Javascript questions which don't deserve their own thread.

«‹›58 »

The Something Awful Forums > Discussion > Serious Hardware / Software Crap > The Cavern of COBOL > Javascript questions which don't deserve their own thread.

thathonkey: Jul 17, 2012; rickroll

Wheany posted:

And I just want to warn you that as a new convert I just might become insufferable.

It's cool, we all are

# ? May 12, 2013 15:12

Adbot: ADBOT LOVES YOU

# ? May 20, 2013 12:30

Maluco Marinero: Jan 18, 2001; Damn that's a
fine elephant.

Wheany posted:

And I just want to warn you that as a new convert I just might become insufferable.

Tell me about it. My first work where I dove into a 100% promise driven approach was this WebSQL/IndexedDB API I've just started on: http://malucomarinero.bitbucket.org/johodb/

It's blowing me away how powerful promises are, especially when you're processing a stack of asynchronous actions, and then Q will wait for them all to finish and then output an Array of the lot in sequence. It such a clean and logical way to deal with this stuff, and greatly simplified my life in writing an API for asynchronous storage.

# ? May 12, 2013 15:55

Suspicious Dish: Sep 24, 2011

I'm not really a fan of Crockford, but that talk didn't really explain Monads at all. It seems he, too, fell under the curse.

Like, how was that a "loophole" that allowed Haskell people to do anything? The utility of it as a general pattern seems like it would belong right at home in the Gang of Four book.

I understand Promises, but it seems he had to stretch the definition of the generic pattern in order to give it the "monad" label. I'm disappointed that he didn't really give any concrete examples for promises either, when there's a lot to show off about how the composition works in practice, just a giant code dump with his own weird-o "break" / "keep" / "fate" stuff that seemed to exist just to confuse.

2/10 F- would not watch again

# ? May 12, 2013 16:13

Don Mega: Nov 26, 2005

Edit: I got the help I needed from another source.

Don Mega fucked around with this message at May 17, 2013 around 17:39

# ? May 14, 2013 03:17

Strong Sauce: Jul 2, 2003; You know I am not really your father.

Anyone know how to simulate hanging a cluster worker in Node.js so I can test out hearbeat monitoring?

# ? May 17, 2013 02:48

Adbot: ADBOT LOVES YOU

# ? May 20, 2013 12:30

ufarn: May 30, 2009

Couldn't find a d3.js question, so I'll try my luck here.

I load a dataset from a csv file:

Javascript code:

d3.csv("data.csv")
    .row(function(d) {
        return {
            amount: +d.amount,
            sold: formatDate.parse(d.sold)
        };
    })
    .get(function(error, rows) {
    //
});

My question is how to perform a d3.min(), or d3.extent(), operation on one rows.amount column. Does anyone know how? I assume there's a d3 method involved that, in theory, simplifies the generic JavaScript.

EDIT: I think I found the JavaScript way of doing things; I don't know if this is what they want people using d3.js to do, though:

Javascript code:

var amountColumn = rows.map(function(d) {
    return [+d["amount"]];
);

ufarn fucked around with this message at May 18, 2013 around 23:07

# ? May 18, 2013 22:51

«‹›58 »

The Something Awful Forums > Discussion > Serious Hardware / Software Crap > The Cavern of COBOL > Javascript questions which don't deserve their own thread.