WeakAssoc [1007503]

17
LINES

< > BotCompany Repo | #1007503 // WeakAssoc

JavaX fragment (include)

// uses identity to compare a and new value
static class WeakAssoc<A, B> {
  O f; // func(A) -> B
  WeakReference<A> a;
  B b;
  
  *() {}
  *(O *f) {}

  synchronized B get(A a) {
    if (a != (this.a != null ? this.a.get() : null)) {
      b = (B) callF(f, a);
      this.a = new WeakReference(a);
    }
    ret b;
  }
}

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Snippet ID:	#1007503
Snippet name:	WeakAssoc
Eternal ID of this version:	#1007503/3
Text MD5:	9cc877571b659caa2e3bdc91e1023637
Author:	stefan
Category:	javax
Type:	JavaX fragment (include)
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2017-03-25 17:28:57
Source code size:	338 bytes / 17 lines
Pitched / IR pitched:	No / No
Views / Downloads:	557 / 1772
Version history:	2 change(s)
Referenced in:	[show references]

1	// uses identity to compare a and new value
2	static class WeakAssoc<A, B> {
3	O f; // func(A) -> B
4	WeakReference<A> a;
5	B b;
6
7	*() {}
8	(O f) {}
9
10	synchronized B get(A a) {
11	if (a != (this.a != null ? this.a.get() : null)) {
12	b = (B) callF(f, a);
13	this.a = new WeakReference(a);
14	}
15	ret b;
16	}
17	}