July 2015
Intermediate to advanced
286 pages
6h 31m
English
Content preview from Mazes for Programmers
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ASCII Masks
Imagine if we could “draw” our masks in a separate file and feed that file to our program. We could play with all kinds of designs, without having to change our program at all! Let’s make that happen, using simple text files as input. The text files will be formatted something like the following, which shows one possible definition of a 10×10 grid.
| mask.txt | |
| | X........X |
| | ....XX.... |
| | ...XXXX... |
| | ....XX.... |
| | X........X |
| | X........X |
| | ....XX.... |
| | ...XXXX... |
| | ....XX.... |
| | X........X |
Every “X” indicates an “off” cell, and anything else (the “.” characters, in this case) will be an “on” cell.
We’ll implement this by introducing a helper method on our Mask class. Open mask.rb and add the following just after the start of that class, before ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.