However, it also means that if you have any weak_ptrs pointing at the end of that shared_ptr, the object itself won't go away until all the weak_ptrs do too (because the control structure won't go away until they do, and they're contiguously allocated).
You said that it should be cross-platform, which rules out C#, IMHO
Also consider that, if you go for C++, you'll have to compile it for each platform.
Maybe you can have a C++ library that deals with memory and do the rest in a language you're more familiar with? e.g. using Boost.Python to interface with... well, Python.
There are similar solutions for Java and other high-level languages (in general I tend to avoid mixing languages but sometimes it's a necessary evil).
Edit: My statement that Python in implemented in C++ may not be entirely correct (there are C implementations) but that's not the point and shouldn't prevent you from doing the exercise.
By the way, you're welcome to copy your final list on Slashdot, I'd be curious to see it for my own education.
C++ could be a good choice for all the things you've mentioned. Networking is not an issue, as there are many open source libraries (e.g. libcurl - http://curl.haxx.se/), and using Boost is often a good thing anyway. Also, there are at least two good memory allocators: tmalloc (http://goog-perftools.sourceforge.net/doc/tcmalloc.html) and jemalloc (http://www.canonware.com/jemalloc/) so you may not need to write your own. (I assume that the above open source licenses are good for you, but they are just examples...)
However... I doubt that your project will be only Network + Memory + Disk. What else do you need? Some UI? Should it interact with the Web? Or with services in the Cloud? There's no easy answer to your question without knowing what else you need, and I wouldn't even exclude a hybrid-language approach (e.g. C++ / Python / JavaScript*).
* Before someone starts ranting about JavaScript having to run in a browser: NO - JavaScript runs perfectly fine withouth a browser, and can easily interact with C++. Have a look at V8 or SpiderMonkey, just to name some JavaScript engines.
C++ abstracts away too much for that to be useful.
Does it?:-)
I agree that C takes you very close to the bare metal. Yet C code is perfectly valid C++ code, and C++ allows you to achieve the same* level of control that you get in C, plus (as you pointed out) many useful abstractions that could hide what happens underneath.
However my point is that using some of those abstractions without understanding them could have nasty effects. Just a few examples:
* STD lists and vectors have very different implementations in terms of memory allocation and usage (vectors are contiguous in memory and could lead to inefficient copies if their size is not managed carefully, lists are not contiguous and tracersing them may be inefficient in some cases)
* shared pointers are exceptionally useful, but there's an overhead in copying them unnecessarily
* multiple inheritance is another powerful tool, but it's easy to misuse it if you don't understand virtual inheritance
Of course there are similar abstractions in other languages, but their implementation is often mediated by some framework/VM/etc that takes care of the shit for you to some extent. In C++ there's no garbage collector (although you can write your own) and you have full responsibility of what your code does. You can write your own tools for the job, your custom allocators, your libraries and abstractions, but you are responsible for most of it (new compilers help, thankfully).
To write good C++ you always have to see through the code, or you'll likely end up having sub-optimal stuff (which I concede can be enough in some cases).
* if you think that's not the case, please provide some examples.
In which register a is residing, supposing we are on an ARM? Or suppose we are in an 68k? Or suppose we are on an x86?
You are just an idiot!
I don't claim i know, I claim that I understand: something that you're clearly neither willing nor capable of doing, as your question and offensive language suggest.
Since C++ is the language of choice when you need performance (along with C and - sometimes - assembly), to write good code it's essential to understand what each line of code does to the machine (memory, registers,...) and if/how instructions can be optimized by the compiler.
This level of awareness is generally not required to be proficient in other languages, but in my experience it's what makes the difference between newbies and pros, at least in the areas where C++ is used for a good reason.
Said that, it can be useful to understand as much as possible of any language and C++ can provide strong foundations in that sense, as this short article points out: http://www.forbes.com/sites/qu....
Although reading reference material in digital format is not that simple (at least for me), that's exactly the kind of book where each page may be read several times.
1) Make your software code clean 2) Agree with your manager/HR/Legal dept to release it as free and open-source (that's right) 3) Wait for other developers to use your software 4) Make your own company and get paid for the support
If your software is worth something, you'll be fine. If not, but still it becomes rather popular, you can put it in your resume and keep selling yourself.
Slashdot Mirror
Someone has started already, and with the bigger picture in mind: www.fermat.org.
During the initial setup I didn't agree with some T&C, including the one for voice control.
As a result those features are turned off.
Easy peasy.
Most likely it is XP.
Bah, I'll stick to Linux.
I would be interested to know what version of Windows is the one at position 39, as it looks safer to use than the other ones.
I might even consider switching from Linux...
This is what happens when those who made the law receive hard money from the industry.
It's called lobbying, some countries accept it as normal, other countries consider it as a form of corruption.
Either way, it's the majority of citizens who lose.
However, it also means that if you have any weak_ptrs pointing at the end of that shared_ptr, the object itself won't go away until all the weak_ptrs do too (because the control structure won't go away until they do, and they're contiguously allocated).
Shouldn't you lock the weak_ptr before using it?
Q: Hey, did you spy on me?
A: Nope. But thank you for asking, we'll start right away.
A bunch of copy/paste/edit iterations.
And good luck finding a job in software, by the way!
I wonder how difficult it would be to validate the reviews by asking users to submit their hotel receipt (maybe without publishing them).
You can still fake them, but maybe it wouldn't be worth the pain.
Same for all other review-based websites (amazon, etc)
Since when Palo Alto is a tech skill?
Need to update my CV...
ronf... ronf... zzzzz... zzzzzzz
Please mod parent up!!
Aaah... nostalgia!!!
Fine. I know the difference between C and C++ and, as I wrote, that's not the point.
Can I see your list now, please?
You said that it should be cross-platform, which rules out C#, IMHO
Also consider that, if you go for C++, you'll have to compile it for each platform.
Maybe you can have a C++ library that deals with memory and do the rest in a language you're more familiar with? e.g. using Boost.Python to interface with... well, Python.
There are similar solutions for Java and other high-level languages (in general I tend to avoid mixing languages but sometimes it's a necessary evil).
Didn't you get the irony?
"Mastering Emacs" is a fictional novel.
Edit: My statement that Python in implemented in C++ may not be entirely correct (there are C implementations) but that's not the point and shouldn't prevent you from doing the exercise.
By the way, you're welcome to copy your final list on Slashdot, I'd be curious to see it for my own education.
Could you describe a project for which the choice of c++ is a good one?
Guess what, you can easily do that:
Oh... good luck!
Can you hear it, my son? This is the voice of ignorance.
You said nothing useful about your project
C++ could be a good choice for all the things you've mentioned. Networking is not an issue, as there are many open source libraries (e.g. libcurl - http://curl.haxx.se/), and using Boost is often a good thing anyway. Also, there are at least two good memory allocators: tmalloc (http://goog-perftools.sourceforge.net/doc/tcmalloc.html) and jemalloc (http://www.canonware.com/jemalloc/) so you may not need to write your own. (I assume that the above open source licenses are good for you, but they are just examples...)
However... I doubt that your project will be only Network + Memory + Disk. What else do you need? Some UI? Should it interact with the Web? Or with services in the Cloud? There's no easy answer to your question without knowing what else you need, and I wouldn't even exclude a hybrid-language approach (e.g. C++ / Python / JavaScript*).
* Before someone starts ranting about JavaScript having to run in a browser: NO - JavaScript runs perfectly fine withouth a browser, and can easily interact with C++. Have a look at V8 or SpiderMonkey, just to name some JavaScript engines.
C++ abstracts away too much for that to be useful.
Does it? :-)
I agree that C takes you very close to the bare metal. Yet C code is perfectly valid C++ code, and C++ allows you to achieve the same* level of control that you get in C, plus (as you pointed out) many useful abstractions that could hide what happens underneath.
However my point is that using some of those abstractions without understanding them could have nasty effects. Just a few examples:
Of course there are similar abstractions in other languages, but their implementation is often mediated by some framework/VM/etc that takes care of the shit for you to some extent. In C++ there's no garbage collector (although you can write your own) and you have full responsibility of what your code does. You can write your own tools for the job, your custom allocators, your libraries and abstractions, but you are responsible for most of it (new compilers help, thankfully).
To write good C++ you always have to see through the code, or you'll likely end up having sub-optimal stuff (which I concede can be enough in some cases).
* if you think that's not the case, please provide some examples.
so, you claim you know:
...
int a = 13;
In which register a is residing, supposing we are on an ARM? Or suppose we are in an 68k? Or suppose we are on an x86?
You are just an idiot!
I don't claim i know, I claim that I understand: something that you're clearly neither willing nor capable of doing, as your question and offensive language suggest.
Have a nice day!
"Davis wouldn’t provide more details about the systems or their use, citing cybersecurity policy"
...on Windows XP?!
...WTF...
Since C++ is the language of choice when you need performance (along with C and - sometimes - assembly), to write good code it's essential to understand what each line of code does to the machine (memory, registers, ...) and if/how instructions can be optimized by the compiler.
This level of awareness is generally not required to be proficient in other languages, but in my experience it's what makes the difference between newbies and pros, at least in the areas where C++ is used for a good reason.
Said that, it can be useful to understand as much as possible of any language and C++ can provide strong foundations in that sense, as this short article points out: http://www.forbes.com/sites/qu....
Although reading reference material in digital format is not that simple (at least for me), that's exactly the kind of book where each page may be read several times.
1) Make your software code clean
2) Agree with your manager/HR/Legal dept to release it as free and open-source (that's right)
3) Wait for other developers to use your software
4) Make your own company and get paid for the support
If your software is worth something, you'll be fine.
If not, but still it becomes rather popular, you can put it in your resume and keep selling yourself.