fmt.Errorf("parsing %s as HTML: %v", url, err)gopl book says:
Because error messages are frequently chained together, message strings should not be capitalized and newlines should be avoided.
log.Fatalf("Site is down: %v\n", err)slice, kvs := []int{...}, map[string]string{...}
for _, num := range nums {} // if idx not needed
for i, num := range nums {}
for k, v := range kvs {}
for k := range kvs {} // just keys
for i, c := range "go" {} // 'c' is 'rune' of the string// Fprint formats using the default formats for its operands and writes to w.
// Spaces are added between operands when neither is a string.
// It returns the number of bytes written and any write error encountered.
func Fprint(w io.Writer, a ...interface{}) (n int, err error) {gopl book says:
Go doc comments are always complete sentences, and the first sentence is usually a summary that starts with the name being declared.