GD0104: The exported property is write-only

Cause

A write-only property is annotated with the [Export] attribute. Write-only properties can’t be exported.

Rule description

Godot doesn’t allow exporting write-only properties.

private int _backingField;
// Write-only properties can't be exported.
[Export]
public int InvalidProperty { set => _backingField = value; }
// This property can be exported because it has both a getter and a setter.
[Export]
public int ValidProperty { get; set; }

How to fix violations

To fix a violation of this rule, make sure the property declares both a getter and a setter, or remove the [Export] attribute.

When to suppress warnings

Do not suppress a warning from this rule. Write-only members can’t be exported so they will be ignored by Godot, resulting in runtime errors.

User-contributed notes

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