iteratee | iteratee implementation for Cats that began as a port | Functional Programming library
kandi X-RAY | iteratee Summary
kandi X-RAY | iteratee Summary
This project is an iteratee implementation for Cats that began as a port of Scalaz's iteratee package, although the API and implementation are now very different from Scalaz's. There are API docs (but they're a work in progress), and I've published a blog post introducing the project. The motivations for the port are similar to those for circe—in particular I'm aiming for a more consistent API, better performance, and better documentation. Note that this library doesn't support many of the use cases that fs2 (formerly Scalaz Stream) is designed to handle. It doesn't support nondeterministic reading from multiple streams, for example, and in general is a less appropriate choice for situations where concurrency and parallelism are primary goals. Where the use cases of fs2 and this library do overlap, however, it's often likely to be a simpler, faster solution. The initial performance benchmarks look promising. For example, here are the throughput results for summing a sequence of numbers with this library and cats.Id (II), this library and Monix's Task (IM), this library and Scalaz's Task (IT), this library and Twitter futures (IR), Scalaz Stream (S), scalaz-iteratee (Z), play-iteratee (P), the Scala collections library (C), and fs2 (F). Higher numbers are better.
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iteratee Examples and Code Snippets
Lines of Code : 13
License : No License
Copyfunction isIterateeCall(value, index, object) {
if (!isObject(object)) {
return false;
}
var type = typeof index;
if (type == 'number'
? (isArrayLike(object) && isIndex(index, object.length))
: (type == 'string' && Community Discussions
Trending Discussions on iteratee
QUESTION
Golang 1.18beta supports generic, I want to add an extension method on a generic slice. e.g. a map function is defined as this:
...ANSWER
Answered 2022-Jan-11 at 18:40You have to declare the slice type with type parameters you want to use for the Map() (or for any other) method:
QUESTION
Given the following data structure:
...ANSWER
Answered 2021-Dec-24 at 00:31First let's describe groupBy() at the type level, by giving it a strongly-typed call signature:
QUESTION
For a series of exercises that are recreating Underscore.js, I am trying to understand how the call() method is working under the hood.
I do understand how the call() method works in the example below.
...ANSWER
Answered 2021-Dec-06 at 11:54Many years ago it was common to use the word "context" to refer to the value that this should have during a function call. (It's not a good term and has fallen out of favor.) What that _.each definition is doing is accepting an optional parameter, context, and using that to set what this is when calling the iteratee function that was passed in so that this within the iteratee call is whatever context is. (If context isn't provided, it will be undefined, and this within iteratee will either be undefined [in strict mode] or the global object [in loose mode].)
For example, suppose you have an object with a method and you want to call that method for each entry in an array using _.each. You can do that like this:
QUESTION
I have dozens of functions acting on arrays. See here for the sake of illustration.
As you can see I am using Underscorejs for most operations.
However I want to write a transformation on my main iteratee which is a list of JSON objects like the following:
...ANSWER
Answered 2021-Apr-19 at 08:46At first, I thought of generators to be able to change each item at runtime to be able to have an plain text from a compressed one. Similarly (I think at least for now), it can be achieved by attaching a calculated property to a JSON object, this is possible in JavaScript. Something like:
QUESTION
So I have an array of people, with their names and money.
...ANSWER
Answered 2021-Mar-28 at 16:58For me, a simple reduce will get the job done:
QUESTION
I've implement uniqBy method as following.
...ANSWER
Answered 2021-Feb-01 at 14:50Make a separate Set of the unique primitives instead of using an array; set lookup is much, much faster than an array's .includes. Instead of mapping the uniques each time in the loop, use the separate Set.
QUESTION
I am trying to write a function that grabs the first 14 days (starting today) with momentJS. My function currently looks like
...ANSWER
Answered 2021-Jan-12 at 16:52Array(14).fill(moment())
.map((date, i) => date.add(1, 'days').format('MM/DD'));
QUESTION
I'm trying to recreate the _.each() func from underscore.js, however cannot get the 'context' variable correct. I understand what it's meant to do, but seem to going in circles trying to implement it. I've marked the area of the code below with comments. Any tips appreciated, thanks!
...ANSWER
Answered 2020-Nov-24 at 13:32_.each(
[1, 2, 3],
function(value){
// get context by this
console.log(this.times * value);
},
{ times: 10 } // iteratee context,
)
QUESTION
I am a junior developer who has been coding for 4 weeks.
I'm working on a JavaScript method.
I'll show you the code I used first.
...ANSWER
Answered 2020-Sep-28 at 14:17The problem is here:
QUESTION
When I switching on week view or day view, and if event is not all day (have a range e.g. 1pm - 3pm) I've got an error - iterate is not a function
ANSWER
Answered 2020-Aug-26 at 14:33Okay, problem was in LodashModuleReplacementPlugin. With this plugin webpack replace imports in react-big-calendar for lodash and importing wrong lodash function (or something like this).
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