為什么切片帶有負位置值的方法在Ruby中無法正常工作? [英]Why doesn't slicing with negative position values work as expected in Ruby?
直到刷新頁面,Ruby on Rails send_file才起作用? [英]Ruby on Rails send_file doesn't work until i refresh the page?
試圖了解Ruby中的線程。 測試代碼無法正常工作,為什么? [英]Trying to understand Threading in Ruby. Test Code doesn't work as expected, why?