Groovy: Spread method arguments using spread operator

In Groovy, you can bound the arguments of a method call to a list.

For example, in the below snippet, I defined a function 'sum' that takes two integers and return the sum of two integers. While calling I used the spread operator to bound the list to the method arguments.

int sum(int a, int b){

         return a + b

}

def args1 = [2, 3]

int result1 = sum(*args1)

Find the below working application.

HelloWorld.groovy

int sum(int a, int b){
 println "a : ${a}, b : ${b}"
 return a + b
}

int sum(int a, int b, int c){
 println "a : ${a}, b : ${b}, c : ${c}"
 return a + b + c
}

def args1 = [2, 3]
def args2 = [2, 3, 5]

int result1 = sum(*args1)
int result2 = sum(*args2)

println "result1 : ${result1}"
println "result2 : ${result2}"

Output

a : 2, b : 3

a : 2, b : 3, c : 5

result1 : 5

result2 : 10

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