Collection Design FAQ

[Remi Forax]

On September 23, 2016 8:13:36 AM GMT+02:00, Kasper Nielsen <kasperni at gmail.com> wrote:
>Hi,
>
>I accidently bumped into an old friend today
>https://docs.oracle.com/javase/8/docs/technotes/guides/collections/designfaq.html
>There are couple of questions that might need an update after Java 8.

>Such
>as
>
>Why don't you provide an "apply" method in Collection to apply a given
>method ("upcall") to all the elements of the Collection?

Take a look to Iterable.forEach

>Why didn't you provide a "Predicate" interface, and related methods
>(e.g.,
>a method to find the first element in the Collection satisfying the
>predicate)?

predicate => java.util.function.Predicate

col.stream ().filter(predicate).findFirst ()
(or findAny())

it's on Stream because you can choose if you want a parallel operation or not.

>
>Best
>  Kasper

Remi


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