comment on

Sounds good; but, if I add

Internals::SvREADONLY($_, 0);
[download]

to the code I gave above, immediately before the line $_ = 'fred';, I still get:

 1:03 >perl 723_SoPW.pl
literal1
Modification of a read-only value attempted at 723_SoPW.pl line 26.

 1:03 >perl -v

This is perl 5, version 18, subversion 1 (v5.18.1) built for MSWin32-x
+86-multi-thread-64int
...
[download]

Also, where and how can I learn about a feature that is “intentionally-undocumented”? (This is a serious question!)

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re^4: How to safely use $_ in a library function? by Athanasius
in thread How to safely use $_ in a library function? by perl-diddler

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