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
82
99k
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
3k
TokyoGirls.rb Meetup vol.2 #tokyogirlsrb
jnchito
0
5.4k
○○からRubyへ / #toyamark
jnchito
3
4.6k
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
45
75k
Other Decks in Programming
See All in Programming
Datadog DBMでなにができる? JDDUG Meetup#7
nealle
0
160
AIレビュー導入によるCIツールとの共存と最適化
kamo26sima
1
1.3k
CIBMTR振り返り+敗北から学ぶコンペの取り組み方反省
takanao
1
300
もっと大きなデータを送りませんか? エラーがゴロゴロ出るようなデータです
sublimer
0
120
運用しながらリアーキテクチャ
nealle
0
260
Google Cloudとo11yで実現するアプリケーション開発者主体のDB改善
nnaka2992
1
170
Ça bouge du côté des animations CSS !
goetter
2
170
Kotlinの開発でも AIをいい感じに使いたい / Making the Most of AI in Kotlin Development
kohii00
5
2.2k
Functional APIから再考するLangGraphを使う理由
os1ma
4
320
Goで作るChrome Extensions / Fukuoka.go #21
n3xem
2
2k
React 19アップデートのために必要なこと
uhyo
8
1.6k
Drawing Heighway’s Dragon- Recursive Function Rewrite- From Imperative Style in Pascal 64 To Functional Style in Scala 3
philipschwarz
PRO
0
190
Featured
See All Featured
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
3.7k
Measuring & Analyzing Core Web Vitals
bluesmoon
6
270
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
28
9.3k
Bash Introduction
62gerente
611
210k
Code Review Best Practice
trishagee
67
18k
Mobile First: as difficult as doing things right
swwweet
223
9.5k
A better future with KSS
kneath
238
17k
Gamification - CAS2011
davidbonilla
80
5.2k
Testing 201, or: Great Expectations
jmmastey
42
7.3k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
227
22k
Optimizing for Happiness
mojombo
377
70k
Why You Should Never Use an ORM
jnunemaker
PRO
55
9.2k
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