February 2018
Intermediate to advanced
110 pages
1h 32m
English
Content preview from Ruby Data Processing: Using Map, Reduce, and SelectBecome 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,
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Index
A, B, C, D, E
Data sets
area code
denormalize
list of names
lookup policy data
sliding averages
uniq()
Debugging
map
reduce
select
F, G, H
FizzBuzz
I, J, K, L
Intersection points
clusters
functions
map()
M, N, O
Map
description
list of names
name bar
names to CSV
odd cubes
random list of names
sequence of sales
P, Q
Pascal’s triangle
Postfix/reverse polish notation
command line
stack
Pythagoras Theorem
R
Reduce
list of names
max
memo/element
name bar
names to CSV
odd cubes
random list of names
reverse
sequence of sales
uniq
Reverse-engineering
Pascal’s triangle
Ruby
arrays
block-passing syntax
command line
compact()
flatten()
hash
object
pop
push()
reading files
shift
string
interpolation
join()
split()
unshift()
S, T, U, V, W, X, Y, Z
Select
description
list of names
name bar
names to CSV
odd cubes
random list ...
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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.
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.