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| -rw-r--r-- | pod/perlfunc.pod | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod index 99acb78572..764deb07a5 100644 --- a/pod/perlfunc.pod +++ b/pod/perlfunc.pod @@ -4718,13 +4718,16 @@ of LIST in the opposite order. In scalar context, concatenates the elements of LIST and returns a string value with all characters in the opposite order. - print reverse <>; # line tac, last line first + print join(", ", reverse "world", "Hello"); # Hello, world - undef $/; # for efficiency of <> - print scalar reverse <>; # character tac, last line tsrif + print scalar reverse "dlrow ,", "olleH"; # Hello, world Used without arguments in scalar context, reverse() reverses C<$_>. + $_ = "dlrow ,olleH"; + print reverse; # No output, list context + print scalar reverse; # Hello, world + This operator is also handy for inverting a hash, although there are some caveats. If a value is duplicated in the original hash, only one of those can be represented as a key in the inverted hash. Also, this has to |