CODEWITHSUNDEEP
javalambdalambdaj
daverocks
daverocks

Reputation: 2353

Lambdaj: Loop through Map and get the values and put in other Map

I'm new to lambdaj so trying to get more used to it. I want to update this code using lambdaj:

 Passed in parameter Map<String, Device> devices;
 final Map<String, String> resultHash = new HashMap<String, String>();
        for (Device device : devices.values()) {
            result.put(device.getAddress(), device.getName());
        }

Thanks for you help

Upvotes: 1

Views: 1145

Answers (1)

Hiery Nomus
Hiery Nomus

Reputation: 17769

  1. index the devices based on their address, will give you a LambdaMap.
  2. transform the Device values of the LamdbaMap to their names, giving you a LambdaMap.

From the top of my mind:

LambdaCollections.with(devices.values())
    .index(Lambda.on(Device.class).getAddress())
    .convertValues(Lambda.on(Device.class).getName());

Upvotes: 4

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