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Learning Perl, 5th Edition
book

Learning Perl, 5th Edition

by Randal L. Schwartz, Tom Phoenix, brian d foy
June 2008
Beginner content levelBeginner
352 pages
11h 16m
English
O'Reilly Media, Inc.
Content preview from Learning Perl, 5th Edition

Exercise

See Appendix A for an answer to the following exercise:

  1. [30] Make a program that reads a list of strings from a file, one string per line, and then lets the user interactively enter patterns that may match some of the strings. For each pattern, the program should tell how many strings from the file matched, then which ones those were. Don’t reread the file for each new pattern; keep the strings in memory. The filename may be hardcoded in the file. If a pattern is invalid (for example, if it has unmatched parentheses), the program should simply report that error and let the user continue trying patterns. When the user enters a blank line instead of a pattern, the program should quit. (If you need a file full of interesting strings to try matching, try the file sample_text in the files you’ve surely downloaded by now from the O’Reilly web site; see the Preface.)

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Publisher Resources

ISBN: 9780596520106Supplemental ContentErrata Page