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os: clarify that File.{Read,Write} use the buffer

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Fixes #49470

Change-Id: I81fd4b0e2eef1d8d430b5d1d10c4f824e803a75c
Reviewed-on: https://go-review.googlesource.com/c/go/+/362335
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2021-11-08 18:30:30 -08:00
parent 8c20584a82
commit f48115c650
1 changed files with 2 additions and 2 deletions
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4
src/os/file.go
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@ -109,7 +109,7 @@ func (e *LinkError) Unwrap() error {
return e.Err
}
// Read reads up to len(b) bytes from the File.
// Read reads up to len(b) bytes from the File and stores them in b.
// It returns the number of bytes read and any error encountered.
// At end of file, Read returns 0, io.EOF.
func (f *File) Read(b []byte) (n int, err error) {
@ -166,7 +166,7 @@ type onlyWriter struct {
io.Writer
}
// Write writes len(b) bytes to the File.
// Write writes len(b) bytes from b to the File.
// It returns the number of bytes written and an error, if any.
// Write returns a non-nil error when n != len(b).
func (f *File) Write(b []byte) (n int, err error) {