Ruby 保证无错误初始化的更好方法

我的初始化随机失败

实现init的更好方法是什么

请至少重试10次

我找到了这样的解决办法

begin  
  coll.insert( { "counter" => i, "named" => "name#{i}" })
rescue Mongo::ConnectionFailure => ex  
  sleep(0.5)
  coll.insert( { "counter" => i, "named" => "name#{i}" })
end  

---

有什么优雅的方法可以做到这一点吗？因为我需要在我的项目中的许多地方执行类似的init，所以您可以将连接逻辑提取到另一个方法并执行以下操作

connections = 0
while connections < 10 # or however many
  begin
    try_connecting
    break # only called when no error raised
  rescue Mongo::ConnectionFailure => ex
    connections += 1
    sleep(0.5)
  end
end

---

按积木或产量计算，它能更优雅吗？我不认为积木是优雅的。它们很有用，并提供额外的定制，但这里不需要它们。我已经用另一次尝试更新了答案

connections = 0
while connections < 10 # or however many
  begin
    try_connecting
    break # only called when no error raised
  rescue Mongo::ConnectionFailure => ex
    connections += 1
    sleep(0.5)
  end
end

def connect
  try_connecting
rescue Mongo::ConnectionFailure => ex
  fail = true
  sleep(0.5)
ensure
  return defined?(fail)
end

10.times { break unless connect }