R language 之 class, mode, str, summary

大四上學期,上了杜老的R語言課~
以下做了class, str, summary的紀錄~

> mydata
[1] "My name is Charlie Chao."
[2] "My lab is B329."        
[3] "My phone is 09xx-xxx-xxx."

> class(mydata)
[1] "character"

> mode(mydata)
[1] "character"

> str(mydata)
 chr [1:3] "My name is Harry Potter." ...

> summary(mydata)
   Length     Class      Mode
        3 character character