Functional Java Script - Webtechcon 2009

Nov 16, 20096 likes531 views

The document discusses functional JavaScript programming. It introduces functional programming concepts like avoiding state and mutable data, and having functions where the output depends only on the input. It provides examples of functions creating scope, using closures, and being lazy. It also discusses using functional techniques with libraries like jQuery, Dojo and YUI. The document aims to provide practical tips and experiences with a functional style in JavaScript.

Functional JavaScript
Practical Tips, Tricks and Experiences

@wolframkriesing @uxebu

Montag, 16. November 2009

JavaScript Usability AJAX
Browser mobile
django widgets

FrontEnd dojo
OpenSource
Web2.0 CSS UserExperience
Montag, 16. November 2009

What is Functional
Programming?

Montag, 16. November 2009

treats computation as the evaluation of
mathematical functions

avoids state and mutable data

output value of a function
depends only on the input

Montag, 16. November 2009

avoids state and mutable data

Montag, 16. November 2009

output value of a function
depends only on the input

Montag, 16. November 2009

What is it?
• programming style
functions, closures, arguments, scope

• mathemetics

• stay focused
• practical, pragmatic
• functions create scope!
Montag, 16. November 2009

Another Perspective

nums.slice(0,3)

take 3 nums

Montag, 16. November 2009

Demo
sum.html

http://static.uxebu.com/~cain/functional-examples/sum.html

Montag, 16. November 2009

Function
creates scope
what else can?

Montag, 16. November 2009

•(function(){})()
• create scope
•(function(d){...})(dojo)
• reduce side effects
• prototype overriding can screw you!

Montag, 16. November 2009

•(function(d){...})(dojo)
• reduce side effects
• prototype overriding can screw you!
• function returning a function
• apply/call allow to pass context
• closures

Montag, 16. November 2009

Demo
create-scope.html

http://static.uxebu.com/~cain/functional-examples/create-scope.html

Montag, 16. November 2009

Are you lazy!

Montag, 16. November 2009

You like to be?

Montag, 16. November 2009

Lazy JavaScript...

Montag, 16. November 2009

Demo
lazy.html

http://static.uxebu.com/~cain/functional-examples/lazy.html

Montag, 16. November 2009

Demo
hitch.html

http://static.uxebu.com/~cain/functional-examples/hitch.html

Montag, 16. November 2009

Use side effects

Montag, 16. November 2009

["00300_car",
"00060_bike",
"00200_motorbike",
...]

[300, 60, 200, ...].sort()

Montag, 16. November 2009

Demo
dojox.lang.functional.lambda

Montag, 16. November 2009

Used where?
• AJAX
• jQuery, dojo, YUI, etc.
• $.each, $.map, ...
• $("div").css("color", "red")
• dojo.hitch()
• etc.
Montag, 16. November 2009

Pros + Cons
• reduces cost
• simplify problems
• speed?
• seperate concerns think different
•
• confidence++
• learn when to use it
• testability
• it's optional
Montag, 16. November 2009

thx, Q&A

@wolframkriesing @uxebu

Montag, 16. November 2009

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Have-a-skate-with-Bob (HASB-KC) is a local charity that holds two Hockey Tournaments every year to raise money in the fight against Pancreatic Cancer. The FME Form software is used to integrate and exchange data via API, between Google Forms, Google Sheets, Stripe payments, SmartWaiver, and the GoDaddy email marketing tools to build a grass-roots Customer Relationship Management (CRM) system for the charity. The CRM is used to communicate effectively and readily with the participants of the hockey events and most importantly the local area sponsors of the event. Communication consists of a BLOG used to inform participants of event details including, the ever-important team rosters. Funds raised by these events are used to support families in the local area to fight cancer and support PanCan research efforts to find a cure against this insidious disease. FME Form removes the tedium and error-prone manual ETL processes against these systems into 1 or 2 workbenches that put the data needed at the fingertips of the event organizers daily freeing them to work on outreach and marketing of the events in the community.

June Patch TuesdayIvanti

Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.

Crypto Super 500 - 14th Report - June2025.pdfStephen Perrenod

This OrionX's 14th semi-annual report on the state of the cryptocurrency mining market. The report focuses on Proof-of-Work cryptocurrencies since those use substantial supercomputer power to mint new coins and encode transactions on their blockchains. Only two make the cut this time, Bitcoin with $18 billion of annual economic value produced and Dogecoin with $1 billion. Bitcoin has now reached the Zettascale with typical hash rates of 0.9 Zettahashes per second. Bitcoin is powered by the world's largest decentralized supercomputer in a continuous winner take all lottery incentive network.

War_And_Cyber_3_Years_Of_Struggle_And_Lessons_For_Global_Security.pdfbiswajitbanerjee38

Russia is one of the most aggressive nations when it comes to state coordinated cyberattacks — and Ukraine has been at the center of their crosshairs for 3 years. This report, provided the State Service of Special Communications and Information Protection of Ukraine contains an incredible amount of cybersecurity insights, showcasing the coordinated aggressive cyberwarfare campaigns of Russia against Ukraine. It brings to the forefront that understanding your adversary, especially an aggressive nation state, is important for cyber defense. Knowing their motivations, capabilities, and tactics becomes an advantage when allocating resources for maximum impact. Intelligence shows Russia is on a cyber rampage, leveraging FSB, SVR, and GRU resources to professionally target Ukraine’s critical infrastructures, military, and international diplomacy support efforts. The number of total incidents against Ukraine, originating from Russia, has steadily increased from 1350 in 2021 to 4315 in 2024, but the number of actual critical incidents has been managed down from a high of 1048 in 2022 to a mere 59 in 2024 — showcasing how the rapid detection and response to cyberattacks has been impacted by Ukraine’s improved cyber resilience. Even against a much larger adversary, Ukraine is showcasing outstanding cybersecurity, enabled by strong strategies and sound tactics. There are lessons to learn for any enterprise that could potentially be targeted by aggressive nation states. Definitely worth the read!

Agentic AI: Beyond the Buzz- LangGraph Studio V2Shashikant Jagtap

“Addressing Evolving AI Model Challenges Through Memory and Storage,” a Prese...Edge AI and Vision Alliance

For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2025/06/addressing-evolving-ai-model-challenges-through-memory-and-storage-a-presentation-from-micron/ Wil Florentino, Senior Segment Marketing Manager at Micron, presents the “Addressing Evolving AI Model Challenges Through Memory and Storage” tutorial at the May 2025 Embedded Vision Summit. In the fast-changing world of artificial intelligence, the industry is deploying more AI compute at the edge. But the growing diversity and data footprint of transformers and models such as large language models and large multimodal models puts a spotlight on memory performance and data storage capacity as key bottlenecks. Enabling the full potential of AI in industries such as manufacturing, automotive, robotics and transportation will require us to find efficient ways to deploy this new generation of complex models. In this presentation, Florentino explores how memory and storage are responding to this need and solving complex issues in the AI market. He examines the storage capacity and memory bandwidth requirements of edge AI use cases ranging from tiny devices with severe cost and power constraints to edge servers, and he explains how new memory technologies such as LPDDR5, LPCAMM2 and multi-port SSDs are helping system developers to meet these challenges.

Artificial Intelligence in the Nonprofit Boardroom.pdfOnBoard