• Conocimientos básicos del sistema operativo Windows XP o Macintosh X
• Manejo de Internet y correo electrónico
• Inglés básico

• Introduction
  
• Accessing Substrings
  
• Extracting Substrings
  
• Replacing Substrings
  
• Processing a String One Byte at a Time
  
• Reversing a String by Word or Byte
  
• Expanding and Compressing Tabs
  
• Controlling Case
  
• Interpolating Functions and Expressions Within Strings
  
• Trimming Blanks from a String
  
• Generating Comma-Separated Data
  
• Generating Fixed-Width Field Data Records
  
• Parsing Fixed-Width Field Data Records
  
• Taking Strings Apart
  
• Wrapping Text at a Certain Line Length
  
• Storing Binary Data in Strings
  
• Program: Downloadable CSV File

 Unit 2: Numbers

• Introduction
  
• Checking Whether a Variable Contains a Valid Number
  
• Comparing Floating-Point Numbers
  
• Rounding Floating-Point Numbers
  
• Operating on a Series of Integers
  
• Generating Random Numbers Within a Range
  
• Generating Biased Random Numbers
  
• Taking Logarithms
  
• Calculating Exponents
  
• Formatting Numbers
  
• Formatting Monetary Values
  
• Printing Correct Plurals
  
• Calculating Trigonometric Functions
  
• Doing Trigonometry in Degrees, Not Radians
  
• Handling Very Large or Very Small Numbers
  
• Converting Between Bases
  
• Calculating Using Numbers in Bases Other Than Decimal
  
• Finding the Distance Between Two Places

Unit 3: Dates and Times

• Introduction
  
• Finding the Current Date and Time
  
• Converting Time and Date Parts to an Epoch Timestamp
  
• Converting an Epoch Timestamp to Time and Date Parts
  
• Printing a Date or Time in a Specified Format
  
• Finding the Difference of Two Dates
  
• Finding the Difference of Two Dates with Julian Days
  
• Finding the Day in a Week, Month, or Year
  
• Validating a Date
  
• Parsing Dates and Times from Strings
  
• Adding to or Subtracting from a Date
  
• Calculating Time with Time Zones
  
• Accounting for Daylight Savings Time
  
• Generating a High-Precision Time
  
• Generating Time Ranges
  
• Using Non-Gregorian Calendars
  
• Using Dates Outside the Range of an Epoch Timestamp
  
• Program: Calendar

Unit 4: Arrays

• Introduction
  
• Specifying an Array Not Beginning at Element 0
  
• Storing Multiple Elements Per Key in an Array
  
• Initializing an Array to a Range of Integers
  
• Iterating Through an Array
  
• Deleting Elements from an Array
  
• Changing Array Size
  
• Appending One Array to Another
  
• Turning an Array into a String
  
• Printing an Array with Commas
  
• Checking if a Key Is in an Array
  
• Finding the Position of a Value in an Array
  
• Finding Elements That Pass a Certain Test
  
• Finding the Largest or Smallest Valued Element in an Array
  
• Reversing an Array
  
• Sorting an Array
  
• Sorting an Array by a Computable Field
  
• Sorting Multiple Arrays
  
• Sorting an Array Using a Method Instead of a Function
  
• Randomizing an Array
  
• Removing Duplicate Elements from an Array
  
• Applying a Function to Each Element in an Array
  
• Finding the Union, Intersection, or Difference of Two Arrays
  
• Making an Object Act like an Array
  
• Program: Printing a Horizontally Columned HTML Table

 Unit 5: Variables

• Introduction
  
• Avoiding == Versus = Confusion
  
• Establishing a Default Value
  
• Exchanging Values Without Using Temporary Variables
  
• Creating a Dynamic Variable Name
  
• Using Static Variables
  
• Sharing Variables Between Processes
  
• Encapsulating Complex Data Types in a String
  
• Dumping Variable Contents as Strings

 Unit 6: Functions

• Introduction
  
• Accessing Function Parameters
  
• Setting Default Values for Function Parameters
  
• Passing Values by Reference
  
• Using Named Parameters
  
• Creating Functions That Take a Variable Number of
  
• Returning Values by Reference
  
• Returning More Than One Value
  
• Skipping Selected Return Values
  
• Returning Failure
  
• Calling Variable Functions
  
• Accessing a Global Variable Inside a Function
  
• Creating Dynamic Functions

Unit 7: Classes and Objects

• Introduction
  
• Instantiating Objects
  
• Defining Object Constructors
  
• Defining Object Destructors
  
• Implementing Access Control
  
• Preventing Changes to Classes and Methods
  
• Defining Object Stringification
  
• Specifying Interfaces
  
• Creating Abstract Base Classes
  
• Assigning Object References
  
• Cloning Objects
  
• Overriding Property Accesses
  
• Calling Methods on an Object Returned by Another
  
• Aggregating Objects
  
• Accessing Overridden Methods
  
• Using Method Polymorphism
  
• Defining Class Constants
  
• Defining Static Properties and Methods
  
• Controlling Object Serialization
  
• Introspecting Objects
  
• Checking if an Object Is an Instance of a Specific Class
  
• Autoloading Class Files upon Object Instantiation
  
• Instantiating an Object Dynamically
  
• Program: whereis