7.2 Perl 4
Most easily recognized by the absence of:
There were many, many other things added in Perl 5—such as BEGIN and END blocks, the /x modifier on regular expressions—but the preceding are going to be your major markers.
This code is likely to contain more uses of eval(), do(), local(), and typeglobs (*) than you would see in Perl 5 programs.
7.2.1 Upgrading to Perl 4
There being no prior versions of Perl I wish to consider for this purpose, this section is intentionally left blank.
|