Upgrade to Pro — share decks privately, control downloads, hide ads and more …

The true nature of the Singleton pattern

Sponsored · Your Podcast. Everywhere. Effortlessly. Share. Educate. Inspire. Entertain. You do you. We'll handle the rest. →
Avatar for Ade Oshineye Ade Oshineye PRO
November 09, 2013
Programming
0
230

The true nature of the Singleton pattern

My lightning talk from SCNA 2013 in which I explain (in 5 minutes) why this is a pattern not a class and describe the various concerns that constitute this pattern: policy, environment, mechanism and subject.

Avatar for Ade Oshineye

Ade Oshineye PRO

November 09, 2013
Tweet

More Decks by Ade Oshineye

See All by Ade Oshineye
GeistFabrik and AI-augmented software development
Avatar for Ade Oshineye adewale
PRO
0
840
Tools For Thought: From the Memex to index cards
Avatar for Ade Oshineye adewale
PRO
0
1.6k
DevRel Leadership: all the pieces matter
Avatar for Ade Oshineye adewale
PRO
0
570
Creating successful apps in 2017
Avatar for Ade Oshineye adewale
PRO
1
120
What makes a popular Android app?
Avatar for Ade Oshineye adewale
PRO
0
120
A mobile web of apps and documents
Avatar for Ade Oshineye adewale
PRO
0
5.1k
Why is an API like a puppy?
Avatar for Ade Oshineye adewale
PRO
2
1.1k
The state of Social
Avatar for Ade Oshineye adewale
PRO
1
130
I never metaphor I didn't like
Avatar for Ade Oshineye adewale
PRO
0
150

Other Decks in Programming

See All in Programming
DevinとClaude Code、SREの現場で使い倒してみた件
Avatar for karia/Y.Hisamatsu karia
1
1k
Codex の「自走力」を高める
Avatar for yorifuji yorifuji
0
1.2k
Agent Skills Workshop - AIへの頼み方を仕組み化する
Avatar for Gota gotalab555
15
8.5k
grapheme_strrev関数が採択されました（あと雑感）
Avatar for てきめん tekimen youkidearitai
PRO
1
210
AI主導でFastAPIのWebサービスを作るときに 人間が構造化すべき境界線
Avatar for Jun okazaki okajun35
0
700
社内規程RAGの精度を73.3% → 100%に改善した話
Avatar for oharu121 oharu121
13
7.9k
AWS×クラウドネイティブソフトウェア設計 / AWS x Cloud-Native Software Design
Avatar for nrs nrslib
15
3k
Goの型安全性で実現する複数プロダクトの権限管理
Avatar for ishikawa-pro ishikawa_pro
1
250
文字コードの話
Avatar for Masaki Hara qnighy
44
17k
2026年は Rust 置き換えが流行る！ / 20260220-niigata-5min-tech
Avatar for girigiribauer girigiribauer
0
230
RubyとGoでゼロから作る証券システム： 高信頼性が求められるシステムのコードの外側にある設計と運用のリアル
Avatar for free_world21 free_world21
0
260
守る「だけ」の優しいEMを抜けて、 事業とチームを両方見る視点を身につけた話
Avatar for Mitsui maroon8021
3
760

Featured

See All Featured
How GitHub (no longer) Works
Avatar for Zach Holman holman
316
140k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
Avatar for mongodb mongodb
49
9.9k
StorybookのUI Testing Handbookを読んだ
Avatar for Shingo Yamazaki zakiyama
31
6.6k
My Coaching Mixtape
Avatar for mlcsv mlcsv
0
69
The Art of Delivering Value - GDevCon NA Keynote
Avatar for David Neal reverentgeek
16
1.9k
Automating Front-end Workflow
Avatar for Addy Osmani addyosmani
1370
200k
The Organizational Zoo: Understanding Human Behavior Agility Through Metaphoric Constructive Conversations (based on the works of Arthur Shelley, Ph.D)
Avatar for Dr. Kim W Petersen kimpetersen
PRO
0
270
SEOcharity - Dark patterns in SEO and UX: How to avoid them and build a more ethical web
Avatar for Sara Fernández Carmona sarafernandez
0
140
Building an army of robots
Avatar for Kyle Neath kneath
306
46k
Game over? The fight for quality and originality in the time of robots
Avatar for Wayne Barker wayneb77
1
130
The Power of CSS Pseudo Elements
Avatar for Geoffrey Crofte geoffreycrofte
82
6.2k
How Software Deployment tools have changed in the past 20 years
Avatar for Geshan Manandhar geshan
0
32k

Transcript

  1. THE TRUE NATURE OF THE SINGLETON PATTERN Ade Oshineye

  2. GOOD VS EVIL

  3. None

  4. EMPTY THE CUP

  5. POLICY ENVIRONMENT

  6. MECHANISM SUBJECT

  7. Ceci n’est pas une Singleton

  8. PATTERN NOT A CLASS