Perl FAQ 1.2: What are perl4 and perl5, are there any differences?
Perl FAQ 1.2
What are perl4 and perl5, are there any differences?
Perl4 and perl5 are different versions of the language. Perl4 was the
previous release, and perl5 is ``Perl: The Next Generation.''
Perl5 is, essentially, a complete rewrite of the perl source code
from the ground up. It has been modularized, object oriented,
tweaked, trimmed, and optimized until it almost doesn't look like
the old code. However, the interface is mostly the same, and
compatibility with previous releases is very high.
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