The following module was proposed for inclusion in the Module List:
modid: Readonly
DSLIP: bdprp
description: Create read-only scalars, arrays, hashes.
userid: ROODE (Eric J. Roode)
chapterid: 2 (Perl_Core_Modules)
communities:
RPI lily
similar:
constant.pm
rationale:
The built-in "use constant" pragma creates only scalars and lists;
creates variables that have no leading $ or @ characters; creates
only global variables. The variables it creates cannot be used as
perl variable work-alikes in many ways (cannot be interpolated into
strings; cannot take a reference to them). Also, it works only at
compile time.
Readonly.pm, by contrast, creates scalars, arrays, and hashes;
these can be global or lexical; can be initialized at runtime; can
be used as any other perl variables (except that they cannot be
modified).
Readonly.pm uses tied variables, so there is a performance penalty
as compared to "use constant," but I believe it makes a useful
complement to the pragma.
enteredby: ROODE (Eric J. Roode)
enteredon: Fri Mar 15 18:44:36 2002 GMT
The resulting entry would be:
Readonly bdprp Create read-only scalars, arrays, hashes. ROODE
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