baquerd posted:

I certainly tend to agree and a point well made. But what if you took your car apart in the driveway and built it from the frame up, but it's still in the same place (read: memory location)? It is only a difference of degree don't you think but now the real world example is much more arguable.

Brecht posted:

code:

Bar bar1("cake dogg");
Bar bar2("present cat");
bar1 = bar2; // same variable different object

TasteMyHouse posted:

what the gently caress are you talking about
e: oh I get it, you mean that the variable bar1 on line 3 is the same variable as the bar1 that is on line 1, it just has been assigned a different object. Do I understand? this is incorrect (in most* situations) in C++ however.

_{*I only say most because I'm not certain that it's never, but I can't think of a situation where that's true}

Toady posted:

I think you're being a little too pedantic here.

nielsm posted:

But apparently C# Struct var; is equivalent to something like:
char buffer[sizeof(Struct)];
Struct &var = *(Struct*)(void*)buffer;

Brecht posted:

Yes, my point is only that the identifier "bar1" (ie. the variable "bar1") is the same at line 1 and line 3, but that the object it refers to is a different object in every functional sense. I concede it has the same memory address (I could probably make that not true, but it would take some pretty gnarly abuse) but that's an implementation detail, and irrelevant to illustrating the distinction between variables and the things they refer to.

Smugdog Millionaire posted:

I'm not going to chime in with anything about C++, but when it comes to C# the language designers really want you to not think about value types like that: http://blogs.msdn.com/b/ericlippert/archive/2010/09/30/the-truth-about-value-types.aspx

Eggnogium posted:

Edit: And to be clear, I don't think your code sample (helpfully quoted below this post) qualifies as taking apart and rebuilding from the frame up.

tef posted:

so hang on is java pass by reference or value

Smugdog Millionaire posted:

I'm not going to chime in with anything about C++, but for correctness' sake I'm going to bring this up about C#: http://blogs.msdn.com/b/ericlippert/archive/2010/09/30/the-truth-about-value-types.aspx
(Don't think about value types in C# like that.)

tef posted:

so hang on is java pass by reference or value

Vanadium posted:

Is prolog pass by value or pass by reference

baquerd posted:

In Java there are objects and there are primitives. I've been with Java since 1997 and the terminology did not start out as ambiguous though recent revisions have practically made everything a bit muddled. I don't see what's so hard to understand why you can have object types and non-object types, from booleans to doubles to... (ok it's not a long list) but anything out there that does not support methods or member variables can be thought of as a non-object, then there are objects, then there are structs which are a sort of specialized object in Java...

Eggnogium posted:

Here's a horror: Scrolling past your avatar in IE9 slows the browser down to a crawl.

Ithaqua posted:

It's the animated GIF; opening it in IE9 alone sends my CPU usage up to a constant 12% and memory usage keeps going up. Someone ought to send that to Microsoft and mention that so they can fix whatever the gently caress is happening.

baquerd posted:

I bet it's redrawing the entire image every frame but the GIF animation definition allows for frame difference updates so the actual file size is small enough to be an avatar but there are a ton more frames than most GIFs.

nielsm posted:

But apparently C# Struct var; is equivalent to something like:
char buffer[sizeof(Struct)];
Struct &var = *(Struct*)(void*)buffer;

Ithaqua posted:

I thought I was insane. Thank you for confirming that I'm not. Scrolling past tef's avatar spikes my CPU like crazy and slows down IE9. Sometimes the browser even becomes non-responsive! It's the animated GIF; opening it in IE9 alone sends my CPU usage up to a constant 12% and memory usage keeps going up. Someone ought to send that to Microsoft and mention that so they can fix whatever the gently caress is happening.

quote:

Thank you for reporting the IE9 performance issue when viewing a web page with many animated GIFs. While your bug report is a valid observation, we will not be addressing the issue in IE9. Animated GIF use overall is not particularly high and is declining. Moreover, sites with many animated GIFs are rare. At this stage in the IE9 cycle, we are focusing our engineering efforts on interoperability and performance issues common to a large number of sites.


Your feedback is very important to us, and it helps us improve the quality of Internet Explorer. We continue to welcome more feedback, so please don't hesitate to report other ways that we can improve Internet Explorer.

Best regards,

The Internet Explorer Team

Microsoft posted:

Moreover, sites with many animated GIFs are rare.

tef posted:

iirc it only affects 32 bit ie9 (or was it 64 bit). some people don't have a problem with ie9

beuges posted:

Aleksei Vasiliev posted:

it affects both on my machine, though I think 64-bit handles it a tiny bit better

Che Delilas posted:

It's a high enough priority to write and release, but not high enough to test or change. Sounds like Microsoft to me.

TRex EaterofCars posted:

It doesn't even work in Safari 5, it just draws a blue dot where the "turtle" would be.

angrytech posted:

Wait, there's supposed to be a turtle in that gif?

angrytech posted:

Wait, there's supposed to be a turtle in that gif?

TasteMyHouse posted:

In case you're not joking...

MEAT TREAT posted:

There isn't an obvious cursor/turtle in the avatar.

beuges posted:

It's already been reported (and I added a comment with tef's avatar as well): https://connect.microsoft.com/IE/feedback/details/606199/very-poor-gif-animation-performance

Microsoft's response:

Dicky B posted:

This seems like a good time to recommend this book http://www.elementsofprogramming.com/book.html

TasteMyHouse posted:

are we seeing the same thing? I see a curve being drawn in a turtle-graphics fashion. IIRC it was made with Python's turtle module.

TRex EaterofCars posted:

It doesn't even work in Safari 5, it just draws a blue dot where the "turtle" would be.

Fren posted:

I defy anyone to say they got past chapter 1 of this book without a migraine. It makes perfect sense for me up to Transformations and their Orbits. Then I loving have no idea what the gently caress is going on.

Dicky B posted:

This seems like a good time to recommend this book http://www.elementsofprogramming.com/book.html