Sum of Array List In groovy

Question

I have an Array List in groovy in below format. I want the sum of integer values in this list.

[ {"value":1}, {"value":1}, {"value":10}, {"value":11}, {"value":12}]

Expected Output

1+1+10+11+12=35 

Answer 1

Oh it's very easy.

list.value.sum()

Answer 2

I would prefer using the Groovy Spread Operator.

The Spread Operator (*.) is used to invoke an action on all items of an aggregate object.

Specific to your question, the best way coding the desired result is:

list*.value.sum()

The difference is only a * but it is best practice to use the language correctly.