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
Node conf ar 2018.
Search
Willian Martins
October 19, 2018
Technology
0
520
Node conf ar 2018.
Willian Martins
October 19, 2018
Tweet
Share
More Decks by Willian Martins
See All by Willian Martins
Empirical Observations on the The Future of Scalable UI Architecture
wmsbill
0
140
Além do else! Categorizando Pokemóns com Pattern Matching no JavaScript
wmsbill
0
860
De volta ao Futuro do JS: As próximas features e propostas incríveis
wmsbill
0
94
Back to the future of JS II: Beyond what we can foresee
wmsbill
0
110
A, B, C. 1, 2, 3. Iterables you and me.
wmsbill
0
92
Back to the future of JS II: Beyond what we can foresee
wmsbill
0
110
Back to the future of JS.
wmsbill
0
11
Back to the future of JS
wmsbill
1
70
Back to the future of JS
wmsbill
2
270
Other Decks in Technology
See All in Technology
Windows 11 で AWS Documentation MCP Server 接続実践/practical-aws-documentation-mcp-server-connection-on-windows-11
emiki
0
900
BigQuery Remote FunctionでLooker Studioをインタラクティブ化
cuebic9bic
3
260
Agentic Workflowという選択肢を考える
tkikuchi1002
1
480
Node-REDのFunctionノードでMCPサーバーの実装を試してみた / Node-RED × MCP 勉強会 vol.1
you
PRO
0
110
「Chatwork」の認証基盤の移行とログ活用によるプロダクト改善
kubell_hr
1
110
Oracle Audit Vault and Database Firewall 20 概要
oracle4engineer
PRO
3
1.7k
5min GuardDuty Extended Threat Detection EKS
takakuni
0
110
ローカルLLMでファインチューニング
knishioka
0
140
ひとり情シスなCTOがLLMと始めるオペレーション最適化 / CTO's LLM-Powered Ops
yamitzky
0
420
原則から考える保守しやすいComposable関数設計
moriatsushi
3
530
IIWレポートからみるID業界で話題のMCP
fujie
0
770
_第3回__AIxIoTビジネス共創ラボ紹介資料_20250617.pdf
iotcomjpadmin
0
150
Featured
See All Featured
Become a Pro
speakerdeck
PRO
28
5.4k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
181
53k
Raft: Consensus for Rubyists
vanstee
140
7k
Embracing the Ebb and Flow
colly
86
4.7k
Rebuilding a faster, lazier Slack
samanthasiow
81
9k
A designer walks into a library…
pauljervisheath
206
24k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
15
1.5k
Typedesign – Prime Four
hannesfritz
42
2.7k
Art, The Web, and Tiny UX
lynnandtonic
299
21k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
35
2.3k
A better future with KSS
kneath
239
17k
Transcript
¡Hola!
https://github.com/tc39/proposals
v. NodeConf Ar
@wmsbill What is this?
@wmsbill this in the global scope Browser - window Web
worker - self NodeJS - module.exports
@wmsbill this inside a function?
@wmsbill this inside a function?
@wmsbill What is this?
@wmsbill What is this?
@wmsbill this inside a function Browser - window NodeJS -
global object
@wmsbill this with new operator
@wmsbill this with new operator
@wmsbill this with strict mode
@wmsbill this with strict mode
@wmsbill Setting this value Function.prototype.call Function.prototype.apply Function.prototype.bind new operator Object
member function
@wmsbill Setting this value
@wmsbill How to make this predictable? Reasoning the value of
this is tricky Function.prototype.bind Arrow function () => {}
None
With .bind()
With Arrow
@wmsbill Calling a knowing function
@wmsbill Extracting a method from an object
None
@wmsbill Two syntaxes Unary : :context.method() Binary context: :method()
@wmsbill Unary syntax
@wmsbill Binary syntax
@wmsbill
@wmsbill
@wmsbill
@wmsbill Bind operator is good for virtual methods But relies
on this to be bound
@wmsbill Composing without this
@wmsbill
@wmsbill
None
@wmsbill Pipeline operator |> It is a syntax sugar for
function composition It creates a way to streamline a chain of functions
@wmsbill Pipeline operator |>
@wmsbill
@wmsbill
@wmsbill
@wmsbill Function with more params
@wmsbill Function with more params
@wmsbill Awaiting a function
@wmsbill Awaiting a function
@wmsbill Awaiting a function
@wmsbill Awaiting a function
@wmsbill Awaiting a function
None
@wmsbill Smart pipeline
@wmsbill Smart pipeline Two types bare style and topic style
() or [] are disallowed in bare style When () or [] is needed, topic style is used # token is subject to change
@wmsbill What about curry?
None
@wmsbill F# pipeline proposal Extends the minimal proposal with an
await step Await step waits for the resolution of the previous step
@wmsbill F# pipeline proposal
@wmsbill
@wmsbill Partial application f(…) arity = n; partialapp(f(…)) arity =
m; m < n
@wmsbill
@wmsbill
@wmsbill Partial application in ES Achievable by Function.prototype.bind .bind() binds
context and parameters
@wmsbill
@wmsbill What about currying? We can achieve partial application with
curry Curry ≠ Partial application Curry returns arity n-1
@wmsbill
@wmsbill Partial application with arrow function
None
@wmsbill Partial application proposal Creates two new parameters tokens ?
For single argument . . . for multiple parameters (not in the initial spec anymore)
@wmsbill Partial application syntax
@wmsbill With arbitrary parameter
None
@wmsbill Partial application in template string
@wmsbill Partial application in template string
None
@wmsbill The . . . token Spread the unbound parameters
Useful when you want to bound first or last parameter
@wmsbill The . . . token
@wmsbill The . . . token
@wmsbill Partial application + pipeline
@wmsbill Partial application + pipeline
@wmsbill Should I use all of it in production? These
proposal are in very early stage The adoption of one, may change the syntax/semantics of other Not production ready (yet)
https://medium.com/@wmsbill https://twitter.com/wmsbill
[email protected]
https://www.smashingmagazine.com/2018/10/taming-this-javascript-bind- operator/
¡Gracias!