opal/opal

Ruby in the Browser

Jan Biedermann

@janbiedermann

interrupted by ruby ast, if you js #{ ruby } more js

and the problem is exactly there, to understand js without parsing it :(

Simon George

@sfcgeorge

If the JS is just a string then surely you can strip it, so that wouldn't mistakenly be treated as multiline.

Jan Biedermann

@janbiedermann

and the ruby ast in between?

so its still ast nodes, of type :str, containing partial js

thats a :str

oh, ok, so for this case:

`$(#{selector})`

there is a tree :xstr with children:
:str (first part of js) :begin (ruby ast) :str (last part of js)

that are :strs

Jan Biedermann

@janbiedermann

so the 'mulitline' her is not the whitespace in the :strbut multiple :str, was, now with above fix, to look in the :str for a \nmulitline js is detected.
But @sfcgeorge you have a point, as minified js is minified to one line strings with no whitespace, but how would that stripping of whitespace benefit the situation here?

Mitch VanDuyn

@catmando

@/all question just came up... there is a Promise.when which could be called Promise.when_all, so why is there not a Promise.when_any?

G. Gibson

@mistergibson

So, is it impossilbe to work with a string that is ASCII8BIT ?

G. Gibson

@mistergibson

oh - got it - nevermind

G. Gibson

@mistergibson

Does anyone know of some example code for working with Buffer class?

Jamie Gaskins

@jgaskins

@catmando Bowser has a PR open for an implementation of ES6-style promises including Promise.race, which sounds like what you're looking for clearwater-rb/bowser#9

I just rewrote it a few weeks ago and rebased, so it's not actually an 18-month-old implementation I just haven't merged yet. :-) I've been considering merging it for a long time, but it removes all of Bowser's use of Opal's Promise implementation in favor of an API closer to what newer browsers offer natively, which is kinda scary.

Jan Biedermann

@janbiedermann

@elia @iliabylich and everybody else working on opal, opal 0.11 is a blessing! Its a giant step forward to ruby on the client! Its just amazing what bugs i find in existing 0.10 code and do keep wondering, "How did this ever work at all?"
I am amzed, fantastic :+1: :+1: :+1: :smile:

Elia Schito

@elia

@janbiedermann :smile: printed and framed! :laughing:

G. Gibson

@mistergibson

@elia : even though I've been into Opal a short time, I can second that sentiment. Opal is truly amazing and it has taken me in a whole new direction.

Elia Schito

@elia

@mistergibson I should add a "praise" section to the home page :smile:

G. Gibson

@mistergibson

lol, yeah

Billy.Zheng

@zw963

Thank @elia a lot for wonderful Opal. Hope see Opal 1.0 is released in the future.

G. Gibson

@mistergibson

Question: can I call a ruby object from js directly? example: @timer_handle = 'setInterval(#{self}.tick(),2000)' ... ?

Simon George

@sfcgeorge

Yes :)

do_later = $$[:setTimeout] # Accessing the "setTimeout" property
do_later.call(->{ puts :hello}, 2000)
do_later.call(->{ tick }, 2000)
do_later.call(method(:tick), 2000) # maybe

G. Gibson

@mistergibson

Sweet , thanks :)

ok, but not the way I expressed it in my question right?

Simon George

@sfcgeorge

This syntax also works $$.setTimeout(method(:tick).to_proc, 2000) http://opalrb.com/try/?code:def%20tick%0A%20%20puts%20%22yo%22%0Aend%0A%0A%24%24.setTimeout(method(%3Atick).to_proc%2C%20500)

G. Gibson

@mistergibson

Excellent, and much simpler than I thought it was - thanks again :)

Simon George

@sfcgeorge

That's from Ruby calling a JS function. If you mean from JS calling a Ruby function then no I don't think so. But you can do from Ruby inline JS calling Ruby

`setTimeout(#{method(:tick).to_proc}, 500)`

Note the backticks

G. Gibson

@mistergibson

ok, sure - that's cool

Simon George

@sfcgeorge

This post has more
https://dev.mikamai.com/2014/03/12/using-native-javascript-objects-from-opal/
Here is some docs
https://github.com/opal/opal/blob/master/stdlib/native.rb

G. Gibson

@mistergibson

That all seems very straight forward. at first I was just unsure about HOW to refer to an object/method with respect to the native call. Thanks for clarifying.

Elia Schito

@elia

Thank @elia a lot for wonderful Opal. Hope see Opal 1.0 is released in the future.

@zw963 Thanks! The plan is to have the next major release be 1.0

Forrest Chang

@fkchang

what versions of opal are people running, esp. in production?

G. Gibson

@mistergibson

@fkchang : I use a github pull for mine

Elia Schito

@elia

@fkchang we're still on 0.10 but have a branch almost ready for 0.11

Forrest Chang

@fkchang

@elia thanks, I want to update (long over due) opal-console handling compatibility between different opal versions is rather difficult our production app is 0.8 don't want to strand too many people, but want to move towards supporting 0.11

Colin Gunn

@balmoral

@fkchang in production on 0.11

Mitch VanDuyn

@catmando

@fkchang as I think u know hyperloop is dropping support for opal < 0.11 .

@adamcreekroad is getting catprint up on latest hyperloop and opal. No issues so far

G. Gibson

@mistergibson

I notice a lot of people went with React

What is the best (most comprehensive) UI framework out there?

Your opinions please :)

Elia Schito

@elia

@mistergibson three names off the top of my mind: http://ruby-hyperloop.org https://inesita.fazibear.me http://clearwater-docs.herokuapp.com

G. Gibson

@mistergibson

@elia : thanks

Colin Gunn

@balmoral

@mistergibson @elia one more UI (and full stack) framework in early stages is https://github.com/balmoral/robe. It’s been a personal learning project, and good enough to use in a restricted beta production app. I’m not currently able to provide much support to others, and there’s no documentation or specs yet! The README hypes it up a bit, mostly for self-encouragement. Feel free take a look and use anything that’s useful.

G. Gibson

@mistergibson

Thanks Colin

G. Gibson

@mistergibson

Hyperloop looks pretty cool, but someone said they are dropping support for Opal?

Jan Biedermann

@janbiedermann

yes, hyperloop drops support for opal 0.10
@mistergibson ruby-hyperloop supports opal 0.11 :tada:

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