functional-javascript | fun set of koans to teach | Functional Programming library

by mrdavidlaing JavaScript Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | functional-javascript Summary

functional-javascript is a JavaScript library typically used in Programming Style, Functional Programming applications. functional-javascript has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A fun set of koans to teach you functional programming techniques in Javascript

Support

Quality

Security

License

Reuse

Support

functional-javascript has a low active ecosystem.

It has 15 star(s) with 6 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

functional-javascript has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of functional-javascript is current.

Quality

functional-javascript has 0 bugs and 0 code smells.

Security

functional-javascript has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

functional-javascript code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

functional-javascript does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

functional-javascript releases are not available. You will need to build from source code and install.

functional-javascript saves you 406 person hours of effort in developing the same functionality from scratch.

It has 963 lines of code, 0 functions and 15 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of functional-javascript

Get all kandi verified functions for this library.

functional-javascript Key Features

No Key Features are available at this moment for functional-javascript.

functional-javascript Examples and Code Snippets

No Code Snippets are available at this moment for functional-javascript.

Community Discussions

Trending Discussions on functional-javascript

Do javascript functions have referential transparency with mutable state?

Synchronously executing promises saved in variables

If objects are passed by reference how do I handle them in functional programming

PHPUnit Xdebug with PhpStorm Breakpoint is not being triggered unless I disable listening button

Why isn't this recursive definition of reduce working (JS)?

QUESTION

Do javascript functions have referential transparency with mutable state?

Asked 2018-Oct-22 at 23:39

Reading through this article on Javascript Functional Programming and it mentions Referential Transparency being defined as:

Referential transparency: The function always gives the same return value for the same arguments. This means that the function cannot depend on any mutable state.

IIUC Javascript functions satisfy this requirement even if they depend on mutable state, because two functions cannot operate on shared state even if they are running at the same time?

...

ANSWER

Answered 2018-Oct-22 at 23:39

So to summarize our discussion, yes Javascript functions do have referential transparency as long as the mutable state they depend on does not change.

In other words the same output will be provided for the same input while the mutable state that the function depends on is held constant.

This seems somewhat obvious, but for Javascript and functional programming its an important concept / realization because Javascript cannot run the function in two threads at the same time. If we could change the state that the function depends on while the function is running we could create race conditions that are hard to reason about and that would make the function results unpredictable, which is what we are trying to avoid with referential transparency.

For example a function fn(5), that depends on mutable state x will always return the same result for the same input, as long as x does not change.

In non Javascript environments it's possible to change x while the function is running, so two invocations of fn(5) could return different results.

With Javascript if fn(5) returns a different result, we know exactly why. It's because x was changed between invocations of fn(5).

Source https://stackoverflow.com/questions/52938276

QUESTION

Synchronously executing promises saved in variables

Asked 2018-Apr-24 at 11:06

I drafted a code example to better understand Promise chaining and found myself quite confused about what's going on here.

Let's say we have two variables which store Promises:

...

ANSWER

Answered 2018-Apr-24 at 10:39

Can someone please explain why it works that way? Is it about how JS initializes variables and somehow connected to the fact that "Promise executes immediately"

Yes, it is exactly because of that. The promise will execute as soon as it is declared so in your case when you declare promise1 it automatically waits for 1 second and promise2 the same. If you want to wait one second after the first action is done you have to declare the promise inside the then block (as you did in the last example). A common practice is to have functions that returns promises:

Source https://stackoverflow.com/questions/49998817

QUESTION

If objects are passed by reference how do I handle them in functional programming

Asked 2017-Dec-31 at 23:04

I have been playing with some code over the last few days and I am trying to get more into functional programming but I am at a road block. I don't understand how to handle an object. Essentially I have an object that I want to add key value pairs to. I understand in function programming you don't reassign you just make a new object with the added key value pair. I was thinking about putting the object in some type of container like 'Box'

...

ANSWER

Answered 2017-Dec-31 at 09:58

The problem is that your map callback functions return the string (the result of the assignment is the right hand side), not the object whose property they assigned to. You would need to write

Source https://stackoverflow.com/questions/48040455

QUESTION

PHPUnit Xdebug with PhpStorm Breakpoint is not being triggered unless I disable listening button

Asked 2017-Dec-01 at 20:20

I have a really strange situation where PhpStorm doesn't seem to catch my breakpoint unless I start the test with the listen button enabled, then after it starts, I then disable the button.

See screen capture below and config files.

Any ideas on what I might have configured incorrectly?

Here's what PhpStorm displays in the console while it's "hung" -

...

ANSWER

Answered 2017-Dec-01 at 20:20

Please increase number of max simultaneous debug connections in PhpStorm settings -- by default it's only 1 .. and based on the xdebug log (and after re-checking the pretty poor quality gif animation again) you seem to have some sort of sub-request going on .. which requires separate debug connection ... which IDE cannot accept as it's already reached the limit (of 1). By clicking "stop listening" the first connection is released so IDE can accept 2nd one.

Quite likely it's because of the way how your test code gets executed (PHPUnit settings, for example, although I have not noticed the expected in such case option in PHPUnit config file).

Source https://stackoverflow.com/questions/47599018

QUESTION

Why isn't this recursive definition of reduce working (JS)?

Asked 2017-Apr-25 at 21:53

I'm attempting to redefine Javascript's reduce using a recursive function. Here's my attempt, which doesn't work. If anyone can change it only slightly to make it work, that would be great because I'd understand it better. (This is an exercise in functional-javascript-workshop).

...

ANSWER

Answered 2017-Apr-25 at 14:49

You need to update the accumulator:

Source https://stackoverflow.com/questions/43613803

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install functional-javascript

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: