doc: fix codewalk/markov.go
When I build it, I got:
/home/njubee/work/golang/doc/codewalk/markov.go:124: undefined: time.Nanoseconds
time.Nanoseconds() does not exist now, use time.Now().UnixNano() instead
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/5668044
diff --git a/doc/codewalk/markov.go b/doc/codewalk/markov.go
index cb28eb0..a8f322e 100644
--- a/doc/codewalk/markov.go
+++ b/doc/codewalk/markov.go
@@ -120,8 +120,8 @@
numWords := flag.Int("words", 100, "maximum number of words to print")
prefixLen := flag.Int("prefix", 2, "prefix length in words")
- flag.Parse() // Parse command-line flags.
- rand.Seed(time.Nanoseconds()) // Seed the random number generator.
+ flag.Parse() // Parse command-line flags.
+ rand.Seed(time.Now().UnixNano()) // Seed the random number generator.
c := NewChain(*prefixLen) // Initialize a new Chain.
c.Build(os.Stdin) // Build chains from standard input.
