From d1a26a5d92a7bca1b5b367a14f1eede994ce42a5 Mon Sep 17 00:00:00 2001
From: Johannes Rothe <mail@johannes-rothe.de>
Date: Sat, 12 Feb 2022 00:22:02 +0100
Subject: [PATCH] maps, interfaces, structs

---
 interfaces/go.mod       |  3 +++
 interfaces/main.go      | 29 +++++++++++++++++++++++++++++
 interfaces_http/go.mod  |  3 +++
 interfaces_http/main.go | 16 ++++++++++++++++
 map/go.mod              |  3 +++
 map/main.go             | 28 ++++++++++++++++++++++++++++
 structs/main.go         |  2 +-
 7 files changed, 83 insertions(+), 1 deletion(-)
 create mode 100644 interfaces/go.mod
 create mode 100644 interfaces/main.go
 create mode 100644 interfaces_http/go.mod
 create mode 100644 interfaces_http/main.go
 create mode 100644 map/go.mod
 create mode 100644 map/main.go

diff --git a/interfaces/go.mod b/interfaces/go.mod
new file mode 100644
index 0000000..5ede8e6
--- /dev/null
+++ b/interfaces/go.mod
@@ -0,0 +1,3 @@
+module interfaces
+
+go 1.17
diff --git a/interfaces/main.go b/interfaces/main.go
new file mode 100644
index 0000000..593591f
--- /dev/null
+++ b/interfaces/main.go
@@ -0,0 +1,29 @@
+package main
+
+import "fmt"
+
+type bot interface {
+	getGreeting() string
+}
+
+type englishBot struct{}
+type spanishBot struct{}
+
+func main() {
+	eb := englishBot{}
+	sb := spanishBot{}
+	printGreeting(eb)
+	printGreeting(sb)
+}
+
+func printGreeting(b bot) {
+	fmt.Println(b.getGreeting())
+}
+
+func (englishBot) getGreeting() string {
+	return "Hi there!"
+}
+
+func (spanishBot) getGreeting() string {
+	return "Hola!"
+}
diff --git a/interfaces_http/go.mod b/interfaces_http/go.mod
new file mode 100644
index 0000000..b53fa37
--- /dev/null
+++ b/interfaces_http/go.mod
@@ -0,0 +1,3 @@
+module interfaces_http
+
+go 1.17
diff --git a/interfaces_http/main.go b/interfaces_http/main.go
new file mode 100644
index 0000000..4f34616
--- /dev/null
+++ b/interfaces_http/main.go
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+)
+
+func main() {
+	resp, err := http.Get("https://google.com")
+	if err != nil {
+		fmt.Println("Error!")
+		os.Exit(1)
+	}
+	fmt.Println(resp)
+}
diff --git a/map/go.mod b/map/go.mod
new file mode 100644
index 0000000..be693fe
--- /dev/null
+++ b/map/go.mod
@@ -0,0 +1,3 @@
+module map
+
+go 1.17
diff --git a/map/main.go b/map/main.go
new file mode 100644
index 0000000..83b0759
--- /dev/null
+++ b/map/main.go
@@ -0,0 +1,28 @@
+package main
+
+import "fmt"
+
+func main() {
+	// Method 1
+	//var colors map[string]string
+
+	// Method2
+	//colors := make(map[string]string)
+
+	colors := map[string]string{
+		"red":   "#ff0000",
+		"green": "#gr0000",
+		"white": "#fffff",
+	}
+
+	//colors["white"] = "#ffffff"
+
+	//delete(colors, "white")
+	printMap(colors)
+}
+
+func printMap(c map[string]string) {
+	for color, hex := range c {
+		fmt.Println("Hex code for", color, "is", hex)
+	}
+}
diff --git a/structs/main.go b/structs/main.go
index 03ef969..415886d 100644
--- a/structs/main.go
+++ b/structs/main.go
@@ -22,7 +22,7 @@ func main() {
 			zipCode: 1234,
 		},
 	}
-	(&person1).updateName("asd")
+	person1.updateName("asd")
 	person1.print()
 }