`end`与一个或运算符

Question

我正在阅读这样的代码：

def majority_agreed_commit
  current_commit = log_container.last_commit

  current_term_match_indices = match_indices.values.map do |match_index|
    match_index.downto(current_commit).find do |i|
      log_container.term(i) == current_term
    end || current_commit
  end

我不明白这个含义：end || current_commit。有人能帮助我吗？

Answer 1

块

match_index.downto(current_commit).find do |i|
  log_container.term(i) == current_term
end

返回一个值，该值在逻辑上与current_commit相加，结果在最顶层map得出：

match_indices.values.map do |...|
  BLOCK_RESULT || current_commit
end