defaultclosed

Defaultclosed is a term used in software development to describe a default state for a resource, component, or feature where it remains closed or inactive unless explicitly opened or activated. It may appear as a naming convention for flags, configuration options, or documented behavior.

In code, a defaultclosed state is typically implemented as a boolean flag or an enumerated state assigned at initialization. For example, a UI panel might initialize with isOpen = false; a network or file access control might keep a resource closed by default. The concept emphasizes that no action is required to maintain the closed state, but an explicit action is required to transition to open.

Common domains include user interface components (dialogs that start closed), network or file systems with access controls (resources inaccessible until permissions are granted), and feature flags (features disabled by default). In configuration management, defaultclosed constrains behavior unless a user or administrator opt-ins.

Advantages include reduced surface area for unintended access, lower resource usage, and a clearer security posture. Potential drawbacks include user confusion if not well documented, and the need for explicit initialization to avoid lingering closed state.

The term is not part of a formal standard and is largely found in project-specific documentation or informal discussions. Similar concepts appear under terms like defaultOpen, enabled/disabled, or access control defaults.