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Sams Teach Yourself Perl in 21 Days, Second Edition by Rafe Colburn, Laura Lemay

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Workshop

The workshop provides quiz questions to help you solidify your understanding of the material covered and exercises to give you experience in using what you've learned. Try and understand the quiz and exercise answers before you go on to tomorrow's lesson.

Quiz

1:What is a block? What can you put inside a block?
A1: A block is a group of other Perl statements (which can include other blocks) surrounded by curly braces ({}). Blocks are most commonly used in conjunction with conditionals and loops, but can also be used on their own (bare blocks).
2:What's the difference between an if and an unless?
A2: The difference between and if and an unless is in the test: an if statement executes its block if the test returns true; unless executes ...

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