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-rw-r--r--go/octal/octal.go15
1 files changed, 15 insertions, 0 deletions
diff --git a/go/octal/octal.go b/go/octal/octal.go
new file mode 100644
index 0000000..89b1cfc
--- /dev/null
+++ b/go/octal/octal.go
@@ -0,0 +1,15 @@
+package octal
+
+import "errors"
+
+func ParseOctal(s string) (int64, error) {
+ var ret int64
+ for _, v := range s {
+ if v < '0' || v > '7' {
+ return 0, errors.New("invalid chars")
+ }
+ ret *= 8
+ ret += int64(v - '0')
+ }
+ return ret, nil
+}