Package net.tangly.commons.lang.functional

Interface Sequence<T>

public interface Sequence<T>

Method Summary

Modifier and Type	Method	Description
Sequence<T>	cons(T item, Sequence<T> sequence)	Construct a new immutable list by addind the new front item to the existing sequence.
T	first()	Return the first element of the sequence.
Sequence<T>	rest()	Return the rest of the sequence witouth the first item of the sequence.

Method Details

first

@Contract(pure=true)
T first()

Return the first element of the sequence.

Returns:

first element of the sequence if defined otherwise Nil

rest

@Contract(pure=true)
Sequence<T> rest()

Return the rest of the sequence witouth the first item of the sequence.

Returns:

rest of the sequence, it can be empty

cons

@Contract(pure=true)
Sequence<T> cons(T item,
 Sequence<T> sequence)

Construct a new immutable list by addind the new front item to the existing sequence.

Parameters:

item - item to add to the sequence

sequence - sequence where the item will be added in the front of the sequence

Returns:

new immutable list