golangHow to get map keys
package main
func main() {
mp := make(map[string]string)
mp["name"] = "Joe"
mp["position"] = "president"
keys := make([]string, 0, len(mp))
for k := range mp {
keys = append(keys, k)
}
}ctrl + cpackage maindefault package declaration | make(map[string]string)initialize map with string keys and string values |
mp["name"]set value of | len(returns length of a given map |
keysslice will contain list of all map keys | append(keys, k)append each key from |
Usage example
package main
func main() {
mp := make(map[string]string)
mp["name"] = "Joe"
mp["position"] = "president"
keys := make([]string, 0, len(mp))
for k := range mp {
keys = append(keys, k)
}
print(keys[0])
print(keys[1])
}output
nameposition