Groovy: Remove all the elements from the map

'clear' method is used to remove all the elements from the map.

HelloWorld.groovy

def countryCapitals = ["India" : "new Delhi", "Australia" : "Canberra"]

printMap(countryCapitals)

println "\nClearing all the elements of the map\n"

countryCapitals.clear()

printMap(countryCapitals)

void printMap(map){
 println "Size : ${map.size()}"
 
 map.eachWithIndex {entry, i -> 
  println "$i : CountryName: $entry.key, Capital: $entry.value"
 }
}

Output

Size : 2

0 : CountryName: India, Capital: new Delhi

1 : CountryName: Australia, Capital: Canberra

Clearing all the elements of the map

Size : 0

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