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  1. #1
    C.I.A. Sarevok's Avatar
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    Default Programming Tricks/Questions/Trivia


    Oks ato buhion ning Programming na section.

    Ako purpose ani na thread kay para makalearn ta ug mga new things about programming. You can post any programming trick, question or trivia pero dapat i-attempt sa nimo ug answer ang previous question. Hopefully with the knowledge learned here, job interviews for programming work will be a lot easier

    Ang template kay:

    [Programming Language]
    [Question]

    -------

    I'll start:

    [Programming Language]
    C++

    [Question]
    What operator in C++ am I trying to implement in the following code:
    Code:
    #define my_own_operator(type) (char *)(&type+1)-(char*)(&type)

  2. #2
    Quote Originally Posted by Sarevok View Post
    [Question]
    What operator in C++ am I trying to implement in the following code:
    Code:
    #define my_own_operator(type) (char *)(&type+1)-(char*)(&type)
    Ahaka oi... na mind-blown ko kadyot... This is a very elegant strlen()!



    edit: sizeof diay, kay operator man ang question

  3. #3
    Kini dili ni original, pero unsa ang output sa var_dump()?

    [Programming Language]
    PHP

    Code:
    <?php
    
    $a = md5('240610708');
    $b = md5('QNKCDZO');
    
    var_dump($a == $b)
    ?>
    No cheating please. Hehe...

  4. #4
    C.I.A. Sarevok's Avatar
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    Quote Originally Posted by simoncpu View Post
    Kini dili ni original, pero unsa ang output sa var_dump()?

    [Programming Language]
    PHP

    Code:
    <?php
    
    $a = md5('240610708');
    $b = md5('QNKCDZO');
    
    var_dump($a == $b)
    ?>
    No cheating please. Hehe...
    Awp di ko kahibaw php hehe ako guess kay 'boolean false'?

  5. #5
    Quote Originally Posted by Sarevok View Post
    Awp di ko kahibaw php hehe ako guess kay 'boolean false'?
    Dapat unta boolean false, pero ang output sa MD5 hash para ani nga strings mosugod ug "0e". Mag-buot2x ang PHP iyang i-cast ang string to floating point, so 0 raised to the power of X is 0.

    Way ayo ang PHP. :-/

    Code:
    $a = md5('240610708');
    $b = md5('QNKCDZO');
    
    var_dump($a);
    var_dump($b);
    var_dump((float) $a);
    var_dump((float) $b);
    
    var_dump($a == $b);
    Output:
    Code:
    string(32) "0e462097431906509019562988736854"
    string(32) "0e830400451993494058024219903391"
    float(0)
    float(0)
    bool(true)

  6. #6
    C.I.A. Sarevok's Avatar
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    Quote Originally Posted by simoncpu View Post
    Dapat unta boolean false, pero ang output sa MD5 hash para ani nga strings mosugod ug "0e". Mag-buot2x ang PHP iyang i-cast ang string to floating point, so 0 raised to the power of X is 0.

    Way ayo ang PHP. :-/

    Code:
    $a = md5('240610708');
    $b = md5('QNKCDZO');
    
    var_dump($a);
    var_dump($b);
    var_dump((float) $a);
    var_dump((float) $b);
    
    var_dump($a == $b);
    Output:
    Code:
    string(32) "0e462097431906509019562988736854"
    string(32) "0e830400451993494058024219903391"
    float(0)
    float(0)
    bool(true)
    Awp expected na sa PHP or bug?

    Here's another one:
    [Programming Language]
    C++

    [Question]
    What does this line do?
    Code:
    #pragma pack(1)

  7. #7
    Nasuya ko nimo... gimingaw na ko sa C/C++ puros na lang PHP ako code karon...

    Ang epek ani mohinay ang program kay di ma align sa memory ang structure (or object? dunno).

    [Programming Language]
    bash

    [Question]
    Unsa mahitabo kung padaganon ni nimo sa Linux/Unix shell?
    Code:
    :(){ :|:& };:

  8. #8
    follow q ani na thread.

  9. #9
    C.I.A. Sarevok's Avatar
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    Quote Originally Posted by simoncpu View Post
    Nasuya ko nimo... gimingaw na ko sa C/C++ puros na lang PHP ako code karon...

    Ang epek ani mohinay ang program kay di ma align sa memory ang structure (or object? dunno).

    [Programming Language]
    bash

    [Question]
    Unsa mahitabo kung padaganon ni nimo sa Linux/Unix shell?
    Code:
    :(){ :|:& };:
    gitry nako ni bro. nagprint siya ug process id then nihang man basin rm -rf * ni ha

  10. #10
    Quote Originally Posted by Sarevok View Post
    gitry nako ni bro. nagprint siya ug process id then nihang man basin rm -rf * ni ha
    Waaaaah... mo crash na sa Linux, command na sa fork bomb... I didn't thought nga padanganon nimo... hehe... di na ko mag paste2x ug evil Linux commands maka sala nya ko... =)

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