Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 20:53:56 +0700
Subject: [PATCH 16/25] Fix #33 - https://tour.golang.org/moretypes/16

---
 sidik/moretypes_16.go | 11 +++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 12 insertions(+)
 create mode 100644 sidik/moretypes_16.go

diff --git a/sidik/moretypes_16.go b/sidik/moretypes_16.go
new file mode 100644
index 0000000..a90ce60
--- /dev/null
+++ b/sidik/moretypes_16.go
@@ -0,0 +1,11 @@
+package sidik
+
+import "fmt"
+
+var poq = []int{1, 2, 4, 8, 16, 32, 64, 128}
+
+func type16() {
+	for i, v := range poq {
+		fmt.Printf("2**%d = %d\n", i, v)
+	}
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index b8d5fec..2ece6d9 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -53,6 +53,7 @@ func Main() {
 	type13()
 	type14()
 	type15()
+	type16()
 }
 
 func basic1() {

From eb528b65d9e95811f12eab652fa68475af5f5197 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 21:11:14 +0700
Subject: [PATCH 17/25] Fix #33 - https://tour.golang.org/moretypes/17

---
 sidik/moretypes_17.go | 15 +++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 16 insertions(+)
 create mode 100644 sidik/moretypes_17.go

diff --git a/sidik/moretypes_17.go b/sidik/moretypes_17.go
new file mode 100644
index 0000000..104d359
--- /dev/null
+++ b/sidik/moretypes_17.go
@@ -0,0 +1,15 @@
+package sidik
+
+import "fmt"
+
+func type17() {
+	ppow := make([]int, 10)
+	for i := range ppow {
+		ppow[i] = 1 <<  uint(i) // 2**i
+
+	}
+
+	for _, value := range ppow {
+		fmt.Printf("%d\n", value)
+	}
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 2ece6d9..57d7ad6 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -54,6 +54,7 @@ func Main() {
 	type14()
 	type15()
 	type16()
+	type17()
 }
 
 func basic1() {

From 1dcb076496c8d6b4593d82b9ba006c61ded991fb Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 21:33:12 +0700
Subject: [PATCH 18/25] Fix #33 - https://tour.golang.org/moretypes/18

---
 sidik/moretypes_18.go | 11 +++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 12 insertions(+)
 create mode 100644 sidik/moretypes_18.go

diff --git a/sidik/moretypes_18.go b/sidik/moretypes_18.go
new file mode 100644
index 0000000..15a0191
--- /dev/null
+++ b/sidik/moretypes_18.go
@@ -0,0 +1,11 @@
+package sidik
+
+import "golang.org/x/tour/pic"
+
+func Pic(dx, dy int) [][]uint8 {
+	return dx*dy
+}
+
+func type18() {
+	pic.Show(Pic)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 57d7ad6..a371c07 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -55,6 +55,7 @@ func Main() {
 	type15()
 	type16()
 	type17()
+	// type18()
 }
 
 func basic1() {

From c79a09f13b3daa16551e784513e804e3a79ce13a Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Fri, 7 Feb 2020 21:52:14 +0700
Subject: [PATCH 19/25] Fix #33 - https://tour.golang.org/moretypes/19

---
 sidik/moretypes_18.go | 14 +++++++-------
 sidik/moretypes_19.go | 19 +++++++++++++++++++
 sidik/sidik.go        |  1 +
 3 files changed, 27 insertions(+), 7 deletions(-)
 create mode 100644 sidik/moretypes_19.go

diff --git a/sidik/moretypes_18.go b/sidik/moretypes_18.go
index 15a0191..230eeef 100644
--- a/sidik/moretypes_18.go
+++ b/sidik/moretypes_18.go
@@ -1,11 +1,11 @@
 package sidik
 
-import "golang.org/x/tour/pic"
+// import "golang.org/x/tour/pic"
 
-func Pic(dx, dy int) [][]uint8 {
-	return dx*dy
-}
+// func Pic(dx, dy int) [][]uint8 {
+// 	return x*y
+// }
 
-func type18() {
-	pic.Show(Pic)
-}
\ No newline at end of file
+// func type18() {
+// 	pic.Show(Pic)
+// }
\ No newline at end of file
diff --git a/sidik/moretypes_19.go b/sidik/moretypes_19.go
new file mode 100644
index 0000000..22cfc81
--- /dev/null
+++ b/sidik/moretypes_19.go
@@ -0,0 +1,19 @@
+package sidik
+
+import "fmt"
+
+type Vertexx struct {
+	Lat, Long float64
+}
+
+var m map[string]Vertexx
+
+func type19() {
+	m = make(map[string]Vertexx)
+	m["Bell Labs"] = Vertexx{
+		40.68433, -74.39967,
+	}
+
+	fmt.Println(m["Bell Labs"])
+
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index a371c07..2c9730d 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -56,6 +56,7 @@ func Main() {
 	type16()
 	type17()
 	// type18()
+	type19()
 }
 
 func basic1() {

From 3075dcc43cf588eb3bba3aad551b993292d8e778 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Sun, 9 Feb 2020 14:31:51 +0700
Subject: [PATCH 20/25] Fix #33 - https://tour.golang.org/moretypes/20-21

---
 sidik/moretypes_20.go | 20 ++++++++++++++++++++
 sidik/moretypes_21.go | 16 ++++++++++++++++
 sidik/sidik.go        |  2 ++
 3 files changed, 38 insertions(+)
 create mode 100644 sidik/moretypes_20.go
 create mode 100644 sidik/moretypes_21.go

diff --git a/sidik/moretypes_20.go b/sidik/moretypes_20.go
new file mode 100644
index 0000000..d4ed66f
--- /dev/null
+++ b/sidik/moretypes_20.go
@@ -0,0 +1,20 @@
+package sidik
+
+import "fmt"
+
+type Vertex4 struct{
+	Lat, Long float64
+}
+
+var mn = map[string]Vertex4{
+	"Bell Labs" : Vertex4{
+		40.68433, -74.39967,
+	},
+	"Google Inc" : Vertex4{
+		37.42202, -122.08408,
+	},
+}
+
+func type20() {
+	fmt.Println(mn)
+}
\ No newline at end of file
diff --git a/sidik/moretypes_21.go b/sidik/moretypes_21.go
new file mode 100644
index 0000000..553680f
--- /dev/null
+++ b/sidik/moretypes_21.go
@@ -0,0 +1,16 @@
+package sidik
+
+import "fmt"
+
+type Vertex5 struct {
+	Lat, Long float64
+}
+
+var maa = map[string]Vertex5{
+	"Bell Labs": {40.68433, -74.39967},
+	"Google Inc" : {37.42202, -122.08408},
+}
+
+func type21() {
+	fmt.Println(maa)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 2c9730d..f169267 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -57,6 +57,8 @@ func Main() {
 	type17()
 	// type18()
 	type19()
+	type20()
+	type21()
 }
 
 func basic1() {

From 800cc02ddef2b139f6cc1251a15607c35471c87d Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Sun, 9 Feb 2020 14:39:27 +0700
Subject: [PATCH 21/25] Fix #33 - https://tour.golang.org/moretypes/22

---
 sidik/moretypes_22.go | 19 +++++++++++++++++++
 sidik/sidik.go        |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 sidik/moretypes_22.go

diff --git a/sidik/moretypes_22.go b/sidik/moretypes_22.go
new file mode 100644
index 0000000..e4f8acf
--- /dev/null
+++ b/sidik/moretypes_22.go
@@ -0,0 +1,19 @@
+package sidik
+
+import "fmt"
+
+func type22() {
+	mm := make(map[string]int)
+
+	mm["Answer"] = 42
+	fmt.Println("The Value: ", mm["Answer"])
+
+	mm["Answer"] = 48
+	fmt.Println("The Value: ", mm["Answer"])
+
+	delete(mm, "Answer")
+	fmt.Println("The Value: ", mm["Answer"])
+
+	v, ok := mm["Answer"]
+	fmt.Println("The Value: ", v ,"Present", ok)
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index f169267..74d696c 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -59,6 +59,7 @@ func Main() {
 	type19()
 	type20()
 	type21()
+	type22()
 }
 
 func basic1() {

From a0ea9972c205b33680770a912801a32a6762c1dc Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Sun, 9 Feb 2020 16:33:21 +0700
Subject: [PATCH 22/25] Fix #33 - https://tour.golang.org/moretypes/23-24

---
 sidik/moretypes_18.go | 16 +++++++++-------
 sidik/moretypes_23.go | 13 +++++++++++++
 sidik/moretypes_24.go | 21 +++++++++++++++++++++
 sidik/sidik.go        |  2 ++
 4 files changed, 45 insertions(+), 7 deletions(-)
 create mode 100644 sidik/moretypes_23.go
 create mode 100644 sidik/moretypes_24.go

diff --git a/sidik/moretypes_18.go b/sidik/moretypes_18.go
index 230eeef..16e640a 100644
--- a/sidik/moretypes_18.go
+++ b/sidik/moretypes_18.go
@@ -1,11 +1,13 @@
 package sidik
 
-// import "golang.org/x/tour/pic"
+import (
+	"golang.org/x/tour/pic"
+)
 
-// func Pic(dx, dy int) [][]uint8 {
-// 	return x*y
-// }
+func Pic(dx, dy int) [][]uint8 {
+		return dx, dy
+}
 
-// func type18() {
-// 	pic.Show(Pic)
-// }
\ No newline at end of file
+func type18() {
+	pic.Show(Pic)
+}
\ No newline at end of file
diff --git a/sidik/moretypes_23.go b/sidik/moretypes_23.go
new file mode 100644
index 0000000..b9927c4
--- /dev/null
+++ b/sidik/moretypes_23.go
@@ -0,0 +1,13 @@
+package sidik
+
+import (
+	"golang.org/x/tour/wc"
+)
+
+func WordCount(s string) map[string]int {
+	return map[string]int{s: 1}
+}
+
+func type23() {
+	wc.Test(WordCount)
+}
\ No newline at end of file
diff --git a/sidik/moretypes_24.go b/sidik/moretypes_24.go
new file mode 100644
index 0000000..9b60c2b
--- /dev/null
+++ b/sidik/moretypes_24.go
@@ -0,0 +1,21 @@
+package sidik
+
+import (
+	"fmt"
+	"math"
+)
+
+func compute(fn func(float64, float64) float64) float64 {
+	return fn(3, 4)
+}
+
+func type24() {
+	hypot := func (x, y float64) float64 {
+		return math.Sqrt(x*x + y*y)
+	}
+
+	fmt.Println(hypot(5, 12))
+
+	fmt.Println(compute(hypot))
+	fmt.Println(compute(math.Pow))
+}
\ No newline at end of file
diff --git a/sidik/sidik.go b/sidik/sidik.go
index 74d696c..c1b2841 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -60,6 +60,8 @@ func Main() {
 	type20()
 	type21()
 	type22()
+	// type23()
+	type24()
 }
 
 func basic1() {

From 202983487b84d70caaf2460522479f5e99f1f12e Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Tue, 11 Feb 2020 11:30:22 +0700
Subject: [PATCH 23/25] Fix #33 - https://tour.golang.org/moretypes/18

---
 sidik/moretypes_18.go | 10 +++++++++-
 sidik/sidik.go        |  4 +++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/sidik/moretypes_18.go b/sidik/moretypes_18.go
index 16e640a..7a00622 100644
--- a/sidik/moretypes_18.go
+++ b/sidik/moretypes_18.go
@@ -5,7 +5,15 @@ import (
 )
 
 func Pic(dx, dy int) [][]uint8 {
-		return dx, dy
+	sdx := make([][]uint8, dx)
+	for y := 0; y < dy; y++ {
+		sdy := make([]uint8, dy)
+		for x := 0; x < dx; x++ {
+			sdy[x] = uint8((x+y)*4)
+		}
+		sdx[y] = sdy
+	}
+	return sdx
 }
 
 func type18() {
diff --git a/sidik/sidik.go b/sidik/sidik.go
index c1b2841..ac0f30f 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -1,5 +1,7 @@
 package sidik
 
+/* بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيم */
+
 import "fmt"
 import "math"
 
@@ -55,7 +57,7 @@ func Main() {
 	type15()
 	type16()
 	type17()
-	// type18()
+	type18()
 	type19()
 	type20()
 	type21()

From cc76b5a652b6b7322acc99e68c067aeb85f1f2d0 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Wed, 12 Feb 2020 13:31:46 +0700
Subject: [PATCH 24/25] Fix #33 - https://tour.golang.org/moretypes/23

---
 sidik/moretypes_23.go | 6 +++---
 sidik/sidik.go        | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sidik/moretypes_23.go b/sidik/moretypes_23.go
index b9927c4..786db1c 100644
--- a/sidik/moretypes_23.go
+++ b/sidik/moretypes_23.go
@@ -1,13 +1,13 @@
 package sidik
 
-import (
+import (	
 	"golang.org/x/tour/wc"
 )
 
 func WordCount(s string) map[string]int {
-	return map[string]int{s: 1}
+	return map[string]int{"learning": 1}
 }
 
 func type23() {
 	wc.Test(WordCount)
-}
\ No newline at end of file
+}
diff --git a/sidik/sidik.go b/sidik/sidik.go
index ac0f30f..e3b599b 100644
--- a/sidik/sidik.go
+++ b/sidik/sidik.go
@@ -62,7 +62,7 @@ func Main() {
 	type20()
 	type21()
 	type22()
-	// type23()
+	type23()
 	type24()
 }
 

From 8b26ba24a881517a724c588cc81a5ccc70d3c486 Mon Sep 17 00:00:00 2001
From: Muhammad Sidik <pasker.shinigami@gmail.com>
Date: Sat, 15 Feb 2020 13:53:13 +0700
Subject: [PATCH 25/25] Fix #33 - https://tour.golang.org/moretypes/23

---
 sidik/moretypes_23.go | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/sidik/moretypes_23.go b/sidik/moretypes_23.go
index 786db1c..b7b76b3 100644
--- a/sidik/moretypes_23.go
+++ b/sidik/moretypes_23.go
@@ -1,11 +1,20 @@
 package sidik
 
-import (	
+import (
+	"strings"
+
 	"golang.org/x/tour/wc"
 )
 
 func WordCount(s string) map[string]int {
-	return map[string]int{"learning": 1}
+	words := strings.Fields(s)
+		result := make(map[string]int)
+
+		for _, word := range words{
+			result[word] += 1
+		}
+
+		return result
 }
 
 func type23() {