[DOC PATCH] was Re: things deprecated for removal in 5.12

[perl5.git] / pod / perlvar.pod

diff --git a/pod/perlvar.pod b/pod/perlvar.pod
index b2f1484..6e62a10 100644 (file)
--- a/pod/perlvar.pod
+++ b/pod/perlvar.pod
@@ -58,14 +58,14 @@ the change may affect other modules which rely on the default values
 of the special variables that you have changed. This is one of the
 correct ways to read the whole file at once:
 
-    open my $fh, "foo" or die $!;
+    open my $fh, "<", "foo" or die $!;
     local $/; # enable localized slurp mode
     my $content = <$fh>;
     close $fh;
 
 But the following code is quite bad:
 
-    open my $fh, "foo" or die $!;
+    open my $fh, "<", "foo" or die $!;
     undef $/; # enable slurp mode
     my $content = <$fh>;
     close $fh;
@@ -81,7 +81,7 @@ inside some short C<{}> block, you should create one yourself. For
 example:
 
     my $content = '';
-    open my $fh, "foo" or die $!;
+    open my $fh, "<", "foo" or die $!;
     {
         local $/;
         $content = <$fh>;
@@ -148,18 +148,24 @@ don't use it:
 
 =item *
 
-Various unary functions, including functions like ord() and int(), as well
-as the all file tests (C<-f>, C<-d>) except for C<-t>, which defaults to
-STDIN.
+The following functions:
+
+abs, alarm, chomp, chop, chr, chroot, cos, defined, eval, exp, glob,
+hex, int, lc, lcfirst, length, log, lstat, mkdir, oct, ord, pos, print,
+quotemeta, readlink, readpipe, ref, require, reverse (in scalar context only),
+rmdir, sin, split (on its second argument), sqrt, stat, study, uc, ucfirst, 
+unlink, unpack.
 
 =item *
 
-Various list functions like print() and unlink().
+All file tests (C<-f>, C<-d>) except for C<-t>, which defaults to STDIN.
+See L<perlfunc/-X>
+
 
 =item *
 
-The pattern matching operations C<m//>, C<s///>, and C<tr///> when used
-without an C<=~> operator.
+The pattern matching operations C<m//>, C<s///> and C<tr///> (aka C<y///>)
+when used without an C<=~> operator.
 
 =item *
 
@@ -172,6 +178,10 @@ The implicit iterator variable in the grep() and map() functions.
 
 =item *
 
+The implicit variable of given().
+
+=item *
+
 The default place to put an input record when a C<< <FH> >>
 operation's result is tested by itself as the sole criterion of a C<while>
 test.  Outside a C<while> test, this will not happen.
@@ -433,7 +443,7 @@ instead of lines, with the maximum record size being the referenced
 integer.  So this:
 
     local $/ = \32768; # or \"32768", or \$var_containing_32768
-    open my $fh, $myfile or die $!;
+    open my $fh, "<", $myfile or die $!;
     local $_ = <$fh>;
 
 will read a record of no more than 32768 bytes from FILE.  If you're
@@ -469,7 +479,8 @@ buffered otherwise.  Setting this variable is useful primarily when
 you are outputting to a pipe or socket, such as when you are running
 a Perl program under B<rsh> and want to see the output as it's
 happening.  This has no effect on input buffering.  See L<perlfunc/getc>
-for that.  (Mnemonic: when you want your pipes to be piping hot.)
+for that.  See L<perldoc/select> on how to select the output channel. 
+See also L<IO::Handle>. (Mnemonic: when you want your pipes to be piping hot.)
 
 =item IO::Handle->output_field_separator EXPR
 
@@ -780,7 +791,7 @@ variable, or in other words, if a system or library call fails, it
 sets this variable.  This means that the value of C<$!> is meaningful
 only I<immediately> after a B<failure>:
 
-    if (open(FH, $filename)) {
+    if (open my $fh, "<", $filename) {
        # Here $! is meaningless.
        ...
     } else {