Confusing example for PVector copy() method

Select the type of content error.

Other content error (please specify)

Section

Examples

Location of the error

https://processing.org/reference/PVector_copy_.html

Describe the error

In the documentation for the copy() method of the PVector class, the following code example is given:

PVector v1, v2;

void setup() {
  size(100, 100);
  v1 = new PVector(20.0, 30.0, 40.0);
  v2 = new PVector();
  v2 = v1.copy();
  ...

While not a factual error, it seems curious to me that v2 would be instantiated as a new PVector only to be assigned the result of v1.copy(). If .copy() creates a returns a new PVector object, then the initial assignment would have no effect. This led to some confusion amongst my students who had various incorrect assumptions about how .copy() works given the example code.

Suggested correction

PVector v1, v2;

void setup() {
  size(100, 100);
  v1 = new PVector(20.0, 30.0, 40.0);
  v2 = v1.copy();
  ...

Language

No response

Screenshots or references

No response

Additional context

No response

Issue にリンクされている PVector copy() のリファレンスページから始め、その Examples セクションを見つけてください。例のオブジェクト初期化とコピー代入を確認し、その後、冗長な初期化を行わないように例を更新してください。変更後に、レンダリングされたドキュメントの例を確認してください。