state
- state TYPE VARLIST
- state VARLIST : ATTRS
- state TYPE VARLIST : ATTRS
state
declares a lexically scoped variable, just likemy
. However, those variables will never be reinitialized, contrary to lexical variables that are reinitialized each time their enclosing block is entered. See Persistent Private Variables in perlsub for details.If more than one variable is listed, the list must be placed in parentheses. With a parenthesised list,
undef
can be used as a dummy placeholder. However, since initialization of state variables in list context is currently not possible this would serve no purpose.state
variables are enabled only when theuse feature "state"
pragma is in effect, unless the keyword is written asCORE::state
. See also feature. Alternately, include ause v5.10
or later to the current scope.