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Perl 4 used ' as a package name separator when importing packages. Perl 5 provides the same feature but uses :: to separate package names. Use colons rather than single quotation marks to separate packages.

Noncompliant Code Example

Despite being over 15 years old, Perl 5 continues to grow. Much of this growth comes from Perl's practice of assimilating CPAN modules that prove to be popular. Modules that are not part of Perl must be explicitly included to be used by a program, but modules that are part of the core language need not be.

When a module has been assimilated into the language, the original module is still available in CPAN, but its use is deprecated. Do not import deprecated modules. It is perfectly valid to use their features as they are now integrated into the core language.

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This noncompliant code example uses the Perl 4 ' syntax to import an external package. This code does successfully require the package, but because Perl 5 is over 15 years agoold, the Perl 4 syntax has largely been forgotten. Consequently, the code can be seen as confusing or arcane.

Code Block
bgColor #ffcccc lang perl
require DBI'SQL'Nano;

Compliant Solution

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This compliant solution uses Perl 5's :: syntax to import an external package:

Code Block
bgColor #ccccff lang perl
require DBI::SQL::Nano;

Risk Assessment

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Recommendation	Severity	Likelihood	Remediation Cost	Priority	Level
DCL04DCL05-PL	lowLow	improbableImprobable	lowLow	P3P6	L1L2

Automated Detection

Bibliography

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