Summary
Only sets the new metadata value if a value doesn't already exist.
The default behavior is to set the new value regardless.
- Assembly
- Wyam
.Core .dll - Namespace
- Wyam
.Core .Modules .Metadata - Containing Type
- Meta
Syntax
public Meta OnlyIfNonExisting(bool onlyIfNonExisting = true)Parameters
| Name | Type | Description |
|---|---|---|
| onlyIfNonExisting | bool | true if the new value should only be set if it doesn't already exist. |
Return Value
| Type | Description |
|---|---|
| Meta | The current module instance. |