[问题类型]:
程式咨询
[问题叙述]:
想要使用gsub 把"-"取代成"/"，若是单纯想要取代成"/"该如何写!谢谢
[程式范例]:
> gsub("\\-", "\\\\", "2016-07-16 17:11:07")
[1] "2016\\07\\16 17:11:07"
> gsub("\\-", "\\\", "2016-07-16 17:11:07")
Error: unexpected numeric constant in "gsub("\\-", "\\\", "2016"
[关键字]:
gsub
选择性，也许未来有用

escape character

or use exact matching: fixed = TRUE

gsub("\\-", "\\'\'", "2016-07-16 17:11:07")更正 gsub("\\'-'", "\\'\'", "2016-07-16 17:11:07")但strftime 接 strptime 在时间资料格式转换比较常用吧

gsub("\\'-'", "\\'\'", "2016-07-16 17:11:07") 无法耶

gsub("-", "\\/", "2016-07-16 17:11:07")