BoolOrDefault returns the default value (or false) if input is nil, otherwise returns the referenced value.

DurationOrDefault returns the default value (or 0) if input is nil, otherwise returns the referenced value.

IntOrDefault returns the default value (or 0) if input is nil, otherwise returns the referenced value.

NewBool returns a reference to a bool with given value.

NewBoolOrNil returns nil if input is nil, otherwise returns a clone of the given value.

NewDuration returns a reference to a duration with given value.

NewDurationOrNil returns nil if input is nil, otherwise returns a clone of the given value.

NewInt returns a reference to an int with given value.

NewIntOrNil returns nil if input is nil, otherwise returns a clone of the given value.

NewPullPolicy returns a reference to a pull policy with given value.

NewPullPolicyOrNil returns nil if input is nil, otherwise returns a clone of the given value.

NewString returns a reference to a string with given value.

NewStringOrNil returns nil if input is nil, otherwise returns a clone of the given value.

PullPolicyOrDefault returns the default value (or 0) if input is nil, otherwise returns the referenced value.

StringOrDefault returns the default value (or empty string) if input is nil, otherwise returns the referenced value.

Interval is a specialization of Duration so we can add some helper functions to that.