✨ updates

docs/filter.md

@@ -40,10 +40,10 @@ This filter would match all of these objects:
 ```
 but not:
 ```json
-{ "key": "Lol"}
+{ "key": "lol"}
 ```
 
-## Operators
+## Logical Operators
 ### `$and`
 Chain multiple filters together. All must evaluate to `true`
 ```json
@@ -72,6 +72,7 @@ Inverts the result of the nested filter expression.
 { "$not": { "key": "value" }}
 ```
 
+## Comparison Operators
 ### `$lt` & `$lte`
 Evaluates to `true` if the value is less than or less than equal the specified value.
 ```json
@@ -90,7 +91,10 @@ Evaluates to `true` if the value is not equal to the specified value.
 { "key": { "$ne": "value" }}
 ```
 
-### `$in`
+> **Note**: The `$eq` operator is implicit. Example: `{ "key": "value" }`
+
+## Array / Object Operators
+### `$in` & `$contains`
 Evaluates to `true` if the value exists in the specified array.
 ```json
 { "array": { "$in": "value" }}
@@ -115,12 +119,20 @@ Evaluates to `true` if the array length matches the specified value
 { "array": { "$size": 5 }}
 ```
 
+## Text Operators
 ### `$regex`
 Evaluates to `true` if the value matches the regular expression pattern.
 ```json
 { "key": { "$regex": "^regex" }}
 ```
 
+### `$contains`
+Evaluates to `true` if the value contains the text.
+```json
+{ "key": { "$contains": "text" }}
+```
+
+## Misc Operators
 ### `$type`
 Evaluates to `true` if the value matches the specified type.
 ```json
@@ -130,4 +142,11 @@ Evaluates to `true` if the value matches the specified type.
 { "key": { "$type": "object" }}
 { "key": { "$type": "array" }}
 { "key": { "$type": "boolean" }}
-```
+```
+
+### `$range`
+Evaluates to `true` if the value is within the specified range. This operator is actually just syntactic sugar for `let filter = json!({"$and": [{"key": {"$gte": x}}, {"key": {"$lte": y}}]});`.
+
+```json
+{"key": { "$range": [x, y] }}
+```