The Whiteboard

3:35 AM

In java, while subclassing, instance method override and static method hide. I did not get the meaning of override and hide. what is the difference?

Duga

3:58 AM

I do not believe this question fits into SO allowed topics. It may be on topic for Programmers site. Check their meta for more information. — PM 77-1 20 secs ago

Am I able to migrate this to programmers or should I simply delete it? — Constantin 12 secs ago

Thanks, based on the meta link you provided, I think this post should be migrated to programmers, I have flagged this for moderator attention. — Constantin 59 secs ago

Robert Harvey

5:14 AM

@overexchange docs.oracle.com/javase/tutorial/java/IandI/override.html

Mathematics

7:11 AM

Hi

Duga

8:26 AM

You need to ask a specific question in order to get the best out of stack overflow - to discuss different methods of technology perhaps try programmers.stackexchange.com "Q&A for professional programmers interested in conceptual questions about software development" — Kevin S 20 secs ago

Duga

8:51 AM

@KevinS programmers.se is not a good place for discussion-type questions. We follow the same QA format as here. — MetaFight 18 secs ago

enderland

1:16 PM

@Mathematics Good [morning / evening / day]!

jane

hi!!

enderland

@jane Good [morning / evening / day] to you too!

jane

it's evening here now, how are you today? it's kinda lonely the last time I left this chat room it's lively, now there's only two of us

enderland

A lot of the "regulars" are in here during business hours in the USA

Respect My Authoritah

three

Jimmy Hoffa

1:25 PM

happy coffee day

3

jane

oh yeah, hi!

you guys are programmers?

I wanna ask some question about objective c if you don't mind :)

Respect My Authoritah

It's morning here on the east coast :)

Telastyn

except for Ashley

Jimmy Hoffa

@RespectMyAuthoritah it's morning everywhere. Except where it's happy hour.

jane

hi @Telastyn :)

Respect My Authoritah

1:27 PM

@JimmyHoffa It's coffee hour

same difference

jane

you drink coffee at evening as well?

Jimmy Hoffa

Not really sure who among the regulars knows objective C to any quality, @MichaelT likely does. We can help out with conceptual stuff but you may need to wait 'till he shows his face to get any specifically objective C syntax type stuff answered - though SO can answer a lot of that directly

enderland

@MichaelT knows a lot about pretty much everything

Telastyn

I indeed know no objective C

Jimmy Hoffa

@MichaelT for Whiteboard principle chief staff lead architect engineer

3

jane

1:30 PM

ooohh, I think it's not about the syntax, my question is about the capability of one the classes in objective c though, specifically uibezierpath

but I could wait :)

Jimmy Hoffa

@jane likely a good question to ask directly on SO - you'll get a fast answer from someone there who's memorized the libraries

jane

@Telastyn what languages do you know?

Jimmy Hoffa

@jane don't worry about @Telastyn, he's just a bot @MichaelT wrote in dc

Telastyn

pssh

jane

lol

no, seriously though, now I'll ask anyone that's here.. what languages do you know guys?

Jimmy Hoffa

1:33 PM

@jane I have a scar forming on my pinky

jane

@JimmyHoffa why? what happened?

Telastyn

at one level or another, C#, C++, C, Java, perl, php, Tangent, Haskell, F#, JavaScript, a few SQLs... Pascal, Matlab... probably more I'm forgetting.

Jimmy Hoffa

@Telastyn I like how you included Tangent, nice touch

Telastyn

hey, if I don't know it...

jane

You guys know each other personally?

Jimmy Hoffa

1:37 PM

How can you know a bot? AI isn't that realistic yet

jane

Oh yea... haha

Telastyn

IRL? not at all. Online? Barely.

jane

what's IRL?

Telastyn

in real life.

jane

oh

you can't know @JimmyHoffa IRL because you're a bot like what he said :)

Telastyn

1:40 PM

I believe few bots could hate humans quite as much as I do.

(HK-47 not withstanding)

Jimmy Hoffa

s/humans/liquidious fleshbags/f

user55340

@Telastyn they hate us because we like Eliza more.

Jimmy Hoffa

@Telastyn are we sure GladOS is impartial and not actually hateful? If that's hate, it's definitely of a quality you probably can't match. If you can, please never start sciencing.

(Portal was in the horror genre, right?)

Telastyn

no idea, never played it.

user55340

It started out as a physics engine demo. Someone said "this is fun" and it became a game.

enderland

1:51 PM

@Telastyn a mod account on a forum I was on before was "HK-47" heh

Jimmy Hoffa

@MichaelT and here I thought it started out as a potato..

user55340

The "see through portals" was the initial challenge for the engine. Think about the nature of that.

Telastyn

yeah, familiar with the mechanics and history

Thomas Owens

Apparently, today's flavored coffee is...coffee flavored coffee.

I don't like the flavored coffees, though. :\ But this is meta.

Jimmy Hoffa

@ThomasOwens ... huh? So you do like the coffee flavored coffee, or the flavored coffee is coffee flavor and you don't like it because it's flavored (with coffee?).

I approve of how you fit the word coffee into your first statement 3 times; nearly 50% of the total words there are "coffee", I do not however approve of the semantics of your construction...

enderland

2:07 PM

ok. rant against operating systems, but how do you get them to not be dumb when they run out of free memory (even with plenty of standby memory)?

I have this problem on Win7 and Mac OS:X

that the free memory gets close to 0mb and then the system slows way down

in spite of plenty of standby memory

which theoretically should be freed up to be used

Telastyn

eh?

Jimmy Hoffa

@enderland faster disk or turn off swapping - the ladder will in windows at least result in you nearly running out of memory and getting a message "Shit gonna get troubled in a minute...close something or I will lose my mind."

enderland

This happens, and then apps slow to a crawl

@JimmyHoffa you mean my 5400rpm encrypted disk isn't good for performance? say it aint so!

Jimmy Hoffa

(it will too - windows running out of memory without being allowed to page to disk will start getting gonzo, so heed the warning)

@enderland you could get something else for page and configure your page file to write to it (or at least make an unencrypted partition to page to)

enderland

so my page file is 1/2 my RAM, 4000mb

maybe that's the problem? it seems that recommendation is 1xRAM not 1/2xRAM

Stack Exchange

2:14 PM

“Why are there so many programming languages?”

Matt Sherman on July 29, 2015

I was asked this question twice in the past week, by colleagues who work with our clients. It’s a great question…

Jimmy Hoffa

@enderland when you get near the cap on disk and physical both - it's going to start doing a lot of swapping back and forth "need to get this location... oh it's on disk read from disk, oh crap I'm almost out of physical, need to put that back on disk write to disk, ok now I need this location...oh it's on disk...."

enderland

@JimmyHoffa I know! but why doesn't it just clear standby memory? I periodically use RAMMAP to blow away all standby memory and "magically" my system gets faster

Jimmy Hoffa

you could be seeing that if you keep your page file too small. Alternatively your page file is just slow because it's on a 5400rpm encrypted partition

@enderland what is "standby memory" ?

enderland

@JimmyHoffa as I understand, it's basically cached... stuff, that is not actively being used, but it helps launch things faster

so if you start an app, then close it, the application might sit in standby memory so when you launch it again it is "already" loaded

course my backup service using 500mb of memory probably doesn't help, either

Jimmy Hoffa

don't ask me, I don't have your problems. How much ram do you have?

enderland

2:18 PM

8gig, on 64bit win7

Jimmy Hoffa

that's plenty

enderland

I wonder if having a minimum page file size of 4gig matters

maybe the minimum size should be smaller?

Jimmy Hoffa

Perhaps you just have viruses. Yep.

Within five minutes of the Singularity appearing, somebody will suggest defragging it.

enderland

:)

the only virus I'm worried about is that our virus scanner probably goes OCD and checks every file on my computer ever 1 minute while the backup service uploads 1gb per hour

Jimmy Hoffa

@enderland either turn up your maximum to avoid swapping, or turn off your page file - to avoid swapping. With 8 gig you can get by without a page file unless it's like your work machine where you're running 80 processes and can't close them without losing work productivity

(it's not your work machine you refer to, right?)

enderland

2:22 PM

@JimmyHoffa it is my work machine (though my home computer has same problmes)

Thomas Owens

@JimmyHoffa I have not tried the coffee flavored coffee. Should I?

enderland

except my home computer has an SSD so performance problems are way not as bad

Thomas Owens

I'm about to get another cup. I was going to go for regular medium roast, though.

Jimmy Hoffa

@ThomasOwens I have absolutely no idea what you're talking about anymore. You (like|dislike) some (un?)flavored coffee. That's all I got from your sentence

Thomas Owens

@JimmyHoffa I dislike most flavored coffee. I almost always drink unflavored coffee, preferably a light or medium roast.

Jimmy Hoffa

2:23 PM

@ThomasOwens ah, well yes of course, because flavored coffee is weird.

Thomas Owens

@JimmyHoffa But today's flavored coffee is supposed to be coffee flavored, according to a coworker. It seems meta enough to warrant my attention.

Jimmy Hoffa

@enderland no idea what your trouble is- I haven't had issue with machines slowing down in years....

enderland

@JimmyHoffa not helpful :P haha

though I wouldn't wish this upon anyone, it's annoying

Jimmy Hoffa

I gave you two solutions to try :P I'm fairly confident one of them will work (how quickly do you fill up your physical memory?)

enderland

@JimmyHoffa it happens fast, I'm not really sure why though - I do have a lot of applications open

@JimmyHoffa I'm playing with the pagefile settings, but they require a reboot to take effect

Jimmy Hoffa

2:27 PM

likely a problem of which applications you're running then

enderland

Well the problem app is Lync, which slows to a crawl when around the 0mb free point

Jimmy Hoffa

I mean it when I say it's been years since I've had troubles with computers from ram exhaustion

Duga

I'm voting to close this question as off-topic because questions about software licensing are off-topic for Stack Overflow. See this meta question for more details; it does suggest that you could ask this question over on Programmers Stack Exchange — AHiggins 11 secs ago

Jimmy Hoffa

@enderland that's just an effect - no proof of cause. Maybe it's the virus scanner choking Lync with distrust, maybe Lync is just a UI that doesn't deal with ram starvation well and another application is starving your system

How much memory is Lync using?

enderland

186mb (wtf)

Jimmy Hoffa

2:29 PM

@enderland that's not bad

it's using 136 on my machine

enderland

it has written 417mb to disk and only read 13mb though, that seems.. problematic

Jimmy Hoffa

hell mmc is using 140

@enderland heh probably not

Do you have no applications using like 1.5+gb on your system?

enderland

@JimmyHoffa not even close, 338mb is my backup service and most for "memory (priate working sets)"

Jimmy Hoffa

how much free memory do you have?

enderland

right now, 1700mb (I just used RAMMAP to empty standby memory)

Robert Harvey

2:53 PM

I'm scared of the coffee-flavored coffee. Sounds like margarine with trans-fat.

durron597

Happy Coffee day!

Robert Harvey

338 MB for a backup service is obscene. What did they write it in, ColdFusion?

enderland

@RobertHarvey google suggests java :)

Robert Harvey

[sigh]

It probably has a hundred interfaces in it.

psr

3:48 PM

Happy Coffee Flavored Coffee day.

enderland

blog.zimperium.com/…

2

Robert Harvey

4:04 PM

@enderland Does that mean I have to get Zimperium’s advanced Enterprise Mobile Threat Protection solution?

Thomas Owens

6:15 PM

Let's assume I have an XSD. Let's say I have a complexType X and element X defined. Then, I have a complex type Y that is an extension of X.

durron597

@ThomasOwens take an antibiotic

Thomas Owens

I also have an element Y.

Does that mean the both <Y></Y> and <X xsi:type="Y"></X> are both valid? Is there ever a reason to not allow both?

Maybe I should write up more detail and ask a question on the main site, but I'm trying to figure out exactly how much detail I need so I can provide it.

Robert Harvey

6:34 PM

yes , i asked here also hope to get fast answer because i don't have time to complete my project work — wilyam walass 2 mins ago

> Master of computer science engineering

currently higher graduate student ,

works as lecturer ...

durron597

Don't need suggestions TylerH, nor grammar help. Simply just an answer, nothing more nothing less. — Mattyb Belcher 13 mins ago

Thomas Owens

Hell, I'm not even sure if my question makes sense. But I have someone saying that <X xsi:type="Y"> is the only way. I don't think so - if I have a thing that is of type Y, the opening tag in the XML should be <Y>.

durron597

@ThomasOwens That sounds like a Stack Overflow question not a progs one, no?

Thomas Owens

I'd consider it a design question.

Both are technically valid XML (as far as I can tell, by validating against the schema).

Jimmy Hoffa

6:49 PM

@ThomasOwens I'd say there's no value in naming your tag after your type - and that you should expect to often not have them named the same. For instance, two elements of the same type, they're likely to have different element names

Thomas Owens

@JimmyHoffa That's true. But I don't think that's what I'm asking.

Jimmy Hoffa

Just like in code for the string type, there are variables with many different names, so should it be in XML

Thomas Owens

Just because the complex type and element are the same name isn't really relevant here. It's more about the <X xsi:type="Y"> to indicate the real type of the element, or just <Y>. I think <Y> is cleaner and nicer.

And should be the preferred approach.

Jimmy Hoffa

@ThomasOwens it will be too common to need elements to have names that don't mirror their type, I would plan to make that scenario as pleasant as possible because the alternative scenario needs no planning to ensure it doesn't become incoherent

Always design to make the most unpleasant but still common scenario as pleasant as possible, or else people will work around your designs to accomplish that scenario. No one comes up with workarounds just to accomplish the naive scenario because it will be easy enough. Mmm red curry potato chips... spicy

Thomas Owens

I honestly don't understand what you are saying.

Jimmy Hoffa

6:55 PM

@ThomasOwens you say that as if what I'm saying makes sense to begin with

Thomas Owens

In my example, if I also had a Z that extended X, then I would expect <Z></Z> and not <X xsi:type="Z">

Jimmy Hoffa

@ThomasOwens what about when Z doesn't extend X but rather uses it for a different partition (this X is for SQL but this X is for oracle, they hold the same precise information but are consumed separately/differently)

now you have <X> and <Y xsi:type="X"> and there's no avoiding it

Thomas Owens

@JimmyHoffa I don't know how that could possibly happen.

So I'm saying that both should be valid for both production and reading. The other side is that only <Y xsi:type="X"> is valid because you remove the top level elements associated with X.

So you'll have a complex type Y and Z, but not an element Y and Z.

Jimmy Hoffa

nope, I don't know what you're talking about at all

How 'bout that JSON

Thomas Owens

Should I ask this on SO or Programmers? I think it's a design question.

Jimmy Hoffa

7:00 PM

I think the red curry potato chips are a failure, too much cardamom

durron597

@JimmyHoffa Don't you ever talk that way to me. NEVER! NEVER! What we've got here is failure to properly celebrate coffee day.

Jimmy Hoffa

@durron597 look, just because some trader pissed in your wheaties this morning doesn't mean I paid him to do it

(it's amazing what those guys will do for money)

user55340

Given that "different indents" got reopened by mods, can they please pay close attention to it and moderate it so it doesn't become a discussion?

durron597

@JimmyHoffa What are you talking about? Today is our second most profitable day in July and top 10 ever.

Jimmy Hoffa

7:32 PM

@MichaelT alternatively, delete it and replace our entire front page with threats aimed at tab users

user55340

8:09 PM

-2

Q: Questions about a java developer job > semiconductor industry

I am an experienced java ee developer and I got this job offer: A java developer for a company that produces software solutions for the semiconductor industry. I've got two questions: 1- ".. implementation in Java, testing, and integration on the Litho computing platform" What is the Litho c...

user55340

@WorldEngineer you converted a comment, but didn't help out on closing a clearly off topic question?

user20683

@MichaelT was working on flags

Robert Harvey

8:20 PM

Wait, what? "Different indents" was forcibly reopened? For the love of God, why?

Oh. Tabs vs. spaces not a duplicate. Now that we've established that, can we get it closed again as "worst bikeshed ever?"

Ixrec

I voted for opinion-based...

user20683

Link and I will judge

user20683

and take the flak

user20683

because that's my job

Ixrec

32

Q: How to work with programmer with different preference of indentation width?

I personally prefer 4 spaces for each indentation level, but there are colleagues that prefer 2 and even 5 spaces. We can of course use the same spaces level, but is there a way we can uses different indentation width in the same project? How can a team with different coding preferences work tog...

coding-style coding-standards indentation

the top answer has 89 upvotes already...

user55340

8:26 PM

And how many different interpretations in the answers.

user20683

It's mod reopened. I'm not acting on this just yet.

Telastyn

What, no "kill the heathens" answer?

user55340

Core question now:

user55340

>
How can a team with different coding preferences work together on a common coding standards that satisfies all?

user20683

that's pretty firmly answerable

user20683

8:28 PM

and it's specific to software

user55340

Too broad. Get you team lead / dictator to set the standard.

Telastyn

the standard solution for such things: programmer thunderdome.

Thomas Owens

Oops. I clicked the wrong circle. :(

There.

enderland

Have you tried putting bleach in whatever the one who likes 5 spaces drinks? — Alec Teal 2 days ago

uhhh

user15026

What a charmer.

user55340

8:30 PM

accept the mean: 3.5 spaces per indent level. Next question: how do you round numbers?

Ixrec

the best rounding strategies alternate direction, so you'd have half the lines at 3 spaces and half at 4 spaces

Thomas Owens

Never indent anything. Ever. Even in languages that use indentation.

Telastyn

python sucks anyways

Ixrec

that sounds like the start of a good PPCG challenge

user55340

I admit to using gnu style in college.

user55340

8:33 PM

for(;;)
  {
    Code;
  }

user20683

@Telastyn Heretic

user55340

I look at it now and cringe.

user55340

1TBS @3

Thomas Owens

@MichaelT You are being judged extremely harshly right now.

user20683

@MichaelT I cringe mostly because that causes bugs in JS

user55340

8:35 PM

@WorldEngineer JavaScript didn't exist then.

user20683

like literally putting the { on the second line causes errors in the global namespace and other nonsense

user20683

@MichaelT aye

user20683

nor did Java for that matter IIRC

user55340

1.0 existed my fifth year.

user55340

Took a class that used it. Still got the applet we wrote.

user55340

8:36 PM

Hmm. Maybe not.

user20683

@MichaelT probably for the best, I'm sure they were full of security holes

user55340

It was a first person view in a programmatic generated maze.

Telastyn

yes, well.

user20683

@MichaelT That was a joke at Java applet's expense

user55340

We wrote the maze generation in C, Java, ML and prolog.

Thomas Owens

8:40 PM

I want to find an excuse to actually use Prolog.

It's an interesting language.

user55340

@ThomasOwens text based game engine.

user20683

@ThomasOwens Look up Mercury

user55340

csc.villanova.edu/~dmatusze/resources/prolog/sleepy.html

user55340

amzi.com/AdventureInProlog/a1start.php

user55340

18

Q: How to implement interactive programs (like games/simulations) using logic programming?

I've heard that logic programming can serve as a general-purpose alternative to other programming paradigms such as OO or functional programming. (Since Prolog is Turing-complete, this must be so!) However, I'm having trouble seeing how one would implement an interactive program, like a simple,...

logic-programming

Thomas Owens

8:42 PM

@WorldEngineer mercurylang.org

user20683

@ThomasOwens that's the one

user20683

it's basically Fast Prolog

Robert Harvey

I could never quite get my mind around Prolog, but I might try again with Mercury.

user20683

it has some Haskell flavors too

Thomas Owens

Prolog is hard. We should go shopping instead.

user20683

8:46 PM

it's kind of a combo of the two

user20683

@ThomasOwens the department chair at GSU teaches a grad level class called "Deductive Databases in Prolog"

user20683

amazon.com/Exercises-Programming-Style-Cristina-Videira/dp/…

user20683

This looks really interesting

user55340

11:06 PM

@jane one thing to note is that I don't use the desktop web browser based chat during the day - this isn't my "the other monitor". I use a mobile interface for chat... which... well... it sucks. I don't want to have the web sockets open to a site called 'chat.something.com' all day in case some curious network admin pokes at whats still sending packets at 2am. So, if you do want to ping me to get me to notice something - ping me... or engage in the evening (GMT-5 for timezone).

user55340

... then I can be a bit more verbose.

user55340

If one pokes at my chat user profile, one can clearly see me getting into work, taking lunch, getting back from lunch (and browsing things) getting home, and the evening activity.

ratchet freak

@MichaelT you use company wifi for that phone?

user55340

@ratchetfreak Nope.

user55340

The only 'all ports open' accessible company wifi is in the cafeteria... and I'm far too far away to get that signal during the day. There's one guy who plays world of warcraft at lunch on a laptop...

psr

11:17 PM

So I've been using cake.js and I've been having trouble importing the .nail file. </Getting @MichaelT in trouble>

user55340

@psr Not in trouble... I'm at home. And can type on a real keyboard. And playing Race for the Galaxy.

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