#!/usr/bin/perl

# begincheck

print         "10. Ordinary code runs at runtime.\n";

END { print   "16.   So this is the end of the tale.\n" }
INIT { print  " 7. INIT blocks run FIFO just before runtime.\n" }
UNITCHECK {
print       " 4.   And therefore before any CHECK blocks.\n"
}
CHECK { print " 6.   So this is the sixth line.\n" }

print         "11.   It runs in order, of course.\n";

BEGIN { print " 1. BEGIN blocks run FIFO during compilation.\n" }
END { print   "15.   Read perlmod for the rest of the story.\n" }
CHECK { print " 5. CHECK blocks run LIFO after all compilation.\n" }
INIT { print  " 8.   Run this again, using Perl's -c switch.\n" }

print         "12.   This is anti-obfuscated code.\n";

END { print   "14. END blocks run LIFO at quitting time.\n" }
BEGIN { print " 2.   So this line comes out second.\n" }
UNITCHECK {
print " 3. UNITCHECK blocks run LIFO after each file is compiled.\n"
}
INIT { print  " 9.   You'll see the difference right away.\n" }

print         "13.   It merely _looks_ like it should be confusing.\n";

__END__
 1. BEGIN blocks run FIFO during compilation.
 2.   So this line comes out second.
 3. UNITCHECK blocks run LIFO after each file is compiled.
 4.   And therefore before any CHECK blocks.
 5. CHECK blocks run LIFO after all compilation.
 6.   So this is the sixth line.
 7. INIT blocks run FIFO just before runtime.
 8.   Run this again, using Perl's -c switch.
 9.   You'll see the difference right away.
10. Ordinary code runs at runtime.
11.   It runs in order, of course.
12.   This is anti-obfuscated code.
13.   It merely _looks_ like it should be confusing.
14. END blocks run LIFO at quitting time.
15.   Read perlmod for the rest of the story.
16.   So this is the end of the tale.