#!/usr/bin/perl     

use strict;
use warnings;

my $class = shift;

eval "use $class";
die $@ if $@;
    
# First, find all the classes, and the ones it inherits.
my %classes = ($class => 1);
my @classes = ($class);
     
while (@classes) {
    my $class = pop @classes;
    no strict 'refs';
    foreach my $class (@{"$class\::ISA"}) {
        next if $classes {$class} ++;
        push @classes => $class;
    }
}

# Then find the subs in those classes.
while (my $class = each %classes) {
    no strict 'refs';
    print "From class '$class':\n";
    while (my $entry = each %{"$class\::"}) {
        print "\t$entry\n" if defined &{"$class\::$entry"};
    }
}   
__END__
[download]

From class 'IO::Seekable':
        sysseek
        setpos
        croak
        confess
        getpos
        carp
        tell
        seek
From class 'IO::File':
        qualify
        new
        confess
        ungensym
        open
        qualify_to_ref
        gensym
        croak
        new_tmpfile
        carp
From class 'IO::Handle':
        qualify
        setvbuf
        format_write
        fcntl
        format_lines_per_page
        print
        sysread
        format_top_name
        input_record_separator
        SEEK_SET
        stat
        confess
        opened
        flush
        eof
        _open_mode_string
        syswrite
        error
        _IONBF
        format_formfeed
        format_page_number
        sync
        truncate
        constant
        croak
        SEEK_CUR
        gets
        carp
        fdopen
        getc
        untaint
        read
        new
        fileno
        clearerr
        write
        format_line_break_characters
        blocking
        format_name
        ungetc
        autoflush
        setbuf
        ioctl
        DESTROY
        ungensym
        _IOFBF
        qualify_to_ref
        _IOLBF
        output_record_separator
        gensym
        close
        getline
        output_field_separator
        printf
        formline
        format_lines_left
        SEEK_END
        printflush
        getlines
        input_line_number
        new_from_fd
From class 'Exporter':
        export_fail
        export_tags
        export_ok_tags
        export
        import
        as_heavy
        require_version
        export_to_level
[download]