From b266ebeb2d823ab1121672f5e1d99636d511886f Mon Sep 17 00:00:00 2001
From: Jay <admin@trj.tw>
Date: Wed, 16 Jan 2019 15:05:16 +0800
Subject: [PATCH] add SliceIndex func

---
 utils.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/utils.go b/utils.go
index a5d3e6d..0d5ef38 100644
--- 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
+}