1 | static class DerivedMap<A, B> extends AbstractMap<A, B> {
|
2 | Map<A, B> base; |
3 | Map<A, B> additions = new HashMap; |
4 | |
5 | *() {}
|
6 | *(Map<A, B> *base) {}
|
7 | *(Map<A, B> *base, Map<A, B> *additions) {}
|
8 | |
9 | public B get(Object key) {
|
10 | B b = additions.get(key); |
11 | if (b != null) return b; |
12 | return base.get(key); |
13 | } |
14 | |
15 | public B put(A key, B value) {
|
16 | return additions.put(key, value); |
17 | } |
18 | |
19 | public Set<Map.Entry<A,B>> entrySet() {
|
20 | throw fail(); |
21 | } |
22 | } |
Began life as a copy of #1001027
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| Snippet ID: | #1017455 |
| Snippet name: | class DerivedMap - base map + additions |
| Eternal ID of this version: | #1017455/3 |
| Text MD5: | ce3a0bfc02a4e07881e809726c307818 |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2018-07-22 13:41:28 |
| Source code size: | 485 bytes / 22 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 313 / 881 |
| Version history: | 2 change(s) |
| Referenced in: | [show references] |