qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-26 10:08:23 -07:00
Code Releases Activity

add error case in doc for Index. simplify code slightly.

Browse Source 
R=rsc
DELTA=5  (1 added, 0 deleted, 4 changed)
OCL=27148
CL=27151
This commit is contained in:
Rob Pike 2009-04-07 00:32:16 -07:00
parent a888d4d233
commit 640f3f25dc
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/lib/strings.go
View File

@ -37,14 +37,15 @@ func Count(s, sep string) int {
return n
}
// Index returns the index of the first instance of sep in s.
// Index returns the index of the first instance of sep in s, or -1 if sep is not present in s.
func Index(s, sep string) int {
if sep == "" {
n := len(sep);
if n == 0 {
return 0
}
c := sep[0];
for i := 0; i+len(sep) <= len(s); i++ {
if s[i] == c && (len(sep) == 1 || s[i:i+len(sep)] == sep) {
for i := 0; i+n <= len(s); i++ {
if s[i] == c && (n == 1 || s[i:i+n] == sep) {
return i
}
}