Groovy Goodness: Getting All But the Last Element in a Collection with Init Method
Groovy Goodness: Getting All But the Last Element in a Collection with Init Method
Join the DZone community and get the full member experience.
Join For FreeHow do you break a Monolith into Microservices at Scale? This ebook shows strategies and techniques for building scalable and resilient microservices.
In Groovy we can use the head and tail methods for a long time on Collection objects. With head we get the first element and with tailthe remaining elements of a collection. Since Groovy 2.4 we have a new method init which returns all elements but the last in a collection.
In the following example we have a simple list and apply the different methods:
def gr8Tech = ['Groovy', 'Grails', 'Spock', 'Gradle', 'Griffon'] // Since Groovy 2.4 we can use the init method. assert gr8Tech.init() == ['Groovy', 'Grails', 'Spock', 'Gradle'] assert gr8Tech.last() == 'Griffon' assert gr8Tech.head() == 'Groovy' assert gr8Tech.tail() == ['Grails', 'Spock', 'Gradle', 'Griffon']
Code written with Groovy 2.4.
How do you break a Monolith into Microservices at Scale? This ebook shows strategies and techniques for building scalable and resilient microservices.
Like This Article? Read More From DZone
Published at DZone with permission of Hubert Klein Ikkink , DZone MVB. See the original article here.
Opinions expressed by DZone contributors are their own.
{{ parent.title || parent.header.title}}
{{ parent.tldr }}
{{ parent.linkDescription }}
{{ parent.urlSource.name }}