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
Unhappy Exception Handling
Search
Junichi Ito
November 15, 2018
Programming
1
3k
Unhappy Exception Handling
I talked at Ruby Conf 2018 lightning talks.
Junichi Ito
November 15, 2018
Tweet
Share
More Decks by Junichi Ito
See All by Junichi Ito
Enjoy Ruby programming, Enjoy Ruby community! #osrb03
jnchito
3
11k
良質な技術記事を量産する秘訣 / #MeetsPro
jnchito
22
16k
出版したら終わり、にしない技術書執筆 / #DevRel #DevReljp
jnchito
0
12k
リーダブルテストコード / #vstat
jnchito
85
100k
銀座Rails版 「Rubyプログラミング問題に チャレンジ!」公開コードレビュー / ginzarails code review
jnchito
3
3.1k
TokyoGirls.rb Meetup vol.2 #tokyogirlsrb
jnchito
0
6.4k
○○からRubyへ / #toyamark
jnchito
3
4.7k
プログラマがコードを書きながら考えること / #ginzarails
jnchito
4
12k
なぜテストを書くの?(または書かないの?) 〜テストコードの7つの役割〜 / #tamarubykaigi01
jnchito
46
77k
Other Decks in Programming
See All in Programming
Kiroの仕様駆動開発から見えてきたAIコーディングとの正しい付き合い方
clshinji
1
200
【第4回】関東Kaggler会「Kaggleは執筆に役立つ」
mipypf
0
1.1k
Kiroで始めるAI-DLC
kaonash
2
570
Updates on MLS on Ruby (and maybe more)
sylph01
1
180
Design Foundational Data Engineering Observability
sucitw
3
180
AIでLINEスタンプを作ってみた
eycjur
1
230
AI時代のUIはどこへ行く?
yusukebe
16
8.4k
Introducing ReActionView: A new ActionView-compatible ERB Engine @ Rails World 2025, Amsterdam
marcoroth
0
580
プロポーザル駆動学習 / Proposal-Driven Learning
mackey0225
2
960
Vue・React マルチプロダクト開発を支える Vite
andpad
0
110
意外と簡単!?フロントエンドでパスキー認証を実現する WebAuthn
teamlab
PRO
2
660
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
Featured
See All Featured
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
The Language of Interfaces
destraynor
161
25k
Building a Scalable Design System with Sketch
lauravandoore
462
33k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Docker and Python
trallard
45
3.5k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
4k
Intergalactic Javascript Robots from Outer Space
tanoku
272
27k
Navigating Team Friction
lara
189
15k
Designing for Performance
lara
610
69k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3k
Building Better People: How to give real-time feedback that sticks.
wjessup
368
19k
Producing Creativity
orderedlist
PRO
347
40k
Transcript
6/)"11:&9$&15*0/)"/%-*/( +VOJDIJ*UP
5IFCBTJDTZOUBYPGFYDFQUJPOIBOEMJOHJO3VCZ begin # Exception might happen a = 1 /
0 rescue => e # Handle the exception # and the program continues puts "error: #{e.message}" end puts a Twitter @jnchito / GitHub JunichiIto
*UJTWFSZTJNQMF CVU ➤ 4PNFQSPHSBNNFSTNJTVTFFYDFQUJPOIBOEMJOH ➤ 5IFZNJTVOEFSTUBOEl*GFYDFQUJPOIBQQFOT VTFASFTDVFA5IBU`TPLBZz ➤ 5IFZCFHJOXSJUJOHASFTDVFAFWFSZXIFSF ➤
5IFZCFMJFWFl.ZQSPHSBNJTOPXSFMJBCMFz ➤/0! Twitter @jnchito / GitHub JunichiIto
40.&:&"34"(0 Twitter @jnchito / GitHub JunichiIto
*IBEBUSPVCMFBUBQSFWJPVTKPC ➤ *KPJOFEBQSFWJPVTDPNQBOZBTBOJOIPVTFTPGUXBSFFOHJOFFS ➤ *CFDBNFUIFNBJOUBJOFSPGBOFYJTUJOHJOIPVTFXFCBQQMJDBUJPO ➤ *UXBTBHPPECPZCFDBVTFJUIBECFFOSVOOJOH1&3'&$5-:GPSZFBST ➤ 0OFEBZ *IBEBOPQQPSUVOJUZUPUBMLXJUIPOFPGUIFVTFST
➤ )FTIPXFENFIJTSFHVMBSPQFSBUJPO*XBTXBUDIJOHJU ➤ )FDMJDLFEUIFTBWFCVUUPO UIFO*TBXBEJBMPHl4ZTUFNFSSz ➤ l0I XIBU 8IBU`TUIJT z ➤ l8FTFFJUWFSZPGUFO4PXF`SFDMJDLJOHUIFTBWFCVUUPOBHBJOBOEBHBJOz Twitter @jnchito / GitHub JunichiIto
None
5IFDPEFXBTMJLFUIJT OPU3BJMTBDUVBMMZ def update @post.update!(post_params) redirect_to @post rescue => e
# Just display error code flash[:alert] = "System err: #{e.code}" render :edit end ➤ /FJUIFSOPUJpFE OPSMPHHFE8FOFWFSOPUJDFEFWFOJGBOFSSPSPDDVSSFE ➤ 6OGPSUVOBUFMZ UIFVTFSTIBEBQSPDFEVSF l*GZPVHFUUIJTFSSPS LFFQPOSFUSZz ➤ 5IFSPPUDBVTF%FBEMPDLXBTJOWPMWFETPGSFRVFOUMZEVFUPBCBEUBCMFEFTJHO 6/)"11:&9$&15*0/ )"/%-*/()&3& Twitter @jnchito / GitHub JunichiIto
$PODMVTJPO8IBUDBOXFMFBSOGSPNUIJTTUPSZ ➤ 5IFNJTVTFPGFYDFQUJPOIBOEMJOHMFBETUFSSJCMFDPOTFRVFODFT ➤ 8IBUZPVDBOEPBOEXIBUZPVTIPVME PSTIPVMEO`U EPBSFEJ⒎FSFOU ➤ *GZPVEPO`UDPOpEFODFJOFYDFQUJPOIBOEMJOHT
➤ %0/05VTFASFTDVFATPDBTVBMMZ ➤ %FMFHBUFFYDFQUJPOIBOEMJOHUPGSBNFXPSLT QBHF MPHHJOH FUD ➤ "TLNFOUPSTGPSIFMQBCPVUZPVSDPEFEFTJHO ➤ -FU`TEPIBQQZFYDFQUJPOIBOEMJOH❤ Twitter @jnchito / GitHub JunichiIto
"#065.& ➤ +VOJDIJ*UP $BMMNF+VO ➤ 4PGUXBSF&OHJOFFSBU4POJD(BSEFO*OD ➤ %FWFMPQJOH3BJMTBQQMJDBUJPOT ➤
Twitter @jnchito ➤ GitHub JunichiIto
1&340/"-803,4 ➤ 5SBOTMBUFE&WFSZEBZ3BJMT5FTUJOHXJUI34QFD https://leanpub.com/everydayrailsrspec-jp
1&340/"-803,4 ➤ 8SPUFBCPPLDBMMFE*OUSPEVDUJPOUP3VCZ 1SPHSBNNJOHGPS'VUVSF1SPGFTTJPOBMT https://ruby-book.jnito.com/en While reading the manuscript, I
felt many times "Oh, this is what it means to truly understand other people's feelings." This book is definitely useful for everyone to go on to the "next step”. From the foreword by Matz English Publisher W anted! “Learn Ruby Before Rails.
5)"/,:06 Twitter @jnchito GitHub JunichiIto Book https://ruby-book.jnito.com/en