我有一个出生日期的数组,该数组从Facebook获取填充,因此有一些朋友的出生日期是私有的,因此它包含NULL。如何将该数组转换为在空值处添加空字符串?该数组如下所示:
"<null>",
"10/29/1988",
"11/13",
"03/24/1987",
"04/25/1990",
"03/13",
"01/01",
"<null>",
"12/15/1905",
"07/10",
"11/02/1990",
"12/30/1990",
"<null>",
"07/22/1990",
"01/01",
"07/17/1989",
"08/28/1990",
"01/10/1990",
"06/12/1990",