Reverse function. Closes #94.

builtin.c

@@ -562,6 +562,7 @@ static const char* const jq_builtins[] = {
   "def to_entries: [keys[] as $k | {key: $k, value: .[$k]}];",
   "def from_entries: map({(.key): .value}) | add;",
   "def with_entries(f): to_entries | map(f) | from_entries;",
+  "def reverse: [.[length - 1 - range(0;length)]];",
 };
 
 

docs/content/3.manual/manual.yml

@@ -718,6 +718,16 @@ sections:
             input: '[1,2,5,3,5,3,1,3]'
             output: ['[1,2,3,5]']
 
+      - title: `reverse`
+        body: |
+          
+          This function reverses an array.
+
+        examples:
+          - program: 'reverse'
+            input: '[1,2,3,4]'
+            output: ['[4,3,2,1]']
+
       - title: `contains`
         body: |