Java 8 Lambda Consuming using numerous times a piece of information with one iteration

Question

I build a small example to test the java 8. Having a list of Strings:

List<String> list = Arrays.asList(new String[] { "Sheep", "Ship","Skeleton" });

The following function:

list.stream().forEach(name -> list.forEach(name2->System.out.println("Name2:"+name2+" name:" + name + "=>" + name2.compareTo(name))));

returns the comparison between name2 and name1.

I am trying to test and I don't know if it is feasible this scenario: Having the same list and an independent String variable called lastFoundWord can I assign with a "lambda way" the variable just right after the comparison as it happens with the previous line ?

Note:I see that forEach can not accept a list of Consumers, and Consumer building is very strict. I am not sure about the "Function" interface. All my thought directs me to iterate twice the same information.

Is there perhaps a forEach function that accepts a list of Consumers and I missed it ?

could you not create a consumer that would dispatch to all the consumers you need to? — vandale, May 07 '15 at 14:16
That or you could do on your list of consumers: `list.stream().reduce((a,b) -> a.andThen(b))` to produce a single consumer. — vandale, May 07 '15 at 14:24

score 1 · Answer 1 · edited May 08 '15 at 07:29

1

Using consumers from a list is something I try to figure.

Although for my current example, I found a solution using braces. So the code turned to that:

list.stream().forEach(name -> list.forEach(name2 -> {
    System.out.println("Name2:" + name2 + " name:" + name + "=>" + name2.compareTo(name));
    lastName = name2;
}));

edited May 08 '15 at 07:29

John Saunders

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answered May 08 '15 at 07:04

hephestos

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Java 8 Lambda Consuming using numerous times a piece of information with one iteration

1 Answers1