Integrate with perlio. (No changes, but that's okay.)

[p5sagit/p5-mst-13.2.git] / pod / perlfaq4.pod

diff --git a/pod/perlfaq4.pod b/pod/perlfaq4.pod
index 0196407..19066f4 100644 (file)
--- a/pod/perlfaq4.pod
+++ b/pod/perlfaq4.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq4 - Data Manipulation ($Revision: 1.8 $, $Date: 2001/11/09 08:06:04 $)
+perlfaq4 - Data Manipulation ($Revision: 1.9 $, $Date: 2001/12/07 21:17:58 $)
 
 =head1 DESCRIPTION
 
@@ -136,15 +136,13 @@ functions is that it works with numbers of ANY size, that it is
 optimized for speed on some operations, and for at least some
 programmers the notation might be familiar.
 
-=over 4
-
 =item B<How do I convert Hexadecimal into decimal:>
 
 Using perl's built in conversion of 0x notation:
 
     $int = 0xDEADBEEF;
     $dec = sprintf("%d", $int);
-
+ 
 Using the hex function:
 
     $int = hex("DEADBEEF");
@@ -249,7 +247,6 @@ Using Bit::Vector:
 The remaining transformations (e.g. hex -> oct, bin -> hex, etc.)
 are left as an exercise to the inclined reader.
 
-=back
 
 =head2 Why doesn't & work the way I want it to?
 
@@ -1638,13 +1635,13 @@ worry you, you can always reverse the hash into a hash of arrays instead:
 =head2 How can I know how many entries are in a hash?
 
 If you mean how many keys, then all you have to do is
-take the scalar sense of the keys() function:
+use the keys() function in a scalar context:
 
-    $num_keys = scalar keys %hash;
+    $num_keys = keys %hash;
 
-The keys() function also resets the iterator, which in void context is
-faster for tied hashes than would be iterating through the whole 
-hash, one key-value pair at a time.
+The keys() function also resets the iterator, which means that you may 
+see strange results if you use this between uses of other hash operators 
+such as each().
 
 =head2 How do I sort a hash (optionally by value instead of key)?
 
@@ -1852,7 +1849,7 @@ in L<perltoot>.
 
 =head2 How can I use a reference as a hash key?
 
-You can't do this directly, but you could use the standard Tie::RefHash
+You can't do this directly, but you could use the standard Tie::Refhash
 module distributed with Perl.
 
 =head1 Data: Misc