Not able to get a value from yml file in groovy - groovy

Question

I have stored an entire yaml file into a Map yamlConfig which i am able to print and check.
The Output when I run the code: yamlConfig.each{ k, v -> println "${k}:${v}" } is:
Host:localhost
Port:10000
application:[name:ABC, preferences:[UUID:d3f3278e, server:localhost:2222]]
services:[[name:XYZ, instances:1, start:true]]
dataSets:[[name:ABC], [name:XYZ]]
Now, I am trying to fetch a value from Map using following code:
println yamlConfig.get("services").getAt("name")
However, I am getting the value: [XYZ]. Instead I need the result as XYZ, without square brackets.
Yml file I am using:
Host: localhost
Port: 10000
application:
name: ABC
preferences:
UUID: d3f3278e
server: localhost:2222
services:
- name: XYZ
instances: 1
start: true
data:
- name: ABC
- name: XYZ

Answer 1

This is because of the - character placed before your name property. It makes the yaml parser treat what's inside the services section as an array.
When you ask for the name property doing yamlConfig['services']['name'] groovy gives you all the macthing properties of array items in the services array, and it can only return them in another array.
So either remove the - or use yamlConfig['services'][0]['name'].

Answer 2

yamlConfig.get("services")
return a list but not a service, therefore when you apply getAt to the returned list of services it returns a list of names.
yamlConfig.get("services").getAt('name')
actually does
yaml['services'].collect { it['name'] }
so in order to get a name of a certain service you need to do something like this:
println yaml['services'][0]['name']