parsing - Is there any benefit to wrapping a bufio.Scanner's reader in a bufio.Reader? -

i'm using bufio.scanner, , i'm not sure if should giving reader wrapped bufio.reader.

i.e., f os.file, should i:

scanner := bufio.newscanner(f) 

or

scanner := bufio.newscanner(bufio.newreader(f)) 

from the scan.go source doesn't need pass *bufio.reader: has own buffer, defaulting 4k bufio.reader's buffers do.

// newscanner returns new scanner read r. // split function defaults scanlines. func newscanner(r io.reader) *scanner {     return &scanner{         r:            r,         split:        scanlines,         maxtokensize: maxscantokensize,         buf:          make([]byte, 4096), // plausible starting size; needn't large.     } }