This document discusses Scala and related topics. It includes sections on Scala programming, functional programming concepts in Scala using streams and filters, and data visualization tools that can be used with Scala including Apache Zeppelin, Google Data Studio, and Tableau. It also lists several open source streaming and messaging systems that can be used with Scala such as Apache Kafka, Apache Pulsar, and Amazon Kinesis.

1. ! Scala x
ScalaMatsuri2018

2. Who are You ?
LIVEDSP
GitHub: https://github.com/x1-
http://x1.inkenkun.com/
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3. Who are You ?
GitHub: https://github.com/inkenkun
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{"time":"2018-02-12T16:32:50.110
Z","player":" ","speed":
120.3,"x":515.294,"y":
102.540,"z":82.540}

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fluentd

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Apache Pulsar
phaistos-networks/TANK
NATS
Cloud Pub/Sub
Amazon Kinesis
Apache Kafka
Apache Kafka

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{"time":"2018-02-12T16:32:50.110Z","player
":" ","speed":120.3,"pos":{"x":
515.294,"y":102.540,"z":82.540}}
{"time":"2018-02-12T16:32:50.210Z","player
":" ","speed":119.8,"pos":{"x":
926.442,"y":130.206,"z":148.540}}
{"time":"2018-02-12T16:32:50.310Z","player
":" ","speed":119.3,"pos":{"x":
1215.932,"y":157.120,"z":242.540}}
{"time":"2018-02-12T16:32:50.410Z","player
":" ","speed":118.5,"pos":{"x":
1505.125,"y":182.712,"z":126.540}}
{"time":"2018-02-12T16:32:50.510Z","player
":" ","speed":116.4,"pos":{"x":
1824.087,"y":211.917,"z":11.540}}
{“time":"2018-02-12T16:32:50.610Z","player
":" ","speed":116.4,"pos":{"x":
2105.629,"y":246.344,"z":0.540}}
:

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{"time":"2018-02-12T16:32:50.110Z","player":" ","speed":
120.3,"pos":{"x":515.294,"y":102.540,"z":82.540}}
{"time":"2018-02-12T16:32:50.210Z","player":" ","speed":
119.8,"pos":{"x":926.442,"y":130.206,"z":148.540}}
{"time":"2018-02-12T16:32:50.310Z","player":" ","speed":
119.3,"pos":{"x":1215.932,"y":157.120,"z":242.540}}
{"time":"2018-02-12T16:32:50.410Z","player":" ","speed":
118.5,"pos":{"x":1505.125,"y":182.712,"z":126.540}}
{"time":"2018-02-12T16:32:50.510Z","player":" ","speed":
116.4,"pos":{"x":1824.087,"y":211.917,"z":11.540}}
{“time":"2018-02-12T16:32:50.610Z","player":" ","speed":
116.4,"pos":{"x":2105.629,"y":246.344,"z":0.540}}
:
time player speed angle …
2018-02-12T16:32:50.110Z 120.3 210.52
2018-02-12T16:32:50.210Z 119.8 212.30
2018-02-12T16:32:50.310Z 119.3 214.11
: : :

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29. OSS
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JVM
Java Scala
※ Java API Scala Java

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Scala

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f(x) g(x) h(x)

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f(x)
f(x)
f(x)
f(x)
f(x)
f(x)
f(x)
f(x)
f(x)
f(x)
f(x)
A B
Scala

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Scala
(Stream, map, filter, fold, reduce)
Scala Java
Scala

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e p
p e e
e p
Functional Programming in Scala 14
Scala

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13%
time player speed angle …
2018-02-12T16:32:50.110Z 120.3 210.52
2018-02-12T16:32:50.210Z 119.8 212.30
2018-02-12T16:32:50.310Z 119.3 214.11
: : :
15%
17%
3% 2% 5%
5%
30%
10%

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time player speed angle …
2018-02-12T16:32:50.110Z 120.3 210.52
2018-02-12T16:32:50.210Z 119.8 212.30
2018-02-12T16:32:50.310Z 119.3 214.11
: : :

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Google Data Studio
Amazon QuickSight
Microsoft Power BI
Tableau
QlikView
DOMO
Pentaho
Superset
Metabase
Apache Zeppelin
JupyterNotebook(Lab)
Vegas
Lightning
Matplotlib
VisPy
HoloViews
Plotly
D3.js
OSS
Python
Scala
JavaScript

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DEMO

44. Apache Zeppelin: https://zeppelin.apache.org/
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Thank you for listening!