Method set_len

src/arrayvec.rs:937–954

(&mut self, new_len: usize)

  ///   regarding what you find in the inactive portion of the vec.
  #[inline(always)]
  pub fn set_len(&mut self, new_len: usize) {
    if new_len > A::CAPACITY {
      // Note(Lokathor): Technically we don't have to panic here, and we could
      // just let some other call later on trigger a panic on accident when the
      // length is wrong. However, it's a lot easier to catch bugs when things
      // are more "fail-fast".
      panic!(
        "ArrayVec::set_len> new length {} exceeds capacity {}",
        new_len,
        A::CAPACITY
      )
    }

    let new_len: u16 = new_len
      .try_into()
      .expect("ArrayVec::set_len> new length is not in range 0..=u16::MAX");
    self.len = new_len;
  }

  /// Splits the collection at the point given.
  ///