add SliceIndex func

2019-01-16 15:05:16 +08:00 · 2019-01-16 15:05:16 +08:00 · b266ebeb2d
parent b1a8bce041
commit b266ebeb2d
1 changed files with 10 additions and 0 deletions
--- a/utils.go
+++ b/utils.go
@ -169,3 +169,13 @@ func CheckExists(filePath string, allowDir bool) bool {
 	}
 	return true
 }
+
+// SliceIndex -
+func SliceIndex(limit int, predicate func(idx int) bool) int {
+	for i := 0; i < limit; i++ {
+		if predicate(i) {
+			return i
+		}
+	}
+	return -1
+}