blob: 19b9d90f567b2c78818b7175abe33f8baf0d67fc (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/*
* esodata - data structures and other things, of varying utility
* Copyright 2022, Ben Culkin
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package bjc.data;
import java.util.Iterator;
/**
* An iterator that will only ever yield one item.
*
* @author EVE
*
* @param <T>
* The type of the item.
*/
public class SingleIterator<T> implements Iterator<T> {
/* The item being held. */
private final T itm;
/* Whether we've yielded the item yet. */
private boolean yielded;
/**
* Create a iterator that yields a single item.
*
* @param item
* The item to yield.
*/
public SingleIterator(final T item) {
itm = item;
yielded = false;
}
@Override
public boolean hasNext() {
return !yielded;
}
@Override
public T next() {
yielded = true;
return itm;
}
}
|
