Really, people need to treat exceptions right.

I hate one exception being logged 6 different times because everyone thinks it's there job to log it

better than rethrowing exceptions that are different, and not propogating the original

i've had "ConfigurationNotFoundException"s thrown at me due to a NPE that's 6 levels deeper

that was fun...

Is this a good question for you guys?

@JimmyHoffa - They are probably using the TPS Report logger.

@WorldEngineer It's not a request, it's a question about where to post requests :)

I'm not looking for the answer, it's not my question; I'm trying to find out if the question is on-topic on Programmers so I can move it there

Ok, thanks

To date I have 330 profile views, not much me thinks

Otherwise I'll just try posting refactors of other people's open source code back to them like I've started. Surely someone has to like it other than I. I should minify it so nobody complains it's unreadable since minified should be

quick question: I'm writing some JQuery and having to operate on a lot of different elements on the page, so I'm doing a whole swag of $('[id*=xx]') selectors... for elements that I'm working with all the time, should I just pull these out into "globals" so I reference an object rather than having to do the selectors all the time?

or is that a huge no-no

Cache if the choices won't change otherwise use the selectors like if com elements get added/removed

Dom*

Hey @Deco how do you feel about using a hot new js lib that will clean up the code you hacking right now :D

@JimmyHoffa that depends... I might be very interested

this page i'm doing has 80 odd elements on it

and so far I've got >800 lines of Jscript

because each element has change events that effect other elements, such as hide/show, enable/disable, prepopulate, etc..

so i'm doing a lot of selectors

but generally across the same common subset of elements

The way my lib works, you create small functions that take in a value, do whatever then return success or failure with that or a new value, then you compose all of these functions together with then and or. If a function returns failure thens chained off it fall through until an or, and the or is executed then, though as long as each function succeeds the following function chained gets the value it returned

It good for workflows, could be used for dynamicism in your rules engine sounds like you need

Rules around what to select for eg

var fromCool = function(a) { return a.id === 'cool' ? Success($.('#yay')) : Failure(a); }; var fromLame = function(a) { return a.id === 'lame' ? Success($.('aww')) : Failure(a); }; var show = function(a) { a.show(); return success(a); }; var lameOrCool = fromCool.or(fromLame); $.('#cool').click(lameOrCool.then(show));

@Deco think about it

...because everyone needs to stop worrying and learn to love the monad

Var showLame = fromLame.then(show); var showCool = fromCool.then(show); showCool.or(showLame) is equal to lameOrCool.then(show). So you get all these small pieces you can quickly compose differently wherever you need them

@JimmyHoffa - I'll check it out.. got a bitbucket/github I can see?

@Deco Not yet. I can give you the lib but pay attention to the interface I described more than the implementation, unless you're familiar with monads the implementation would likely take a lot of mental parsing to get your head around unless you're a javascript mastah

i'm not a mastah

nfi about Monads either :S

have you got an example.html too? I'm a noob :<

No worries, like I said, pay attention to the interface, the interface is simple

one moment @Deco I'll toss something together

@JimmyHoffa cheers

Is monad similar to closure? I dont wanna look it up either (I'm being lazy)

nah, monad is a whole 'nother story

I'm also impressed you phone typed in Javascript @JimmyHoffa

@Deco you there?

jsfiddle.net/VYxsU

(it doesn't work in jsfiddle, but there's the machinad.js javascript file and the example.html file for you to poke around with)

just look at the javascript in the html for clues to how to use the then/or functions to compose things together

and the success/failures to control flow

@JimmyHoffa cheers for that

the "preview" part of JSFiddle is blocked by my proxy

(stupid work)

so i'll copypasta and play locally

Thanks <3

Yep. Let me know if it comes in handy at all or you have questions

ahhhhh I get how it works

very nice little library there @JimmyHoffa

Thanks :)

now I have to think how to refactor some of my stuff to actually use it properly, without getting myself into a huge mess

Oh, also @JimmyHoffa - If I use this, what license do you have it under (if any)?

uh, I demand a pint. That's totally aside from the license though, no license right now. I'll likely use an MIT or BSD license if any. For now call it a DBAD license dbad-license.org

I'll send you an e-pint for now, as you're not physically near me

@Deco the key is to identify the things you'll want to do and conditionals and break them up into individual functions then compose all of them together at the end. One of the valuable things of functional programming is it forces you to start by designing regarding the functions

forces you to start with the details

@JimmyHoffa - my issue at the moment is I'm basically just literally translating from one framework DSL to Javascript

we have an internal legacy framework that uses XML to perform this sorta stuff, so I'm just doing a read-write IO in my brain from that language -> Javascript.. I also have until Friday to finish :(

3420 lines (statements) that all do something

pflech

they're all fairly straightforward but still >lots< of them

yeah.. that's a ton of code to hash. Hopefully you can identify small common pieces and make it less code.

Here's an example for you, just so you can share some of my pain:

<if test="pathEqual" element="//errorFlag" value="1"><if test="pathEqual" element="//prompt01" value="1"><setVis type="show" element="warning01"/></if></if><else><setVis type="hide" element="warning01"/></else>

some of these have 20+ levels of nesting and span 15-20 pages

ah, exactly what I wrote that library for

to avoid the horrible mess of state machines

I've condensed the first ~2000 lines down to 650 in javascript now, which I'm well proud of considering I'm really a noob at the advanced features of javascript

they always end up with a ton of cases nested inside of cases inside of cases, this way you just define the functions of what to actually do, and then compose it all from tiny pieces into larger more simple pieces bit by bit

Is this style based on functional programming?

100%

it's a rip from Haskell

ah. I've never looked at functional programming - been meaning to though

your xml there would be something like:

Iduno, that xml is a trainwreck

lol

I hate state machines

yahuh..

and it's not just one or two things

the body onload is 250 lines so far, and i've only done half of it

I have to refactor as this is hideous

Yeah, state machines always are..

Which one is more of a "Don't tamper with/remove this license, but do anything else you want" license, MIT or BSD?

They're both kind of like that I think.. not sure which is less restricted off hand though, thinking BSD

I think I'm going to just tack on a a DBAD license with my name in it and a tag line "All redistributions of this work either modified or not must contain the aforementioned license in an unmodified form."

Subtle alterations to the DBAD license basically just requesting attribution. github.com/JimmyHoffa/Machinad/blob/master/machinad.js

interestingly DBAD requires me to name it differently since I altered it

@Deco: There ya go, now it's got a license so you can know what to abide by if you do happen to use it.

reddit.com/r/javascript/comments/18ggcm/…

My pseudonymity is now officially shot.

Doesn't feel good. Don't know how the new generation is so comfortable without it.

@MichaelT I think too many people actually take that belief that you quoted towards pseudonymity, but it's total hogwash: Until this morning there was no way for the public at large to know the name of the person using my pseudonym. Private companies knew it, and private companies could likely buy it from those private companies. But that means it's all still private, so I did have privacy. Now it's public.

@GlenH7 thanks :) I already know a few changes I should really make to make it better

but whatever, why waste my time if people don't find useful the basic idea, and there's only one way to find out if they do.

I'm not even a front-end or javascript guy, in reality I'll probably never use it. Just wrote it because trying to bring the error monad to a larger audience than haskell couldn't be done decently in C# without parametric polymorphism, but javascript can pretend to have parametric polymorphism just because it's dynamic.

And actually I have now compromised two pseudonyms trying to publicize this thing.. balls. Whatever.

The beauty of the pseudonym, I can always just make up another

Interesting, I guess I have no idea how reddit works because my post seems to have disappeared from there..

lame.

I see, reddit has downvoted my library

Guess I suck at JS

You are probably more interested in uploads than up/down votes. Upvotes seem unlikely - not a lot of javascript threads out there crying out for error monad libraries.

Plus you didn't make it a JQuery plugin

@psr that's why I made it, they actually are, they just don't know it

there's a grip of state-machine style libraries that are cropping up a colleague showed me

because js folks (especially on the node side) are trying to make state-machine's easier

and a JQuery plugin eh? why would this ever need to be hacked into JQuery?

Joking. Really a snide comment on developers who want everything to be a JQuery plugin.

Since libraries are only useful to people who already know they need them, this seems Quixotic

@JimmyHoffa :( :( reddit is blocked at work

what license is it??

@Deco github.com/JimmyHoffa/Machinad

@psr no C# dev knew they needed linq

That's just how monads are, things you didn't expect or imagine because they're so out there, until you're using it and realize it's awesome

@JimmyHoffa I'm confused - the first line is about Ryan Swindle? I thought you were Jimmy Hoffa? :P

Unless you're Jimmy Hoffa by day and Ryan Swindle by night!?

Also, I really want to use it just so I can check in a file with DBAD license on it :D