danbruc

1599 ms·

3811.
by danbruc 13y ago
But you don't know which reference is the last until you actually get there - that is why you used reference counting in the first place, because you were unable to statically determine which reference will be the last one. So every ti
3812.
by danbruc 13y ago
It is a mechanism to figure out if a resource is no longer in use and can be released - that sounds like the very definition of garbage collection.
3813.
by danbruc 13y ago
Reference counting doubles the number of memory access - you have to update the reference and the counter every time. That is a big performance hit. Reference counting may randomly halt your code, too, because you never know when you hit ze
3814.
by danbruc 13y ago
https://news.ycombinator.com/item?id=7315392 https://news.ycombinator.com/item?id=7315575 (Don't want to duplicate the comment once again.)
3815.
by danbruc 13y ago
Reference counting is just one form of garbage collection, the other main alternative is a collecting garbage collector. And comparisons showed - I know that they tried both for .NET - that a collecting GC outperforms a reference counting G
3816.
by danbruc 13y ago
shared_ptr means reference counting, reference counting means you lose determinism because you no longer know if releasing a reference will trigger releasing a resource. Delay and offload releasing the resource to a separate thread, you los
3817.
by danbruc 13y ago
And now we are back at garbage collection - the two main options are reference counting GCs and collecting GCs. I know it for the .NET GC, they tried a reference counting GC and it performed worse than a collecting GC and not to forget the
3818.
by danbruc 13y ago
I am mostly developing business applications. The user decided to view a couple of orders, orders reference products and some of the orders reference the same product. Who owns the product? Definitely non of the orders and neither the form
3819.
by danbruc 13y ago
See mikeash's comment for a very simple situation. I mostly develop business applications with customers, products, orders, contracts, addresses and hundreds of other things connected and entangled in sometimes insane ways as dictated
3820.
by danbruc 13y ago
Yes, in some scenarios you can associate the lifetime of a resource with the lifetime of a storage location, but this simply does not work in all cases, probably only in a small fraction of all cases. And then? How do you handle resources t
3821.
by danbruc 13y ago
What the hell is going on in this world? When did everybody loss their minds? How can you even start to ponder if it might be a good idea to record web chats from random internet users, even less actually do it? Mankind, I am disgusted. Ser
3822.
by danbruc 13y ago
I meant that Landau notation is a trivial concept, not finding a good algorithm to solve a given problem or determining the runtime of a given algorithm.
3823.
by danbruc 13y ago
Not in a single interview ever have I been asked about the runtime of an algorithm. On the other hand it is mentioned in almost every article about interviews for programming jobs. How many companies do actually ask such questions? If your
3824.
by danbruc 13y ago
That is why I said "assuming no overlap". The number I wanted to estimate is the number of bitcoins (currently) not in use or in illegitimate possession; the number of bitcoins that would not hurt anybody or hurt the right people
3825.
by danbruc 13y ago
744,000 MtGox 2014 400,000 MtGox 2011 154,000 MyBitcoin 2011 43,000 Bitcoinica 2012 1,000,000 Satoshi early mining estimate --------- 2,341,000 ~20 % of all bitcoins in circulation (12,400,000) Assuming no overl
3826.
by danbruc 13y ago
Blowing up 15 tons of TNT on the moon is visible from the earth - I would not have expected that. And now I wonder what a Tsar Bomba like bomb - 50,000,000+ tons of TNT equivalent - on the moon would look like.
3827.
by danbruc 13y ago
I do not like that. One world, one language. Preferably English. How cool would that be? No more language barriers. English is not my first language.
3828.
by danbruc 13y ago
Does it beat the pulsar clock [1]? And will standing next to clock make it go wrong because of the change of the gravitational field? [1] http://en.wikipedia.org/wiki/Pulsar_clock
3829.
by danbruc 13y ago
C# fully supports dynamic types [1] and has very good reflection support [2] since version one. [1] http://msdn.microsoft.com/en-us/library/dd264736.aspx [2] http://msdn.microsoft.com/en-us/li
3830.
by danbruc 13y ago
Depending on the context unbounded and infinite may mean very different things, for example the surface of a sphere being unbounded but finite.
3831.
by danbruc 13y ago
Strong and weak typing don't even have commonly accepted definitions...
3832.
by danbruc 13y ago
Why needs this to be discussed again and again? It is such an obvious thing. Use a statically typed language and you get a proof that your program does not contain bugs of a certain class for free. Use a dynamically typed language and you l
3833.
by danbruc 13y ago
Your result is correct but your reasoning is not sound. A & B => C and !B does not imply !C.
3834.
by danbruc 13y ago
I never thought about which countries are producing all the porn. I tried to find some numbers but it turns out to be quite hard. I still found some interesting numbers [1] although they do not really answer what I was looking for, which co
3835.
by danbruc 13y ago
The uncontroversial answer to "what is porn anyway?" that underpins the UK ban is "something children shouldn't watch". On the list of things children should not watch people having sex should really not be close
3836.
by danbruc 13y ago
It is really scary that some people need a 300 page report to realize that foreigners have privacy rights, too.
3837.
by danbruc 13y ago
The variation of opinion across the U.S. is at least as big as the variation across the planet. Nitpicking: That is impossible - besides both variations are equally large - because the USA is a part of the planet. But I guess the variatio
3838.
by danbruc 13y ago
What's the problem with pair programming?
3839.
by danbruc 13y ago
Now go and explain the difference between this incident and a terror attack without using the fact the the former has been carried out by a state while the later has been carried out by civilians.
3840.
by danbruc 13y ago
A unicorn? That is the description of a average to good programmer and there are quite a few of them.

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