Download Learning Perl Student Workbook by brian d foy PDF

By brian d foy

If you’re a programmer, procedure administrator, or net hacker simply getting began with Perl, this workbook is helping you achieve hands-on event with the language immediately. It’s the ideal better half to the sixth variation of studying Perl (known as “the Llama”), that is in response to the preferred introductory Perl path taught through the book’s authors considering that 1991.

The first 1/2 this workbook provides the workouts, with solutions within the moment part. the cloth covers Perl as much as model 5.14.

Topics include:

  • Scalar Data
  • Lists and Arrays
  • Subroutines
  • Input and Output
  • Hashes
  • Regular Expressions
  • Control Structures
  • Perl Modules
  • File Tests
  • Directory Operations
  • Strings and Sorting
  • Smart Matching
  • Process Management
  • Some complicated Perl Techniques
  • Databases

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Sample text

4. Using a foreach loop, go through the numbers from 1 to 10 and print their squares and cubes. Use the range operator to create the list of numbers. 5. Starting with the array @numbers that contains a list of numbers, use a while loop and shift to print the squares and cubes of the numbers in the list. 6. , works with more than just numbers. Use the range operator to create a list of only the lowercase letters then a list of only the uppercase letters. Can you create a list of only the upper and lowercase letters together, and can you do it with only one range operator?

Modify the program to set the modification time of the files to the current system time. 2 to check the results. 1. Write a program to read lines of input and report the position of the first mention of “perl” on each line. Use index to find the substring. 2. Write a program to read lines of input and report the position of the last “e” in the line. Use rindex. 3. Write a program that takes a starting column value, an ending column, and a filename. Go through the lines of the file and print only the portions of each line from the start column to the end column.

Use rindex. 3. Write a program that takes a starting column value, an ending column, and a filename. Go through the lines of the file and print only the portions of each line from the start column to the end column. Use substr to get the right part of the string. 4. Write a program to print a list of the files in the current directory, sorted in order of their ascending file size. Change the program to make it list the files in order of descending file size. 5. Write a program to print a list of the files in the current directory, sorted in order of their last modification line.

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