```{index} single: clear_placeholders; Hash::Util function ``` ```{index} single: Hash::Util::clear_placeholders; Perl function ``` # clear_placeholders Strip all hidden placeholder entries from a hash. ## Synopsis ```perl Hash::Util::_clear_placeholders(%hash); ``` Intended for internal use by `Hash::Util` itself when preparing a hash for a new lock cycle. The leading underscore marks it as unsupported for application code - its behaviour may change without notice.