[TYPO3-core] RFC: #7891: Docheader Class with Hook for dynamic change of docheaders

[Martin Kutschker]

Tapio Markula schrieb:
> 
> I put 'foo' because good configuration might have '' and
> it is not possible to test using boolean test because '' gives false.
> In this case value '' could *not* be used as default value,
> because the parameter is not necessarily needed and value ''
> would cause incorrect configuration.

I use NULL in such cases.

Masi