maps

Author: Simcoderan

10_maps/maps.go

@@ -0,0 +1,78 @@
+package main 
+import ( 
+	"fmt"
+	"maps"
+)
+  
+
+
+
+
+
+//maps->hash,pbjects,dictionary
+func main() {
+	//creating map
+	m:=make(map[string]string)  //[key]value
+
+	//add elments
+	m["name"]="golang"
+	m["area"]="backend"
+
+	//get an element
+	fmt.Println(m["name"],m["area"])
+
+	//if accessing the key which doesnt exists
+	//fmt.Println(m["phone"])     --------output-----empty value(zero value)
+
+	n:=make(map[string]int)
+	n["age"]=30
+	fmt.Println(n["phone"])       // output-0 (zero value according to int type in value)
+
+
+	//can get length of map
+	fmt.Println(len(m))  //---2
+
+
+	//delete from map
+	delete(m,"area")
+	fmt.Println(m)
+
+
+
+	//to empty the whole map
+	//clear(m)
+	//fmt.Println(m)
+
+
+	//without using   make fn we can make map
+	//m:=map[string]int{"phone":40, "phones":3} - |
+//                                                |
+	//check element in map or not or take action  |
+v,ok:=m["price"]                             //   |
+	fmt.Println(v)      //we get values 3        <-
+
+	if ok{
+		fmt.Println("all ok")
+	}else{
+		fmt.Println("not ok")
+	}      ///all ok
+
+
+
+	//to check both maps are equal or not
+
+
+	m1:=map[string]int{"phone":40, "phones":3}
+	
+	m2:=map[string]int{"phone":40, "phones":3}
+
+	fmt.Println(maps.Equal(m1,m2))
+
+
+
+
+
+	
+
+
+}