我有一个包含以下对象的集合:
{
"_id" : ObjectId("57f00cf47958af95dca29c0c"),
"id" : "...",
"threadId" : "...",
"ownerEmail" : "...@...",
"labelIds" : [
...
],
"snippet" : "...",
"historyId" : "35699995",
"internalDate" : "1422773000000",
"headers" : {
"from" : "...@...",
"subject" : "....",
"to" : "...@..."
},
"contents" : {
"html" : "...."
}
}
在访问对象时,我想按iternalDate值对它们进行排序,该值应该是整数,但它是字符串.即使这些是字符串,在获取时是否有方法对它们进行排序?按字母顺序?或者有没有一种方法可以毫不费力地将它们转换为整数?