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author | Father Chrysostomos <sprout@cpan.org> | 2011-02-10 14:35:57 -0800 |
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committer | Father Chrysostomos <sprout@cpan.org> | 2011-02-10 14:35:57 -0800 |
commit | cfa5b3737e4f46c2d507630650f9d3e902d8f81d (patch) | |
tree | b4b320ee743020eec02e46705b93f1a6ddc2114a /lib/overload.pm | |
parent | dc04e1e9e5625cc5319a68130165b381dfd4c6fa (diff) | |
download | perl-cfa5b3737e4f46c2d507630650f9d3e902d8f81d.tar.gz |
Relation between overloading and ties: second try
The current text is confusing as it refers to tied values. Variables, not values, are tied (don’t bring up handles, please!).
Diffstat (limited to 'lib/overload.pm')
-rw-r--r-- | lib/overload.pm | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/lib/overload.pm b/lib/overload.pm index c538177265..3abde68b78 100644 --- a/lib/overload.pm +++ b/lib/overload.pm @@ -1522,7 +1522,8 @@ package C<symbolic>. Add methods sub FETCH { shift } sub nop { } # Around a bug -(the bug is described in L<"BUGS">). One can use this new interface as +(the bug, fixed in Perl 5.14, is described in L<"BUGS">). One can use this +new interface as tie $a, 'symbolic', 3; tie $b, 'symbolic', 4; @@ -1678,17 +1679,18 @@ from two overloaded packages. =item * -Relation between overloading and tie()ing is broken. Overloading is -triggered or not basing on the I<previous> class of tie()d value. +Before Perl 5.14, the relation between overloading and tie()ing was broken. +Overloading is triggered or not basing on the I<previous> class of the +tie()d variable. -This happens because the presence of overloading is checked too early, -before any tie()d access is attempted. If the FETCH()ed class of the -tie()d value does not change, a simple workaround is to access the value +This happened because the presence of overloading was checked +too early, before any tie()d access was attempted. If the +class of the value FETCH()ed from the tied variable does not +change, a simple workaround for code that is to run on older Perl +versions is to access the value (via C<() = $foo> or some such) immediately after tie()ing, so that after this call the I<previous> class coincides with the current one. -B<Needed:> a way to fix this without a speed penalty. - =item * Barewords are not covered by overloaded string constants. |