---
title: singleValueContainer()
framework: swift
role: symbol
role_heading: Instance Method
path: swift/encoder/singlevaluecontainer()
---

# singleValueContainer()

Returns an encoding container appropriate for holding a single primitive value.

## Declaration

```swift
func singleValueContainer() -> any SingleValueEncodingContainer
```

## Return Value

Return Value A new empty single value container.

## Discussion

Discussion You must use only one kind of top-level encoding container. This method must not be called after a call to unkeyedContainer() or container(keyedBy:), or after encoding a value through a call to singleValueContainer()