JarCastingCollections utilities used in various Yandex projects.
- Package contains utilities that are
- unrelated to Yandex
- generic enough so that they are useful in the most project
- functional
Install
<dependency>
<groupId>ru.yandex</groupId>
<artifactId>bolts</artifactId>
<version>1.0.6</version>
</dependency>
Usage
Cf
Cf.map();
Cf.hashMap();
Cf.list();
Cf.arrayList();
Cf.linkedList();
Cf.set();
Cf.hashSet();
Option
Option<Integer> some = Option.some(1);
assert some.isDefined() == true;
assert some.isEmpty() == false;
assert some.get() == 1;
Option<Integer> none = Option.none();
assert none.isDefined() == false;
assert some.isEmpty() == true;
ListF
Cf.list(1, 2, 3, 16).map(i -> i * i);
[1, 4, 9, 16]
Cf.list(1, 2, 3, 4).filter(i -> i % 2 == 0);
[2, 4]