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  • Double "!!" in Ruby [closed]

    - by Alex Maslakov
    Possible Duplicate: What does !! mean in ruby? Ruby, !! operator (a/k/a the double-bang) Sometimes I see a Ruby code like this def sent? !!@sent_at end It seems to be not logical. Is it necessary to use here double !? As far as I'm concerned, it might be just def sent? @sent_at end UPDATE: then what is the difference between these def sent? !!@sent_at end def sent? @sent_at.nil? end def sent? @sent_at == nil end

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  • Learn another useful programming language [closed]

    - by Sebi
    I know this question was here a lot of times and can't be answered at all, but im not looking for a single name, but rather for an advice in my situation. I learned programming with Java and now I'm developing in Java for more or less 5 years (at the university) and I thinks my programming skills their are really ok/average. I have also small experience in C/C++ and C#. Now I have some spare time and I'd like to learn a new language or deepen the knowledge of Java/C/C++. But how to choose the right language to learn? I'd like to learn a language which will be usefull in the future concerning working in a software development business? I know there is no single answer, but I'm sure you could mention some languages that are more usefull than others.

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  • Working in a Foreign Country [closed]

    - by iersoy
    How does it look like to be working in a foreign country? can u share your experiences with me? Is MCPD or MCITP certification and TOEFL-IELTS-Cambridge degrees will be enough for working in a foreign country? What needs to be done to find an employer to work in his/her company? EDIT: I live in Turkey,Istanbul and i like to work in one of these countries: USA UK Germany Italy France Sweden Denmark Finland Norway Switzerland Austria Holland Belgium Canada i need to make quick moves about my career and my path nowadays Thanks a lot

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  • pointer and malloc [closed]

    - by gcc
    How many methods/ways are there taking input by using with pointer and dynamic memory? Input: 3 1 2 n k l 2 1 2 p 4 55 62 * # x (x is stop value, first input always integer) Example code: p=malloc(sizeof(int)); scanf("%d",&num_arrays); while(1) { scanf("%c",&(*(p+i))); if(*(p+i)=='x') break; ++i; } "3" is stored in num_arrays. The other input values are stored in pointer[array].

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  • Favorite C/C++ questions for an interview [closed]

    - by Nullw0rm
    What are your favorite C/C++ interview questions? It may be question or contain question of concepts, some subjects are: Logic, multithreading, algorithms (and performance), STL, templates, inheritence, pointers. This is a useful tool for me, to look at what would be tested on a career-like application.

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  • Do we really need high level languages? [closed]

    - by i_love_c
    Seeing the amount of softwares developed (and still being developed) in C and considering the fact that C currently tops the TIOBE chart, I have this one question for you all: Do we really need high level languages like C# or F# or Ruby? Don't you think these so-called high level languages are actually spoiling programmers and resulting in suboptimal and non-efficient softwares?

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  • Whys is pdf format used? [closed]

    - by dan_vitch
    I will admit that I am new to the tech/dev field. It seems to become a trend that every time I have to work with pdfs a part of me dies. Why is this format as ubiquitous as it seems to be? Is it just non-tech people that prefer pdfs?

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  • PHP mail with multiple attachments and message in HTML format [closed]

    - by Jason
    I am new to PHP, so please don't mind if my question is silly. I would to like to make a PHP to send email with numerous attachments and the message of the email will be in HTML format. <html> <body> <form action="mail.php" method="post"> <table> <tr> <td><label>Name:</label></td> <td><input type="text" name="name" /></td> </tr> <tr> <td><label>Your Email:</label></td> <td><input type="text" name="email" /></td> </tr> <tr> <td><label>Attachment:</label></td> <td><input type="file" name="Attach" /></td> </tr> <tr> <td><input type="submit" value="Submit" /></td> </tr> </table> </form> <script language="javascript"> $(document).ready(function() { $("form").submit(function(){ $.ajax({ type: "POST", url: 'mail.php', dataType: 'json', data: { name: $('#name').val(), email: $('#email').val(), Attach: $('#Attach').val(), }, success: function(json){ $(".error, .success").remove(); if (json['error']){ $("form").after(json['error']); } if (json['success']){ $("form").remove(); $(".leftColWrap").append(json['success']); } } }); return false; }); }); </script> </body> </html> This is my HTML for filing in the information. And below is the mail.php <?php session_cache_limiter('nocache'); header('Expires: ' . gmdate('r', 0)); header('Content-type: application/json'); $timeout = time()+60*60*24*30; setcookie(Form, date("F jS - g:i a"), $timeout); $name=$_POST['name']; $email=$_POST['email']; $to="[email protected]"; //*** Uniqid Session ***// $Sid = md5(uniqid(time())); $headers = ""; $headers .= "From: $email \n"; $headers .= "MIME-Version: 1.0\n"; $headers .= "Content-Type: multipart/mixed; boundary=\"".$Sid."\"\n\n"; $headers .= "This is a multi-part message in MIME format.\n"; $headers .= "--".$Sid."\n"; $headers .= "Content-type: text/html; charset=utf-8\n"; $headers .= "Content-Transfer-Encoding: 7bit\n\n"; //*** Attachment ***// if($_FILES["fileAttach"]["name"] != "") { $FilesName = $_FILES["fileAttach"]["name"]; $Content = chunk_split(base64_encode(file_get_contents($_FILES["fileAttach"]["tmp_name"]))); $headers .= "--".$Sid."\n"; $headers .= "Content-Type: application/octet-eam; name=\"".$FilesName."\"\n"; $headers .= "Content-Transfer-Encoding: base64\n"; $headers .= "Content-Disposition: attachment; filename=\"".$FilesName."\"\n\n"; $headers .= $Content."\n\n"; } $message_to=" <html><body> <table class='page-head' align='center' width='100%'> <tr> <td class='left'> <h1>ABC</h1></td> <td class='right' width='63'> <img src='http://xxx/images/logo.png' /></td> </tr> </table><br /><br /> $name ($email) has just sent you an e-mail. </body></html>"; $message_from="<html><body> <table class='page-head' align='center' width='100%'> <tr> <td class='left'> <h1>ABC</h1></td> <td class='right' width='63'> <img src='http://xxx/images/logo.png' /></td> </tr> </table><br /><br /> Thanks for sending the email. </body></html>"; if ($name == "" || $email == "") { $error = "<font color=\"red\">Please fill in all the required fields.</font>"; } elseif (isset($_COOKIE['Form'])) { $error = "You have already sent the email. Please try again later."; } else { mail($to,"A new email from: $name",$message_to,$headers); mail($email,"Thank you for send the email",$message_from,$headers); $success = "Emai sent successfully!"; } $json = array('error' => $error, 'success' => $success); print(json_encode($json)); ?> May someone give some advises on the code? Thanks a lot.

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  • Suspension of Gmail account [closed]

    - by Ifeanyi Agu
    I have a Joomla site with my gmail account (google apps) being used as the SMTP server for sending mails. I also have a newsletter component on this site. I tried sending newsletter to all my subscribers and I noticed that the SMTP server could not be connected to. I then checked the emails of my company and noticed that the one I used to set it up was suspended. I cannot really explain why Google suspended the email account. Please could anyone tell me if Google saw the mails that were being sent as spam.

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  • dynamic memory allocation [closed]

    - by gcc
    i wanna write a program that creates (allocating memory) and manipulates (adding elements and increasing memory etc.) integer arrays dynamically according to given input sequences. input sequence which starts with the maximum number of arrays, includes integers to be put into arrays and some one letter characters which are commands to carry out some tasks (activating next array, deleting an array etc). also, i wanna create *c_arrays which is the address of the array whose elements are the actual capacities (How many integer slots are already allocated for an array?) of arrays how should i organize(set up) the algorithm?

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