Programming Groovy 2

6.3 Using Finder Methods

We know how to iterate over a collection and perform operations on each element. However, if we want to search for a particular element, ​each​ or ​collect​ is not convenient. Instead, we should use ​find​ , like so:

lst = [4, 3, 1, 2, 4, 1, 8, 9, 2, 6]

println lst.find { it == 2 }

The code picks up the first element, which equals ​2​, as we see from the output:

2

In this code, we’re looking for an object that matches value ​2​ in the collection. ​find​ gets the first occurrence of the matching object. In this case, it returns the object at position ​3​. Just like the ​each​ method, the ​find​ method iterates over the collection, but only until the closure returns a ​true​. On ...