July 2015
Intermediate to advanced
380 pages
10h 15m
English
book
Learn C the Hard Way: Practical Exercises on the Computational Subjects You Keep Avoiding (Like C)
by Zed A. Shaw
Content preview from Learn C the Hard Way: Practical Exercises on the Computational Subjects You Keep Avoiding (Like C)Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
Exercise 38. Hashmap Algorithms
There are three hash functions that you’ll implement in this exercise:
FNV-1a Named after the creators Glenn Fowler, Phong Vo, and Landon Curt Noll, this hash produces good numbers and is reasonably fast.
Adler-32 Named after Mark Adler, this is a horrible hash algorithm, but it’s been around a long time and it’s good for studying.
DJB Hash This hash algorithm is attributed to Dan J. Bernstein (DJB), but it’s difficult to find his discussion of the algorithm. It’s shown to be fast, but possibly not great numbers.
You’ve already seen the Jenkins hash as the default hash for the Hashmap data structure, so this exercise will be looking at these three new hash functions. The code for them is usually small, and it’s ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.