6 ms·

One observation from watching Go and Rust gain popularity is that having an online code evaluation tool like https://play.rust-lang.org/ https://play.rust-lang.

by kornish 10y ago

One observation from watching Go and Rust gain popularity is that having an online code evaluation tool like https://play.rust-lang.org/ https://play.rust-lang.org/ or https://play.golang.org/ https://play.golang.org/ can do wonders for adoption. People can experiment in a sandbox without having to hop into a development environment, and peers have an easier time debugging by easily sharing and reproducing problems. For anyone interested in trying out F# online, looks like Microsoft Research has such a tool: http://www.tryfsharp.org/Create http://www.tryfsharp.org/Create. Unfortunately looks like you have to create an account of some sort to share scripts, so these alternatives might be better: https://repl.it/languages/fsharp https://repl.it/languages/fsharp http://tryfs.net/ http://tryfs.net/

fsloth 10y ago
I like this one https://dotnetfiddle.net/ https://dotnetfiddle.net/ (F# needs to be selected as a language)
- tmccrmck 10y ago
  I like playing with F# in a Jupyter notebook. https://notebooks.azure.com/ https://notebooks.azure.com/
steego 10y ago
If you want to try an F# to JavaScript compiler. Try Fable: http://fable.io/repl.html http://fable.io/repl.html
smoothdeveloper 10y ago
there is also http://try.websharper.com/ http://try.websharper.com/ for toying with the language and websharper.
aloisdg 10y ago
Glot.io includes F# https://glot.io/new/fsharp https://glot.io/new/fsharp
smortaz 10y ago
A more recent Microsoft offering for trying F# (or Python, R) is: https://notebooks.azure.com https://notebooks.azure.com Click on the Intro to F#. Or try the user contributed notebook: https://notebooks.azure.com/library/HorsesForCourses https://notebooks.azure.com/library/HorsesForCourses [msft]
- sremani 10y ago
  Literate Programming with Notebooks is where no other .net based language comes close to F#. I will spend more time on F# notebooks, this is great!
  - t1amat 10y ago
    Check out Xamarin Workbooks* for the C# equivalent. (*): https://developer.xamarin.com/guides/cross-platform/workbooks/ https://developer.xamarin.com/guides/cross-platform/workbook...
- Rapzid 10y ago
  Sadly I'm neither able to clone or open an existing clone for the F# notebook :(
  - smortaz 10y ago
    Hmmm... when I click on the Horses link, I see its 3 notebooks, with a blue clone & run button. When clicked, I get prompted to sign in (requires any msft account like outlook, xbox, hotmail, ...). Once you sign in (or create an account), you'll end up in Docker/Jupyter instance with the 3 notebooks. Clicking on the first one and doing a Run All, should give you: http://imgur.com/a/JgcqP http://imgur.com/a/JgcqP What happens when you click the Intro to F# sample on the front page? It should render the notebook and if you clone, it should prompt to sign in as above. Hope this helps.
    - Rapzid 10y ago
      When I choose to connect to an existing notebook nothing happens. When I choose to clone I get to the login screen by clicking the login button does nothing :| EDIT: I'm now able to login. It brought up a little redirect modal after entering my user name which due to my typing was apparently getting canceled. The notebook load, but I get now chart.Plot output. I haven't used jupyter notebooks much. They seem cool, but not as cool as light tabels insta-repl.
DaiPlusPlus 10y ago
I tried tryfs.net, but the Hello World sample doesn't work in Chrome: uBlock Origin blocks some scripts, but even after disabling uBlock it still doesn't render anything to the output area, it just flashes.
stcredzero 10y ago
One observation from watching Go and Rust gain popularity is that having an online code evaluation tool like https://play.rust-lang.org/ https://play.rust-lang.org/ or https://play.golang.org/ https://play.golang.org/ can do wonders for adoption. One of the things Go does right is the download-hello-world-compile-run experience. Especially now, since they now default GOPATH. One of the things that Go does wrong for popularity is the opinionated directory structure based environment mechanism. It has some advantages for large programming projects, but the way it runs counter to many programmer's expectations is seen by many as a wat!? If Go had some way of mitigating that and the lack of generics, then the Hello World experience would be better for more people. (For admittedly shallow reasons, IMHO. I think that Go is pretty good the way it is. I haven't yet felt a need for generics yet in my MMO project.)
- saghm 10y ago
  > If Go had some way of mitigating that and the lack of generics, then the Hello World experience would be better for more people. Does the lack of generics really impact the experience of "Hello World"? I don't think I've ever seen generics used in a "Hello World" example even in languages that have them.
  - stcredzero 10y ago
    No, but if you believe the ramblings of the standard HN commenter who complains about Go, very soon afterwards the lack of generics has driven them to gnashing teeth and rending hair.
  - eptcyka 10y ago
    Whenever I evaluate a language past the hello world stage, I try to do something more complex. Which is where the generics come in. Imagine for a second that I may want a hashmap with a custom key/hash function (most often it would actually be a set) for my own datatype. I can't just use the built in hashmap _language construct_ (the hashmap is it's own, very special type), I either have to write a hashmap implementation myself or wrap a hashmap in it's own type and have custom getters and setters which would extract a key from my custom type that is intended to be stored in the map. It might be more go to do said things, but then it just means that it's more go to write code that is more likely to be buggy.
finnnk 10y ago
You might also want to look at Pex4Fun which has a bunch of little coding challenges (you'll need to select F# if it isn't already). Hit 'Ask Pex' to get going. http://www.pexforfun.com/Page.aspx#learn/ http://www.pexforfun.com/Page.aspx#learn/
RyanHamilton 10y ago
I've wrote a java REPL that runs locally but can upload to remote: http://jpad.io/example/1E/fetch-headlines-using-jsoup http://jpad.io/example/1E/fetch-headlines-using-jsoup My issue with the online editors is that it restricts your ability to access files, add dependencies and modify your local machine. If anyone would like an online version I'd be interested to hear why?

by kornish 10y ago

fsloth 10y ago

I like this one https://dotnetfiddle.net/ https://dotnetfiddle.net/ (F# needs to be selected as a language)

tmccrmck 10y ago
I like playing with F# in a Jupyter notebook. https://notebooks.azure.com/ https://notebooks.azure.com/

steego 10y ago

If you want to try an F# to JavaScript compiler. Try Fable: http://fable.io/repl.html http://fable.io/repl.html

smoothdeveloper 10y ago

there is also http://try.websharper.com/ http://try.websharper.com/ for toying with the language and websharper.

aloisdg 10y ago

Glot.io includes F# https://glot.io/new/fsharp https://glot.io/new/fsharp

smortaz 10y ago

A more recent Microsoft offering for trying F# (or Python, R) is: https://notebooks.azure.com https://notebooks.azure.com Click on the Intro to F#. Or try the user contributed notebook: https://notebooks.azure.com/library/HorsesForCourses https://notebooks.azure.com/library/HorsesForCourses [msft]

sremani 10y ago
Literate Programming with Notebooks is where no other .net based language comes close to F#. I will spend more time on F# notebooks, this is great!
- t1amat 10y ago
  Check out Xamarin Workbooks* for the C# equivalent. (*): https://developer.xamarin.com/guides/cross-platform/workbooks/ https://developer.xamarin.com/guides/cross-platform/workbook...
Rapzid 10y ago
Sadly I'm neither able to clone or open an existing clone for the F# notebook :(
- smortaz 10y ago
  Hmmm... when I click on the Horses link, I see its 3 notebooks, with a blue clone & run button. When clicked, I get prompted to sign in (requires any msft account like outlook, xbox, hotmail, ...). Once you sign in (or create an account), you'll end up in Docker/Jupyter instance with the 3 notebooks. Clicking on the first one and doing a Run All, should give you: http://imgur.com/a/JgcqP http://imgur.com/a/JgcqP What happens when you click the Intro to F# sample on the front page? It should render the notebook and if you clone, it should prompt to sign in as above. Hope this helps.
  - Rapzid 10y ago
    When I choose to connect to an existing notebook nothing happens. When I choose to clone I get to the login screen by clicking the login button does nothing :| EDIT: I'm now able to login. It brought up a little redirect modal after entering my user name which due to my typing was apparently getting canceled. The notebook load, but I get now chart.Plot output. I haven't used jupyter notebooks much. They seem cool, but not as cool as light tabels insta-repl.

DaiPlusPlus 10y ago

I tried tryfs.net, but the Hello World sample doesn't work in Chrome: uBlock Origin blocks some scripts, but even after disabling uBlock it still doesn't render anything to the output area, it just flashes.

stcredzero 10y ago

One observation from watching Go and Rust gain popularity is that having an online code evaluation tool like https://play.rust-lang.org/ https://play.rust-lang.org/ or https://play.golang.org/ https://play.golang.org/ can do wonders for adoption. One of the things Go does right is the download-hello-world-compile-run experience. Especially now, since they now default GOPATH. One of the things that Go does wrong for popularity is the opinionated directory structure based environment mechanism. It has some advantages for large programming projects, but the way it runs counter to many programmer's expectations is seen by many as a wat!? If Go had some way of mitigating that and the lack of generics, then the Hello World experience would be better for more people. (For admittedly shallow reasons, IMHO. I think that Go is pretty good the way it is. I haven't yet felt a need for generics yet in my MMO project.)

saghm 10y ago
> If Go had some way of mitigating that and the lack of generics, then the Hello World experience would be better for more people. Does the lack of generics really impact the experience of "Hello World"? I don't think I've ever seen generics used in a "Hello World" example even in languages that have them.
- stcredzero 10y ago
  No, but if you believe the ramblings of the standard HN commenter who complains about Go, very soon afterwards the lack of generics has driven them to gnashing teeth and rending hair.
- eptcyka 10y ago
  Whenever I evaluate a language past the hello world stage, I try to do something more complex. Which is where the generics come in. Imagine for a second that I may want a hashmap with a custom key/hash function (most often it would actually be a set) for my own datatype. I can't just use the built in hashmap _language construct_ (the hashmap is it's own, very special type), I either have to write a hashmap implementation myself or wrap a hashmap in it's own type and have custom getters and setters which would extract a key from my custom type that is intended to be stored in the map. It might be more go to do said things, but then it just means that it's more go to write code that is more likely to be buggy.

finnnk 10y ago

You might also want to look at Pex4Fun which has a bunch of little coding challenges (you'll need to select F# if it isn't already). Hit 'Ask Pex' to get going. http://www.pexforfun.com/Page.aspx#learn/ http://www.pexforfun.com/Page.aspx#learn/

RyanHamilton 10y ago

I've wrote a java REPL that runs locally but can upload to remote: http://jpad.io/example/1E/fetch-headlines-using-jsoup http://jpad.io/example/1E/fetch-headlines-using-jsoup My issue with the online editors is that it restricts your ability to access files, add dependencies and modify your local machine. If anyone would like an online version I'd be interested to hear why?