AutoCreateList - create elements on get() [1031199]

< > BotCompany Repo | #1031199 // AutoCreateList - create elements on get()

JavaX fragment (include) [tags: use-pretranspiled]

Transpiled version (2778L) is out of date.

persistable sclass AutoCreateList<A> extends RandomAccessAbstractList<A> {
  new L<A> list;
  IF1<Int, A> createElement; // optional, takes index and produces element
  
  *(IF1<Int, A> *createElement) {}
  *(IF0<A> createElement) { this(if0ToIF1(createElement)); }
  *(Class<? extends A> elementClass) { this(classToIF0(elementClass)); }
  
  public int size() { ret list.size(); }
  public A get(int i) {
    while (i >= size())
      list.add(createElement?.get(i));
    ret list.get(i);
  }
  
  public A set(int i, A a) {
    ret list.set(i, a);
  };
  
  public bool add(A a) { ret list.add(a); }
}

Author comment

Began life as a copy of #1031197

Travelled to 4 computer(s): bhatertpkbcr, mqqgnosmbjvj, pyentgdyhuwx, vouqrxazstgt

Snippet ID:

#1031199

Snippet name:

AutoCreateList - create elements on get()

Eternal ID of this version:

#1031199/4

Text MD5:

db70952f6df36e89789aa50f997a15de

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2021-10-18 00:15:16

Source code size:

624 bytes / 21 lines

Pitched / IR pitched:

No / No

Views / Downloads:

207 / 387

Version history:

3 change(s)

Referenced in:

[show references]

1	persistable sclass AutoCreateList<A> extends RandomAccessAbstractList<A> {
2	new L<A> list;
3	IF1<Int, A> createElement; // optional, takes index and produces element
4
5	(IF1<Int, A> createElement) {}
6	*(IF0<A> createElement) { this(if0ToIF1(createElement)); }
7	*(Class<? extends A> elementClass) { this(classToIF0(elementClass)); }
8
9	public int size() { ret list.size(); }
10	public A get(int i) {
11	while (i >= size())
12	list.add(createElement?.get(i));
13	ret list.get(i);
14	}
15
16	public A set(int i, A a) {
17	ret list.set(i, a);
18	};
19
20	public bool add(A a) { ret list.add(a); }
21	}