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Type: Posts; User: superbonzo

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1. ## Thread: Recursive function: take a non-negative integer and print each digit of that integer

by superbonzo
Replies
16
Views
530

### Re: Recursive function: take a non-negative integer and print each digit of that inte

well, then I have to ask you what do you mean exactly by equivalent/different solutions. Note that the issue this thread is about ( well, at least concerning OReubens and tiliavirga debate ) has to...
2. ## Thread: Recursive function: take a non-negative integer and print each digit of that integer

by superbonzo
Replies
16
Views
530

### Re: Recursive function: take a non-negative integer and print each digit of that inte

yep, and I was pointing out that you have'nt proved that an explicit stack is required in the OP case ( the fact that it's not tail recursive does not imply it , unless I'm missing something of...
3. ## Thread: Recursive function: take a non-negative integer and print each digit of that integer

by superbonzo
Replies
16
Views
530

### Re: Recursive function: take a non-negative integer and print each digit of that inte

granted, an explicit stack is the most straightforward way of transforming a recursive solution to an interative solution, but I don't think it's "required" ( unless you consider any form of state an...
4. ## Thread: Recursive function: take a non-negative integer and print each digit of that integer

by superbonzo
Replies
16
Views
530

### Re: Recursive function: take a non-negative integer and print each digit of that inte

consider the number "123456"

123456 % 10 = 6
123456 / 10 = 12345
12345 % 10 = 5
12345 / 10 = 1234
1234 % 10 = 4
1234 / 10 = 123
...
5. ## Thread: [RESOLVED] Find all sentences or consecutive sequence of sentences where min<=length<=max

by superbonzo
Replies
13
Views
480

### Re: Find all sentences or consecutive sequence of sentences where min

wait, do they mean that eol's can be in the middle of a sentence ? if yes, the inplace parsing can be further simplified by using a deque and char by char extraction ...
6. ## Thread: [RESOLVED] Find all sentences or consecutive sequence of sentences where min<=length<=max

by superbonzo
Replies
13
Views
480

### Re: Find all sentences or consecutive sequence of sentences where min

assuming this is c++ and we can use only the standard lib, something like ( off the top of my head, neither compiled nor tested ! )

#include <string>
#include <vector>
#include <fstream>...
7. ## Thread: Abstraction concept problem?

by superbonzo
Replies
63
Views
2,906

### Re: Abstraction concept problem?

unfortunately, I don't think so. The original issue was not just about the dangers of (raw) pointers, but rather their role in interface designs.

I ( and probably OReubens ) claimed that values...
8. ## Thread: Abstraction concept problem?

by superbonzo
Replies
63
Views
2,906

### Re: Abstraction concept problem?

sure you can ( of course, your example won't compile because you can not bind a const reference to a non-const reference ) with the caveat that either A or A's users must ensure that any access to...
9. ## Thread: a question regarding to std vector

by superbonzo
Replies
4
Views
413

### Re: a question regarding to std vector

FYI, c++11 added std::any_of to replace the more verbose std::find_if() != .end()
10. ## Thread: C++ Acessing Virtual Functions of Custom Exception Class from Catch Statement

by superbonzo
Replies
3
Views
267

### Re: C++ Acessing Virtual Functions of Custom Exception Class from Catch Statement

uhm, there's a lot of confusion in there ...

consider this code

struct A{ void foo(){} };

int main()
{
11. ## Thread: C++ Acessing Virtual Functions of Custom Exception Class from Catch Statement

by superbonzo
Replies
3
Views
267

### Re: C++ Acessing Virtual Functions of Custom Exception Class from Catch Statement

typically, you throw by value and catch by (const)reference:

void B::calculate()
{
try
{
if( cin >> a && cin >> b )
{
12. ## Thread: Abstraction concept problem?

by superbonzo
Replies
63
Views
2,906

### Re: Abstraction concept problem?

yep, the original discussion ( and my reply ) was about pointers rather than reference semantics, it looks like tilavirga uses the two interchangeably ...

anyway

I disagree, for two...
13. ## Thread: Abstraction concept problem?

by superbonzo
Replies
63
Views
2,906

### Re: Abstraction concept problem?

Congratulations!!! You've just won the Dogmatic Statement of the Month competition. :) ( July edition )

>> None is more evil than the other

this is hardly believable; references carry more...
14. ## Thread: Abstraction concept problem?

by superbonzo
Replies
63
Views
2,906

### Re: Abstraction concept problem?

historically, pointers mostly meant "mutable references"; nowadays, (smart)pointers should strictly means "ownership". An interface that use smart pointers to pass ownership of dependencies around is...
15. ## Thread: Algorithm Help - Statistical Relativity

by superbonzo
Replies
7
Views
425

### Re: Algorithm Help - Statistical Relativity

how is the score computed ?
what's the final result ? ie, the full n*(n+1)/2 entries matrix of scores ? a top-ten for a given entry ? etc ... ?

by superbonzo
Replies
10
Views
649

### Re: Implementig a hot-reload system

off the top of my head, alternative solutions could be

1) write a plugin for an existing 3d editor ( I'm personally in love with 3dstudio max and it's perfect for this purpose, but it's costly ......
17. ## Thread: Is it possible to add to (i.e. extend) a std::stringstream ?

by superbonzo
Replies
3
Views
353

### Re: Is it possible to add to (i.e. extend) a std::stringstream ?

yep, stringstream does not "append" by default when its string buffer is not empty. You can

1) in c++11, open in append mode

std::stringstream whatever("initialize, ",...
18. ## Thread: Runtime error R6025 - pure virtual function call

by superbonzo
Replies
10
Views
871

### Re: Runtime error R6025 - pure virtual function call

wait, I misread your post, the error happens in vs2013 ( and not in vs2010 as I assumed in my previous post, sorry ), but unfortunately I don't have a copy of vs2013 to test with at the moment.
...
19. ## Thread: Runtime error R6025 - pure virtual function call

by superbonzo
Replies
10
Views
871

### Re: Runtime error R6025 - pure virtual function call

the std::locale/std::codecvt_utf16 relevant source code ...

anyway, I resurrected a copy of vs2010 and the program

#include <fstream>
#include <locale>

by superbonzo
Replies
11
Views
1,049

### Re: 3d vector

via lightweight proxy objects, say:

#include <iostream>

template < typename T >
struct Proxy
{
T& up_; // the previous level

by superbonzo
Replies
15
Views
1,222

### Re: cross correlation

now, premising that, friendly speaking, your code is really a mess :) ( my advice is to pick some good c++ book to get the basic )

the "logic" seems correct at first sight, though it's strange...
22. ## Thread: Challange for you becomes a challenge for others! Help creating a code snippet:

by superbonzo
Replies
30
Views
1,610

### Re: Challange for you becomes a challenge for others! Help creating a code snippet:

I'm not sure I follow you ... should the snippets be tricky and hard to "solve" ? or should they convey some dangerous practice in a simple and concise way ?

BTW,

uhm, standard wise, null...

by superbonzo
Replies
15
Views
1,222

### Re: cross correlation

performance aside, strictly speaking there's no need of working in the frequency domain, simple cross correlation should work in time domain too for not too complex scenarios ( like the OP case, to...
24. ## Thread: Runtime error R6025 - pure virtual function call

by superbonzo
Replies
10
Views
871

### Re: Runtime error R6025 - pure virtual function call

as far as I know, given that you cannot legally instantiate an object of abstract type, the only way of "legally" triggering that error ( undefined behaviour aside ) is when a base class subobject...
25. ## Thread: Challange for you becomes a challenge for others! Help creating a code snippet:

by superbonzo
Replies
30
Views
1,610

### Re: Challange for you becomes a challenge for others! Help creating a code snippet:

it's not so easy; unfortunately the standard is not very explicit on when a null pointer dereference ( or more generally, an indirection of a pointer to an object with indeterminate value ) gives ub...
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