FLUX

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FLUX is an open source programming language created in 2014 by Paul O’Shannessy.

Source code:

git clone https://github.com/facebook/flux

#147on PLDB

10Years Old

187Repos

Application Architecture for Building User Interfaces

FLUX website
FLUX is developed on GitHub and has 17,320 stars
PLDB has 2 documentation sites for FLUX: fluxcd.io, docs.influxdata.com
There are at least 187 FLUX repos on GitHub
FLUX first developed in https://github.com/fluxcd
file extensions for FLUX include fx and flux
The Google BigQuery Public Dataset GitHub snapshot shows 792 users using FLUX in 853 repos on GitHub

Example from the web:

// concrete node signatures
Listen ()
  => (int socket);

ReadRequest (int socket)
  => (int socket, bool close, image_tag *request);

CheckCache (int socket, bool close, image_tag *request)
  => (int socket, bool close, image_tag *request);

// omitted for space:
// ReadInFromDisk, StoreInCache
Compress (int socket, bool close, image_tag *request, __u8 *rgb_data)
  => (int socket, bool close, image_tag *request);
Write (int socket, bool close, image_tag *request)
  => (int socket, bool close, image_tag *request);
Complete (int socket, bool close, image_tag *request) => ();

// source node
source Listen => Image;

// abstract node
Image = ReadRequest -> CheckCache -> Handler -> Write -> Complete;

// predicate type & dispatch
typedef hit TestInCache;
Handler:[_, _, hit] = ;
Handler:[_, _, _] =
ReadInFromDisk -> Compress -> StoreInCache;

// error handler
handle error ReadInFromDisk => FourOhFor;

// atomicity constraints
atomic CheckCache:{cache};
atomic StoreInCache:{cache};
atomic Complete:{cache};

Feature	Supported	Token	Example
Comments	✓		// A comment
Line Comments	✓	//	// A comment
Semantic Indentation	X

FLUX - Programming language

Language features