2 ms·
Might have got it from Java (either the Guava library or Java 8 http://docs.oracle.com/javase/8/docs/api/java/util/Optional.html http://docs.oracle.com/javase/8
by scanr 12y ago
Might have got it from Java (either the Guava library or Java 8 http://docs.oracle.com/javase/8/docs/api/java/util/Optional.html http://docs.oracle.com/javase/8/docs/api/java/util/Optional....)