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Type: Posts; User: Plasmator

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  1. Replies
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    Re: can i force compiler to use 64 bit int?

    It doesn't matter what your compiler is willing to swallow -- this sort of thing is explicitly forbidden by the standard.

    If you're writing portable and well-defined code, you mustn't do this.
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    Re: can i force compiler to use 64 bit int?

    That's absolutely illegal. You are not permitted to define macros with names identical to language keywords.

    assert takes one argument; I think you meant assert((expression) && "string-literal"),...
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    Re: Preprocessor tricks

    What templates?

    Simulated recursion.

    Quite easily generated:


    #!/usr/bin/perl
    use strict;
    use warnings;
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    Re: Preprocessor tricks

    Yes, it will.

    You clearly don't understand how BOOST_PP_REPEAT works, then.
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    Re: Preprocessor tricks

    It's trivial to implement, albeit the code can become quite bulky (if done in a reusable manner).
    Luckily, most of the legwork has been written for you already (see the Boost.Preprocessor library):...
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    Re: std::string all numeric

    Easier to just use isdigit directly:
    bool check_string_numeric(const std::string& str)
    {
    return (std::find_if(str.begin(), str.end(), std::not1(std::ptr_fun(::isdigit))) == str.end());
    }If...
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    Re: Converting txt file contents to char array

    A little easier, IMO:


    std::ifstream in("...");

    typedef std::istreambuf_iterator<char> in_t;

    std::string buffer((in_t(in)), in_t());
    EDIT: It's probably also worthwhile to mention that...
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    Re: breaking out of a loop

    In this particular case, all that was required of you was to explicitly return from main when a + b + c == 1000.

    If your ultimate goal is to find the triplet that satisfies the condition outlined...
  9. Re: void value not ignored as it ought to be

    See the MSDN entries for srand and rand. Ignore the MS-specific parts (e.g., *_s versions), of course.

    I don't know what kind of "tutorial" you're expecting because it doesn't get any simpler than...
  10. Re: void value not ignored as it ought to be

    Why are you looking at srand when your error is related to rand?

    Regardless, rand takes no arguments.
    You, on the other hand, are trying to pass something to it. That's what's causing your...
  11. Re: void value not ignored as it ought to be

    Link, please.

    As usual, your best references are the C (ISO/IEC 9899) and/or C++ (ISO/IEC 14882) standards. Their respective drafts are available online for free.

    Your compiler already did...
  12. Re: void value not ignored as it ought to be

    Start by reading the documentation. Trial and error usually doesn't work in programming.
  13. Re: void value not ignored as it ought to be

    Uh, check srand's signature. What you're doing makes no sense. You probably intended to write rand, instead.
  14. Re: Overloading a matrix constructor for 1 and 2 dimensional arrays.

    With respect to exclusively supporting stack-based arrays, sure (untested):

    template< typename T, class Container = std::deque<T> > class Matrix
    {
    public:
    template<std::size_t X>...
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    Poll: Re: Were you taught debugging

    Not really, no.

    Not even preventative measures (e.g., [static] assertions) were covered. :sick:
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    Re: remove_if (not)

    That's what std::ptr_fun from the functional header's for.
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    Re: Removing characters from a string

    You should prefer to use standard algorithms wherever possible. All of that crap can be replaced by a one-liner involving std::remove_if and std::isspace:

    txt.erase(std::remove_if(txt.begin(),...
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    Re: Detecting another process

    This isn't the right forum for this sort of question.

    Assuming that you're targeting a reasonably modern OS (i.e., Win2k+), take a system snapshot with CreateToolhelp32Snapshot and walk through it...
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    Re: class constructor question

    JohnW@Wessex's getting at the same thing.
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    Re: Help Please before i go crazy!!!!

    Just like kindergarten arithmetic...

    For integers:
    1 / 2 = 0
    2 / 2 = 1
    3 / 2 = 1
    4 / 2 = 2
    5 / 2 = 2
    6 / 2 = 3
    7 / 2 = 3
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    Re: class constructor question

    You're missing the ****ing point.
    When you pass T by-value, T's copy constructor gets invoked. In your case, over and over and over. In short, impossible. Passing T by (const) reference alleviates...
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    Re: class constructor question

    Sigh... Let's try this again.

    What gets invoked when you pass by-value?
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    Re: class constructor question

    Obviously it's not.

    First, you can't pass test by-value in your copy constructor. Think about it, the reason should be quite obvious (HINT: what happens when you pass something by-value?)....
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    Re: return function

    That's a good thing.

    Pure luck.

    const-qualification in this context doesn't matter much. The point of the snippet was to demonstrate what happens when you attempt to read/write to something...
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    Re: Project Euler #14

    I suggested upgrading because I was under the impression that shadowx360 confused VC++ 9 with an older version.
    In fact, IIRC, this sort of "extension" was removed several years ago in an earlier...
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