From c4c5b129c347c26ac659708b3c0346ff96436972 Mon Sep 17 00:00:00 2001
From: rsteube <rsteube@users.noreply.github.com>
Date: Mon, 9 Oct 2023 23:00:08 +0200
Subject: [PATCH] Action: added FilterF

---
 action.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/action.go b/action.go
index b833e15a2..8ed5c5f18 100644
--- a/action.go
+++ b/action.go
@@ -94,6 +94,20 @@ func (a Action) Filter(values ...string) Action {
 	})
 }
 
+func (a Action) FilterF(f func(s ...string) bool) Action {
+	return ActionCallback(func(c Context) Action {
+		invoked := a.Invoke(c)
+		filtered := make(common.RawValues, 0)
+		for _, v := range invoked.rawValues {
+			if f(v.Value) {
+				filtered = append(filtered, v)
+			}
+		}
+		invoked.rawValues = filtered
+		return invoked.ToA()
+	})
+}
+
 // FilterArgs filters Context.Args
 func (a Action) FilterArgs() Action {
 	return ActionCallback(func(c Context) Action {