Perl Programming/Modifiers

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In addition to the basic control structures, Perl allows the use of statement modifiers. The statement modifier is placed at the end of the statement that it modifies. Note that the do {…} until (…) and do {…} while (…) loop constructs are actually statement modifiers. The complete list of modifiers is:

  • statement if expression
  • statement unless expression
  • statement while expression
  • statement until expression
  • statement foreach list

Unlike BASIC-PLUS, statement modifiers in Perl cannot be stacked.

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