date-fns provides the most comprehensive yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.
The type signature notation used in this document is described below:1 :: "is a member of". e :: t can be read as: "the expression e is a member of type t". true :: Boolean - "true is a member of type Boolean". 42 :: Integer, Number - "42 is a member of the Integer and Number types". New types can be created via type constructors. Type constructors can take zero or more type arguments. Array is a
Too Long; Didn't ReadI love the new <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise" target="_blank">Promise</a> library that ships with ES6, though one thing has been left out, a function to sequentially execute multiple promises. I love the new Promise library that ships with ES6, though one thing has been left out, a function to sequentially exe
List is a purely functional alternative to arrays. It is an implementation of a fast persistent sequence data structure. Compared to JavaScript's Array List has three major benefits. Safety. List is immutable. This makes it safer and better suited for functional programming. It doesn't tempt you with an imperative API and accidental mutations won't be a source of bugs. Performance. Since List does
Thinking in Ramda: Wrap-Up Jul 19, 2016 • Randy Coulman • posted in Thinking in Ramda functional javascript ramda Thinking in Ramda: Lenses Jul 12, 2016 • Randy Coulman • posted in Thinking in Ramda functional javascript ramda Thinking in Ramda: Immutability and Arrays Jul 5, 2016 • Randy Coulman • posted in Thinking in Ramda functional javascript ramda Thinking in Ramda: Immutability and Objects
When buzzdecafe recently introduced Ramda to the world, there were two distinct groups of responses. Those accustomed to functional techniques -- in Javascript or in other languages -- mostly responded with, "Cool". They may have been excited by it or just casually noting another potential tool, but they understood what it was for. The second group responded with a resounding, "Huh?" To those not
A programmer’s pipe-dream is to write code, and be able to use it repeatedly with little effort. It’s expressive because you write in a way that expresses what is needed, and it’s reuse because.. well, you’re reusing. What more could you want? curry can help. What is currying, and why is it so damn tasty? Normal function invocation in JavaScript goes something like this: var add = function(a, b){
by Alexey Kachayev, 2012 About me Position: CTO at Kitapps Inc. Production experience: Python, Java, JS, Go, Scala, Clojure, Erlang Looked at: Haskell, Lisp, Scheme Goals Short functional paradigm presentation Dispel popular myths about FP Characterize Python & FP relations Why should I care? How can I make my code better? More How, less Why About functional Imperative programming (С/C++, Java) De
Written April 17, 2013 updated: May 20, 2013 Here's a simple value: And we know how to apply a function to this value: Simple enough. Lets extend this by saying that any value can be in a context. For now you can think of a context as a box that you can put a value in: Now when you apply a function to this value, you'll get different results depending on the context. This is the idea that Functors
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