initial

1 files changed, 12 insertions, 0 deletions

diff --git a/helpers.go b/helpers.go
new file mode 100644
index 0000000..a842899
--- /dev/null
+++ b/helpers.go
@@ -0,0 +1,12 @@
+package lexpr
+
+import "context"
+
+func (l *Lexpr) OneResult(ctx context.Context, expression string) (any, error) {
+	select {
+	case r := <-l.Eval(ctx, expression):
+		return r.Value, r.Error
+	case <-ctx.Done():
+		return nil, nil
+	}
+}