add package is

1 files changed, 34 insertions, 0 deletions

diff --git a/is/time.go b/is/time.go
new file mode 100644
index 0000000..3aadaf1
--- /dev/null
+++ b/is/time.go
@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2025 Stefan Majewsky <majewsky@gmx.net>
+// SPDX-License-Identifier: Apache-2.0
+
+package is
+
+import "time"
+
+// After(b)(a) is the same as a .After(b).
+func After(rhs time.Time) func(time.Time) bool {
+	return func(lhs time.Time) bool {
+		return lhs.After(rhs)
+	}
+}
+
+// Before(b)(a) is the same as a.Before(b).
+func Before(rhs time.Time) func(time.Time) bool {
+	return func(lhs time.Time) bool {
+		return lhs.Before(rhs)
+	}
+}
+
+// NotAfter(b)(a) is the same as !a.After(b).
+func NotAfter(rhs time.Time) func(time.Time) bool {
+	return func(lhs time.Time) bool {
+		return !lhs.After(rhs)
+	}
+}
+
+// NotBefore(b)(a) is the same as !a.Before(b).
+func NotBefore(rhs time.Time) func(time.Time) bool {
+	return func(lhs time.Time) bool {
+		return !lhs.Before(rhs)
+	}
+}