From b4b2e1217a216bfb8253e0685d844fda0d45eaa7 Mon Sep 17 00:00:00 2001
From: Mike Farah <mikefarah@gmail.com>
Date: Wed, 7 Jul 2021 19:53:33 +1000
Subject: [PATCH] Added another |= example

---
 pkg/yqlib/doc/Assign (Update).md  | 20 +++++++++++++++++++-
 pkg/yqlib/operator_assign_test.go | 10 +++++++++-
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/pkg/yqlib/doc/Assign (Update).md b/pkg/yqlib/doc/Assign (Update).md
index 28983bcf..3cceb25e 100644
--- a/pkg/yqlib/doc/Assign (Update).md	
+++ b/pkg/yqlib/doc/Assign (Update).md	
@@ -28,6 +28,24 @@ a:
   g: foof
 ```
 
+## Double elements in an array
+Given a sample.yml file of:
+```yaml
+- 1
+- 2
+- 3
+```
+then
+```bash
+yq eval '.[] |= . * 2' sample.yml
+```
+will output
+```yaml
+- 2
+- 4
+- 6
+```
+
 ## Update node from another file
 Note this will also work when the second file is a scalar (string/number)
 
@@ -75,7 +93,7 @@ c: fieldC
 ```
 then
 ```bash
-yq eval '(.a, .c) |= "potatoe"' sample.yml
+yq eval '(.a, .c) = "potatoe"' sample.yml
 ```
 will output
 ```yaml
diff --git a/pkg/yqlib/operator_assign_test.go b/pkg/yqlib/operator_assign_test.go
index e9dd7485..a1de311d 100644
--- a/pkg/yqlib/operator_assign_test.go
+++ b/pkg/yqlib/operator_assign_test.go
@@ -36,6 +36,14 @@ var assignOperatorScenarios = []expressionScenario{
 			"D0, P[], (doc)::{a: {g: foof}}\n",
 		},
 	},
+	{
+		description: "Double elements in an array",
+		document:    `[1,2,3]`,
+		expression:  `.[] |= . * 2`,
+		expected: []string{
+			"D0, P[], (doc)::[2, 4, 6]\n",
+		},
+	},
 	{
 		description:    "Update node from another file",
 		subdescription: "Note this will also work when the second file is a scalar (string/number)",
@@ -57,7 +65,7 @@ var assignOperatorScenarios = []expressionScenario{
 	{
 		description: "Updated multiple paths",
 		document:    `{a: fieldA, b: fieldB, c: fieldC}`,
-		expression:  `(.a, .c) |= "potatoe"`,
+		expression:  `(.a, .c) = "potatoe"`,
 		expected: []string{
 			"D0, P[], (doc)::{a: potatoe, b: fieldB, c: potatoe}\n",
 		},