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Hello my friend perlancar,

you already had the perfect, concise answer by choroba, but let me expand something that can be useful.

 use Module;   <=>  BEGIN { require Module; Module->import( LIST ); }

ikegami on SO explains it in this way:

# use Foo; my $foo = Foo->new(); $foo->do(); # does: 1.Compile 1.Compile use Foo; 2.Execute require Foo; 1.Compile 1. ... 2.Execute 1. ... 3.Execute import Foo; 4.Compile my $foo = Foo->new(); 5.Compile $foo->do(); 2.Execute 1.Execute my $foo = Foo->new(); 2.Execute $foo->do();

Wich unveils the compiletime/runtime dicotomy.

Also very interesting read is Re: RunTime & compile Time Doubt on Perl (many) and the document I always called twelve pillars of wisdom (but i do not remember if it was named this way..) as found in perlmod

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 only _looks_ like it should be confusing.\n" +;

other interesting reads are at your disposal in my bibliotheca


There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re: Assignment and use statement in the same BEGIN block by Discipulus
in thread Assignment and use statement in the same BEGIN block by perlancar

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