This document provides an introduction to functional programming. It begins by explaining that while programs with functions could be considered functional, functional programming specifically avoids mutable state and treats computation as mathematical function evaluation. It then contrasts imperative vs declarative programming and gives examples in different languages. Finally, it demonstrates how JavaScript supports some functional programming concepts like first-class functions and provides a short example of mapping a function over an array to summarize the key ideas of functional programming.
What is "functional programming", "pure function", "functional language", "lambda function" and "higher-order function" and how these concepts work in modern programming?
Watch the video lesson from Svetlin Nakov and learn more at:
https://softuni.org/dev-concepts/what-is-functional-programming
This is my very first seminar presentation. It was presented at an event organized by Adama Science And Technology University Computer Science And Engineering Club. Here I discuss the basic concepts in the world of functional programming.
A beginner level programming event where you will take your first steps with the basic concepts of C. You will have skill checks in between, in the form of quizzes and you will also get hands-on exposure in this field.
Functional Python Webinar from October 22nd, 2014Reuven Lerner
Slides from my free functional Python webinar, given on October 22nd, 2014. Discussion included functional programming as a perspective, passing functions as data, and writing programs that take functions as parameters. Includes (at the end) a coupon for my new ebook, Practice Makes Python.
What is "functional programming", "pure function", "functional language", "lambda function" and "higher-order function" and how these concepts work in modern programming?
Watch the video lesson from Svetlin Nakov and learn more at:
https://softuni.org/dev-concepts/what-is-functional-programming
This is my very first seminar presentation. It was presented at an event organized by Adama Science And Technology University Computer Science And Engineering Club. Here I discuss the basic concepts in the world of functional programming.
A beginner level programming event where you will take your first steps with the basic concepts of C. You will have skill checks in between, in the form of quizzes and you will also get hands-on exposure in this field.
Functional Python Webinar from October 22nd, 2014Reuven Lerner
Slides from my free functional Python webinar, given on October 22nd, 2014. Discussion included functional programming as a perspective, passing functions as data, and writing programs that take functions as parameters. Includes (at the end) a coupon for my new ebook, Practice Makes Python.
Using functional concepts in Python. Introduction to functional programming and exploring each of the concepts, like map, filter and reduce in detail and how functional programming can help creating massively parallel software systems
A high-level overview of the Closure Compiler's type system, type checking and type system capabilities. For a full description http://code.google.com/closure/compiler/docs/js-for-compiler.html
Using functional concepts in Python. Introduction to functional programming and exploring each of the concepts, like map, filter and reduce in detail and how functional programming can help creating massively parallel software systems
A high-level overview of the Closure Compiler's type system, type checking and type system capabilities. For a full description http://code.google.com/closure/compiler/docs/js-for-compiler.html
MAXXCONNECT, A Celebration of Social Media, A Workshop/Coaching on the art of Social and Corporate networking. Reach out to Shankar Nabar at Shankarnabar@yahoo.com Organized by The Starworks Leaership Center and Network and Coach Shankar Nabar
This was a proposal created in response to an RFP from a Middle East client. It involved hiring 12 people with a cumulative experience of 170 yrs, 4 PhDs, and 12 MBAs in a short span of 20 days. Singlehandedly hiring them, interviewing them, getting them to contribute to their areas of specialization in the proposal. Architecting the proposal and finally INTEGRATING IT in its present final form and format ... Shankar Nabar, CEO, Shankar Nabar Consuling, shankarnabar@yahoo.com, www.shankarnabar.com
social media promotion- Mister Moon Media (A Shankar Nabar Company)ShankarNabar
Approach Note - For YOUR ORGANIZATION'S
Social Media Promotion Campaign
Mister Moon Media (A Shankar Nabar Company)
With the clear goal of WINNING THE Marketplace and the associated systems and process driven approach supported by technology, our plan brings together, from the Diagnostic phase, the elements required to be incorporated and/or Social Media Promotion Campaign for Marketplace readiness. This will ensure that the Social Media process is not at cross purposes with the rest of the Political Campaign initiatives and does not have to be repeated
Best Practices and Benchmarking is a cornerstone of our approach – it ensures that the learning already available is applied without having to go through the entire learning cycle
Our Integrated Project Management methodology ensures that the large scale Social Media Promotion Campaigns in multiple areas within Social Media, many of which will be done concurrently, are planned and phased and brought together by design.
IxD & UX Design - Personifying Digital InteractionsJayan Narayanan
Interaction design is one of the most challenging area in digital space. Especially when we understand the context of complex lifestyle we are living. It is my try to understand what is happening in the area of interaction design and how design principles & psychological approaches can help us on this area.
Originally this presentation created for present in person in front of a group of people hence you may find some gaps in continuity. I am in a process in fixing these gaps - meanwhile please let me know your views and opinion on the topic / presentation.
Go Beyond Higher Order Functions: A Journey into Functional ProgrammingLex Sheehan
Here's an introduction to folks using FP in various programming languages (especially those with built-in support for first class functions).
Join Lex Shehan as he shares his journey into FP as a retrospective; it should be great introduction to folks to using FP in other languages (especially those with built-in support for first class functions).
Our journey will include:
* high order functions in javascript (lodash)
* functional programming in Ruby
* going deeper in FP with Scala
* learning Haskell to gain a broader understanding of FP
* the history of FP and what Category Theory has to do with FP
* challenges & opportunities of incorporating FP techniques in Go
Twins: Object Oriented Programming and Functional ProgrammingRichardWarburton
Object-Oriented Programming has well established design principles, such as SOLID. For many developers architecture and functional programming are at odds with each other: they don’t know how their existing tricks of the trade convert into functional design. This problem becomes worse as hybrid languages such as Java 8 or Scala become common. We’ll talk about how functional programming helps you implement the SOLID principles, and how a functional mindset can actually help you achieve cleaner and simpler OO design.
Check out these exercises: http://de.slideshare.net/nicolayludwig/3-cpp-procedural-programmingexercises
- Procedural Programming
- Predefined and User defined Functions
- Declaration and Definition of Functions
- Procedural and recursive Function Calling
- Namespaces and separated Function Definitions
- A Glimpse of Separated Compilation and Translation Units
This presentation will introduce you to programming languages that support different programming paradigms and to give you the knowledge of basic concepts and techniques that will allow them to differentiate between various programming paradigms.
An overview of functional programming. You can do functional programming in any language, it’s just that some languages push you toward this style. There are many styles of programming, depending on the dimension you look at and the features available in the language: Imperative vs Functional, Compiled vs Scripting, Static vs Dynamic, Implicit vs Explicit type conversion, Managed vs Unmanaged (memory). We'll talk about these concepts.
Github: https://github.com/ijcd
Twitter: @ijcd
San Francisco, California
My presentation at Sulake (www.sulake.com) about functional programming languages and how to adopt a functional-style in Java development. I argue that functional programs are more robust than imperative ones.
4. Wait... isn't this
#include <stdio.h>
int main(void) {
printf("Hello world!n");
return 0;
}
already functional programming? It is after all a
program that defines a function main(), which
is then executed ...
6. In computer science, functional
programming is a programming
paradigm that treats computation
as the evaluation of mathematical
functions and avoids state and
mutable data.
… just having functions isn't enough ...
8. Imperative vs. Declarative
●
Imperative programming is a programming
paradigm that describes computation in
terms of statements that change a program
state. Imperative programs define
sequences of commands for the computer
to perform.
●
Declarative programming is a programming
paradigm that expresses the logic of a
computation without describing its control
flow.
10. Example: factorial
Imperative: Declarative:
def factorial(x) def factorial(x)
res = 1 if x < 2
while (x > 1) return 1
res = res*x else
x = x1 return x*factorial(x1)
end end
return res end
end
print(factorial(10))
x = 10
print(factorial(x))
13. Lambda calculus
●
The λ-calculus calculus was introduced by
mathematician Alonzo Church in the 1930s.
●
The λ-calculus treats functions "anonymously",
without giving them explicit names.
●
In λ-calculus, functions are taken to be 'first
class values', so functions may be used as the
inputs and returned as outputs from other
functions.
●
λ-calculus – a formal system for function
definition, application, and recursion.
17. Applying FP to the *real* world?
●
I am a JavaScript person, so I will write JS!
you
have
been
warned
18. Can you do FP in JS?
●
If you define functional language as the
language that supports first class functions
and lambdas, then yes, JavaScript *is* a
functional language.
●
JavaScript supports passing around functions
as variables.
●
JavaScript supports anonymous functions.
Short answer – yes! If you
start to argue – no.
19. A short demo
●
If you have any good taste at all, one ugly
detail must be starting to bother you - the
endlessly repeated for loop going over an
array.
function printArray(array) {
for (var i = 0; i < array.length; i++)
print(array[i]);
}
20. ●
But what if we want to do something other
than print? Because 'doing something' is really
a function, and functions are also values, we
can pass our action as a function value.
function forEach(array, action) {
for (var i = 0; i < array.length; i++)
action(array[i]);
}
forEach(
["Wampeter", "Foma", "Granfalloon"],
print
);
21. ●
And by making use of an anonymous function,
something just like a for loop can be written
with less useless details.
function sum(numbers) {
var total = 0;
forEach(numbers, function (number) {
total += number;
});
return total;
}
show(sum[1, 10, 100]);
22. ●
On the whole, using more abstract (or 'higher
level') constructs results in more information
and less noise. Compare the following:
var paragraphs = archive[today].split("n");
for (var i = 0; i < paragraphs.length; i++)
processParagraph(paragraphs[i]);
versus
forEach(
archive[today].split("n"),
ProcessParagraph
);