Learn how to eliminate a whole class of possible user interface mistakes by modifying your API design, making it impossible to even express incorrect usage.
Tag: user input
Episode #434: Scanf
Today we learn how to match patterns and parse out values all at once.
Episode #431: Exceptional Value
In this sequel to #430, we apply a powerful pattern for encapsulating problem values.
Episode #401: Whole Value
In this episode, we address the Primitive Obsession code smell with a lesser-known design pattern.
Episode #338: Error Value
Picking up where we left off in #337, today we look at how to add extra information to an error flag value, in a backwards-compatible way.
Episode #307: Command Loop
In this episode we'll build a simple command-prompt loop in Ruby.
Episode #058: ARGF
This episode explores ARGF, a powerful object for working with input files in command-line programs.