Perl Best Practices [Electronic resources] نسخه متنی

B.4. Chapter 5, Variables

• Avoid using non-lexical variables. [Lexical Variables ]

• Don't use package variables in your own development. [Package Variables ]

• If you're forced to modify a package variable, localize it. [Localization ]

• Initialize any variable you localize. [Initialization ]

• use English for the less familiar punctuation variables. [Punctuation Variables ]

• If you're forced to modify a punctuation variable, localize it. [Localizing Punctuation Variables ]

• Don't use the regex match variables. [Match Variables ]

• Beware of any modification via $_. [Dollar-Underscore ]

• Use negative indices when counting from the end of an array. [Array Indices ]

• Take advantage of hash and array slicing. [Slicing ]

• Use a tabular layout for slices. [Slice Layout ]

• Factor large key or index lists out of their slices. [Slice Factoring ]