Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Ruby 2.5: What's New and What's Cool
Search
Bryce "BonzoESC" Kerley
January 15, 2018
Programming
0
45
Ruby 2.5: What's New and What's Cool
Miami Ruby Brigade
Monday, January 15, 2018
Bryce "BonzoESC" Kerley
January 15, 2018
Tweet
Share
More Decks by Bryce "BonzoESC" Kerley
See All by Bryce "BonzoESC" Kerley
Ruby in 2020
bryce
1
73
Rails and the Internet of Things
bryce
1
50
It's Not Ruby, But…
bryce
0
40
docker for rubyists
bryce
0
98
Would You Like To Make A Game?
bryce
0
41
WebSockets and ActionCable
bryce
0
72
How I Learned to Stop Worrying and Like RSpec
bryce
0
66
How Do Computers Even Work?
bryce
1
170
Growing Distributed Systems: Abril Pro Ruby
bryce
0
42
Other Decks in Programming
See All in Programming
Apache Hive 4 on Treasure Data
ryukobayashi
1
450
Fragment Composition of GraphQL
quramy
13
1.6k
大規模Reactアプリのリアーキテクチャ~8万行のTanStack Query移行の軌跡~
kj455
4
1k
2 週間で Twitter Bot を作ってみた
contour_gara
0
810
Native Federation: The Future of Micro Frontends in Angular
manfredsteyer
PRO
0
140
AmperとFleetを使ったAndroidアプリ
yoppie
0
280
Git Rebase
bkuhlmann
11
1.6k
From Spring Boot 2 to Spring Boot 3 with Java 21 and Jakarta EE
ivargrimstad
0
880
Timeline エディター拡張入門
yucchiy
0
280
Milestoner
bkuhlmann
1
420
dbtのドメイン分割による データ基盤の改善とDigdagとの連携
sakama
0
480
はてなにおける CSS Modules、及び CSS Modules に足りないもの / CSS Modules in Hatena, and CSS Modules missing parts
mizdra
7
1k
Featured
See All Featured
Typedesign – Prime Four
hannesfritz
36
2.1k
Side Projects
sachag
451
41k
GraphQLの誤解/rethinking-graphql
sonatard
56
9.3k
Pencils Down: Stop Designing & Start Developing
hursman
117
11k
How GitHub (no longer) Works
holman
305
140k
The Brand Is Dead. Long Live the Brand.
mthomps
49
29k
Producing Creativity
orderedlist
PRO
338
39k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
242
1.2M
YesSQL, Process and Tooling at Scale
rocio
165
13k
The Straight Up "How To Draw Better" Workshop
denniskardys
228
130k
Happy Clients
brianwarren
92
6.4k
What the flash - Photography Introduction
edds
64
11k
Transcript
Ruby 2.5 What's New and What's Cool Miami Ruby Brigade
Monday, January 15, 2018
tl;dr • feature and performance update release • new features
are cool • some stuff is faster • some stdlibs are now default gems • some other bits & bobs have changed
Topics • Intro • Features • Demos • Q&A
https://www.ruby-lang.org/en/news/2017/12/25/ruby-2-5-0-released/
Getting Ruby 2.5 • rbenv • Docker hub • Heroku
• rvm
Running an App? Go for it (With adequate testing)
Maintaining a Library? Know it exists and test with it
do / rescue / end Exception handling in a block
doesn't require begin
https://github.com/bkerley/mastodon/commit/589cdff
Object#yield_self Similar to #tap but it returns the result instead
of the receiver
None
Hash#slice Grabs a sub-hash with the given keys
https://github.com/bkerley/tides_and_currents/commit/bbb8ab78
Hash#transform_keys • Returns a new hash with the keys mapped
to something new
None
Struct.new keyword Struct#new supports keyword arguments now
None
Enumerable#any? #all? #none? #one? threequals Find if members in a
collection threequal some pattern
None
None
Reverse backtraces • Quality of life • On a terminal,
unless you change $stderr, the most recent call is at the bottom instead of a million screens up
None
Topics • Intro • Features • Demos • Q&A
Upgrading Mastodon I decided to make Mastodon work in Ruby
2.5
Mastodon • Twitter-like • Open-source • Federated • Independent nodes
Setup Steps From a new Mastodon checkout on v2.1.3, and
after Development setup steps 1. Update README.md to note that it's a weird research project 2. Remove "< 2.5.0" constraint on Ruby version from Gemfile 3. bundle 4. Some deps also have "< 2.5.0" ruby constraint 5. bundle update
app/models/media_attachment.rb def populate_meta meta = {} file.queued_for_write.each
do |style, file| begin geo = Paperclip::Geometry.from_file file meta[style] = { width: geo.width.to_i, height: geo.height.to_i, size: "#{geo.width.to_i}x#{geo.height.to_i}", aspect: geo.width.to_f / geo.height.to_f, } rescue Paperclip::Errors::NotIdentifiedByImageMagickError meta[style] = {} end end meta end
None
app/models/media_attachment.rb def populate_meta meta = {} file.queued_for_write.each
do |style, file| begin geo = Paperclip::Geometry.from_file file meta[style] = { width: geo.width.to_i, height: geo.height.to_i, size: "#{geo.width.to_i}x#{geo.height.to_i}", aspect: geo.width.to_f / geo.height.to_f, } # rescue Paperclip::Errors::NotIdentifiedByImageMagickError # meta[style] = {} end end meta end
None
app/models/media_attachment.rb def populate_meta meta = {} file.queued_for_write.each
do |style, file| geo = Paperclip::Geometry.from_file file meta[style] = { width: geo.width.to_i, height: geo.height.to_i, size: "#{geo.width.to_i}x#{geo.height.to_i}", aspect: geo.width.to_f / geo.height.to_f, } rescue Paperclip::Errors::NotIdentifiedByImageMagickError meta[style] = {} end meta end
None
https://github.com/bkerley/mastodon/commit/589cdff
tides_and_currents • Code for Miami project • Gets tides and
currents data from NOAA • Quick and dirty ruby scripts
get_stations.rb field_names = %w{geoGroupName stationId lat lon} #
… out_json = doc['stationList'].map do |stn| # … field_names.map do |fn| stn[fn] end end.compact
None
get_stations.rb field_names = %w{geoGroupName stationId lat lon} #
… out_json = doc['stationList'].map do |stn| # … stn.slice(*field_names).values end.compact
None
https://github.com/bkerley/tides_and_currents/commit/bbb8ab78
Topics • Intro • Features • Demos • Q&A
Thanks