发布时间: 2019-03-16 07:45:00
参考:https://www.codecademy.com/en/forum_questions/50fe886f68fc44056f00626c
require 'bigdecimal' require 'bigdecimal/util'
0.28.to_d * 100
nil.to_d => 0.0
''.to_d => 0.0
"abc".to_d => 0.0