Chapter 5. Loops and Iterators
Much of programming is concerned with repetition. Maybe you want your program to beep 10 times, read lines from a file as long as there are more lines to read, or display a warning until the user presses a key. Ruby provides a number of ways of performing this kind of repetition.
for Loops
In many programming languages, when you want to run a bit of code a certain number of times, you can just put it inside a for loop. In most languages, you give a for loop a variable initialized with a starting value that is incremented by 1 on each turn through the loop until it meets some specific ending value. When the ending value ...
Get The Book of Ruby now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
