The Whiteboard - 2016-06-24

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8:45 AM

@Ixrec Exactly. There's basically three possible answers to this:

new question: is it okay in UML to have an arrow start and end on the same box?

1. You are missing an object: the parts of the two objects that refer to each other are actually a third object that either refers to both original objects or both original objects refer to it.

2. You have one object too many: the two mutually referencing objects are really just one object.

3. You actually do have a naturally circular relationship. Think nodes in a graph, etc.

@Ixrec Well no, obviously not, the poor box is gonna get hurt if it has to twist its arms like that!

I'm voting to close this question as off-topic because although the API may be used by programmers, this is not the place to ask for clarification of a company's Terms and Agreements. — BenBarnes 41 secs ago

9:13 AM

Probably one for programmers.stackexchange.com? — Brian Agnew 56 secs ago

6 hours later…

2:47 PM

Welcome to Stack Overflow. The purpose of this site is to answer technical questions with some given code, so your question seems to be too broad to be answered here. I think it would suit better in programmers.stackexchange.com Mayble you can try some solution yourself and, if you happen to be in trouble, ask it here with your code... — Xtreme Biker 17 secs ago

3:21 PM

ok, I'm factoring out a threading abstract base class from a module.

I want to try to rewrite it with TDD.

I guess first test is attempt to instantiate, and it raises an error because it's an ABC?

3:38 PM

assuming the errors cropping up are easy to fix

and all errors do crop up

3:50 PM

If the women don't find you handsome, they should at least find you handy.

If your wife's having a good time and you're not, you're still having a better time than if you're having a good time and she's not.

These quotes are relevant because they're from the Red Green Show.

Red Green? TDD? Get it?

ok, anyways, so this ABC has a couple of threading objects it delegates to...

literally "has a" :P

> and all errors do crop up

Not sure about the veracity of that...

4:07 PM

threading is notorious for rare race conditions that you just cannot replicate

I'm just about ready to start copying and pasting...

I need a red light...

does it work now?

the test passed, but the object doesn't "work" because it completely lacks the rest of the functionality.

I'm going to test a little more abstractly, changed the test name from test1 to test_must_implement_action

bestbuy.com/site/…

I mean does the module work

4:11 PM

Good programming laptop? IDE's and what not? Does it look possible to game on? Looks like a fair price to me, just want to know what you pros think

the one I'm factoring it out of? yes.

@EcstaticSnow you should probably take that to HWRecs.SE.

(But it looks decent, I wonder what Asus's reputation is for running Linux though...)

Brexit's causing us to do a code freeze, so I'm trying to get dev work done in the meanwhile.

@EcstaticSnow Intel HD Graphics is generally not good for games, 256GB is kind of a small HD for development work IMO

Pls continue the discussion on hardware here: chat.stackexchange.com/rooms/28945/the-rec-center

I'm trying to have an actual software architecture discussion with @ratchetfreak

There's a similar consumer thread written by a really smart guy with excellent tests. Maybe I should borrow his code (can't just merge code, his delegates to a thread object, mine is a thread)

I'm acting more like a rubber duck I think

well, I'm trying to get sharper, critique my ideas please

4:35 PM

ok, I'm just starting to copy and paste in methods now...

5:14 PM

I think I've found a useless method...

5:27 PM

Well, not useless, but probably shouldn't be public...

Where could i find downloadable java netbeans sample projects

Is there a Java room on StackOverflow? I don't do Java, and I seem to be the only one around...

Somebody here was a fan of monoids.

Citation: Negation in bounded commutative DRℓ-monoids. Contains the property ¬(x+y)=¬x−y=¬y−x=¬y−¬¬x=¬x−¬¬y, which makes no sense whatsoever if "negation" isn't the extension to monoids of "multiplication by –1". — Peter Shor 18 mins ago

5:44 PM

So since the internal user was the only user of the external function I just unfactored the public function to the internal implementation.

whats on.....:)

This has got to be the most beautiful Online REPL of all the Online REPLs: try-hy.appspot.com

It's an Online REPL for Hy, a little Lisp that integrates deeply with Python. (Hy is to Python what Lisp-Flavored Erlang is to Erlang, I guess.)

6:00 PM

Cool

@aaronchall maybe your pile of shit just isn't big enough yet. happens.

Tweeted by KentBeck on June 24, 2016 at 4:59 PM in reply to aaronchall

There.

Hey, guys, IT Doesn't Matter

@AaronHall That's cool for you! Also, Kent is a great source of one-liners.

@AaronHall misleading clickbait title aside, he's got a point

> Behind the change in thinking lies a simple assumption: that as IT’s potency and ubiquity have increased, so too has its strategic value. It’s a reasonable assumption, even an intuitive one. But it’s mistaken.

HBR. pft.

1 hour later…

7:22 PM

Hey, 90.57% coverage, alright.

83% coverage... :(

7:57 PM

94% coverage... getting close...

96%!

missing 2 lines...

lucky you writing a program where 100% coverage is feasible

what's it for?

@AaronHall Sorry

8:20 PM

98%!

I'm factoring out this ConsumerThread ABC from my report stuff into a utils.threading module.

It has an abstract method, thread.action(item) -> True if task finished, if False, keep trying to action it.

8:55 PM

So my test case actually has to implement thread.action and provide an object to serve as the 'item' that can be 'item.finished' (or whatever thread.action looks for.)

I think I could make it a little simpler if I understood the threading object a little better.

for example, I have a thread.closed() method, but the thread already has a is_alive() method.

Usage:

    >>> t = MyConsumerThread() # starts automatically on init
    >>> item = 'a' # the action method must know when 'a' is finished
    >>> t.put(item) # puts the item in the thread's queue
    >>> t.close() # don't wait until finished to close the thread

    or

    >>> t.close_when_finished() # wait until finished to close the thread

9:15 PM

pretty cool, right?

1 hour later…

10:28 PM

right?

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