Added arn to the main repository

arn/CollectionUtils.go

@@ -0,0 +1,52 @@
+package arn
+
+// IndexOf ...
+func IndexOf(collection []string, t string) int {
+	for i, v := range collection {
+		if v == t {
+			return i
+		}
+	}
+	return -1
+}
+
+// Contains ...
+func Contains(collection []string, t string) bool {
+	return IndexOf(collection, t) >= 0
+}
+
+// func Any(collection []string, f func(string) bool) bool {
+// 	for _, v := range collection {
+// 		if f(v) {
+// 			return true
+// 		}
+// 	}
+// 	return false
+// }
+
+// func All(collection []string, f func(string) bool) bool {
+// 	for _, v := range collection {
+// 		if !f(v) {
+// 			return false
+// 		}
+// 	}
+// 	return true
+// }
+
+// func Filter(collection []string, f func(string) bool) []string {
+// 	vsf := make([]string, 0)
+// 	for _, v := range collection {
+// 		if f(v) {
+// 			vsf = append(vsf, v)
+// 		}
+// 	}
+// 	return vsf
+// }
+
+// func Map(collection []string, f func(string) string) []string {
+// 	vsm := make([]string, len(collection))
+// 	for i, v := range collection {
+// 		vsm[i] = f(v)
+// 	}
+// 	return vsm
+// }