Libraryless. Click here for Pure Java version (2121L/14K).
1 | static <A, B> Pair<B, Bool> syncGetOrCreate2(Map<A, B> map, A key, Class<? extends B> c) ctex {
|
2 | synchronized(map) {
|
3 | B b = map.get(key); |
4 | if (b == null) {
|
5 | map.put(key, b = c.newInstance()); |
6 | ret pair(b, true); |
7 | } |
8 | ret pair(b, false); |
9 | } |
10 | } |
11 | |
12 | static <A, B> Pair<B, Bool> nuLike syncGetOrCreate2(Class<? extends B> c, Map<A, B> map, A key) {
|
13 | ret syncGetOrCreate2(map, key, c); |
14 | } |
15 | |
16 | static <A, B> Pair<B, Bool> syncGetOrCreate2(Map<A, B> map, A key, F0<B> f) ctex {
|
17 | synchronized(map) {
|
18 | B b = map.get(key); |
19 | if (b == null) {
|
20 | map.put(key, b = callF(f)); |
21 | ret pair(b, true); |
22 | } |
23 | ret pair(b, false); |
24 | } |
25 | } |
26 | |
27 | static <A, B> Pair<B, Bool> syncGetOrCreate2(Map<A, B> map, A key, IF0<B> f) ctex {
|
28 | synchronized(map) {
|
29 | B b = map.get(key); |
30 | if (b == null) {
|
31 | map.put(key, b = f!); |
32 | ret pair(b, true); |
33 | } |
34 | ret pair(b, false); |
35 | } |
36 | } |
Began life as a copy of #1013935
download show line numbers debug dex old transpilations
Travelled to 6 computer(s): bhatertpkbcr, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tvejysmllsmz, vouqrxazstgt
No comments. add comment
| Snippet ID: | #1024132 |
| Snippet name: | syncGetOrCreate2 - map lookup or create from class, return whether key is new |
| Eternal ID of this version: | #1024132/4 |
| Text MD5: | 63323f5d15568fd073aa3e5c52f674a9 |
| Transpilation MD5: | f6f1e8d270ff17c4f6801c3d0455ae01 |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2019-09-08 15:47:33 |
| Source code size: | 926 bytes / 36 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 258 / 365 |
| Version history: | 3 change(s) |
| Referenced in: | [show references] |