Support closures

[coolbutuseless]

plotly internally uses jsonlite to convert objects to JSON, and wants to serialize closures

• [] figure out what {jsonlite} is doing with closures in general
• [] figure out what {plotly} is using closures for
• [] clone it!

[msummersgill]

Here is the fork I was using to test the POC: https://github.com/msummersgill/plotly/tree/test-yyjsonr

I'm in the same boat as you, not quite sure how or why closures are being converted to JSON, but it definitely gave me a flashback to my early days of learning R and struggling with object of type 'closure' is not subsettable. like everyone else.

[coolbutuseless]

It appears that plotly is passing a function that returns the data into "toJSON()".

As far as I can tell, this isn't used anywhere.

And by default, jsonlite seems to turn a closure into an array of strings.

 f <- function(x, y, z) { a <- x + y; return(z + a * 2)}
 jsonlite::toJSON(f)

["function (x, y, z) ","{","    a <- x + y","    return(z + a * 2)","}"] 

Not sure this is going anywhere productive...