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  • Is this a safe way to reference objects in JavaScript?

    - by John
    If I were to define two objects myDataStore and myDrawer something like this: var myDataStore = function(myObjectRef) { this.myInternalObject = myObjectRef; }; var myDrawer = function(myObjRef) { this.myInternalObject = myObjectRef; }; And if I were to create an object like so: (function(){ var myObject = window.myObject = function(){ this.dataStore = new myDataStore(this); this.drawer = new myDrawer(this); } })(); Then myObject.dataStore.myInternalObject, and myObject.drawer.myInternalObject, would simply be pointers back to the original 'myObject' - not taking up any additional memory in the browser. Yes? I am interested in implementing techniques like this - as it makes it easy for objects to communicate with each other.

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  • Non-empty list with null elements returned from Hibernate query

    - by John
    Hi, I'm new to hibernate so not sure if this is an expected behaviour, anyway: Session session = (Session)entityManager.getDelegate(); Criteria criteria = session.createCriteria(myRequest.class); criteria.add(Restrictions.eq("username", username)); criteria.setProjection(Projections.max("accesscount")); List<myRequest> results = criteria.list(); The returned results is a non-empty list with a single null element. I can't think of any reason why it should behave this way, any idea if this is the expected behaviour or have I done something wrong? System is on hibernate/Syabse. Thanks.

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  • response from server

    - by john
    When I create request to the server: <script language="javascript" type="text/javascript"> function ajaxFunction() var ajaxRequest; try{ ajaxRequest = new XMLHttpRequest(); } catch (e){ try{ } catch (e) { try{ ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e){ alert("Your browser broke!"); return false; } } } ajaxRequest.onreadystatechange = function(){ if(ajaxRequest.readyState == 4){ document.write(ajaxRequest.responseText); document.myForm.time.value = ajaxRequest.responseText; } } ajaxRequest.open("GET", "http://www.bbc.co.uk", true); ajaxRequest.send(null); } </script> Why response is nothing? Why response isnt html code of this web site?

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  • Best way to develop a secured application. With .net

    - by John S
    Hello, we are developing a windows application, and as most apps out there, there is a login form. What I don't like is that the login form validates the user and opens the main form if user and pass are correct. Simple as is. All the function calls etc are called without verifying the user and pass again, what should be the right thing to do. What's the best way to develop a secured application that if for any reason, the login form is by passed, the other function calls won't run? Some devs suggested that we include an user and pass params on each function, which seems to be wrong... thanks!

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  • Best way to handle storing (possibly NULL) char * in a std::string

    - by John
    class MyClass { public: void setVar(const char *str); private: std::string mStr; int maxLength; //we only store string up to this length }; What's the best approach to implement setVar when the external code is quite likely to pass in NULL for an empty string (and cannot be changed)? I currently do something a bit like: void MyClass::setVar(const char *str) { mStr.assign(str ? str : "",maxLength); } But it seems kind of messy. ideas?

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  • database deign advice wanted: double data entry

    - by john
    hi, I'm designing a database for capturing clinical trial data. The data are entered twice by two persons, independently and the results must be matched. What are the best database tools to use to achieve the best results. Any one has similar experiences? Your helps are highly appreciated. thanks.

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  • How to test processing a list of files within a directory using RSpec?

    - by John Topley
    I'm pretty new to the world of RSpec. I'm writing a RubyGem that processes a list of files within a specified directory and any sub-directories. Specifically, it will use Find.find and append the files to an Array for later output. I'd like to write a spec to test this behaviour but don't really know where to start in terms of faking a directory of files and stubbing Find.find etc. This is what little I have so far: it "should return a list of files within the specified directory" do end Any help much appreciated!

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  • simplify in declaring variables value in php

    - by Robert John Concepcion
    $jan5 = 0; $feb5 = 0; $mar5 = 0; $apr5 = 0; $may5 = 0; $jun5 = 0; $jul5 = 0; $aug5 = 0; $sep5 = 0; $oct5 = 0; $nov5 = 0; $dec5 = 0; $jan4 = 0; $feb4 = 0; $mar4 = 0; $apr4 = 0; $may4 = 0; $jun4 = 0; $jul4 = 0; $aug4 = 0; $sep4 = 0; $oct4 = 0; $nov4 = 0; $dec4 = 0; $jan3 = 0; $feb3 = 0; $mar3 = 0; $apr3 = 0; $may3 = 0; $jun3 = 0; $jul3 = 0; $aug3 = 0; $sep3 = 0; $oct3 = 0; $nov3 = 0; $dec3 = 0; this is the most time consuming code when i try to make for example i want the default value of $jan5 is equal to zero.. can some one teach me how to make this short? thank you so much for reading $date = 'smi_initialdate'; $level = 'smi_level'; $year = '2012'; $result1 = mysql_query("SELECT *, DATE_FORMAT( $date, '%m' ) As monthz FROM eis_mngt_sales_iti WHERE year($date) = '$year' ORDER BY $date"); while($row=mysql_fetch_array($result1)) { $count++; if($row['smi_level']=='5star') { if($row['monthz']==1) { $jan++; }elseif($row['monthz']==2) { $feb++; }elseif($row['monthz']==3) { $mar++; }elseif($row['monthz']==4) { $apr++; }elseif($row['monthz']==5) { $may++; }elseif($row['monthz']==6) { $jun++; }elseif($row['monthz']==7) { $jul++; }elseif($row['monthz']==8) { $aug++; }elseif($row['monthz']==9) { $sep++; }elseif($row['monthz']==10) { $oct++; }elseif($row['monthz']==11) { $nov++; }elseif($row['monthz']==12) { $dec++; } } } i decide to put this $jan5 = 0;$feb5 = 0;$mar5 = 0;$apr5 = 0;$may5 = 0;$jun5 = 0;$jul5 = 0; so that if the data did not pass to this condition if($row['smi_level']=='5star') they have the return value of zero(0). so that my output can adapt in this code [<?php echo$jan5.",".$feb5.",".$mar5.",".$apr5.",".$may5.",".$jun5.",".$jul5.",".$aug5.",".$sep5.",".$oct5.",".$nov5.",".$dec5; ?] if a dont use the above code the $jan5 = 0;$feb5 = 0;$mar5 = 0;$apr5 = 0;$may5 = 0;$jun5 = 0;$jul5 = 0;................ when i echo or print it i look like this 1,2,5,11,12 but with the use of that(the first sample code above) the output will be 1,0,0,0,0,0,0,1,2,5,11,12. thank, sorry if this became confusing, sorry about my grammar

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  • Php, in_array with no exactly match

    - by John Smith
    I want to do the following: $a = array(); $a[] = array(1,2); $a[] = array(2,5); $a[] = array(3,4); var_dump (in_array(array(2,5), $a)); this returns OK, as it expected, but if the source array is not fully matched: $a = array(); $a[] = array(1,2, 'f' => array()); $a[] = array(2,5, 'f' => array()); $a[] = array(3,4, 'f' => array()); var_dump (in_array(array(2,5), $a)); it returns false. Is there a way to do it with the built-in way, or I have to code it?

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  • Ajax Code to run PHP query After Facebook Like Button is Clicked

    - by John
    I have the PHP below on a file called fblike.php. On another file, I have the Facebook Like button. The Like button functions. I would like to run the code below when the Facebook Like button is clicked. I know that FB.Event.subscribe('edge.create', function(response) {} is supposed to run whenever the Like button is clicked. I know that I am probably supposed to use Javascript and maybe Ajax to cause the PHP on fblike.php to run. But after multiple tries, I can't get it to work. What is the specific Ajax code that I could include within the Facebook Event? Do I need to do anything to the Like button code to allow the Facebook Event to work? $submissionid = $_POST['submissionid']; $uid = $_POST['uid']; mysql_connect("server", "username", "password") or die(mysql_error()); mysql_select_db("database") or die(mysql_error()); $q = "INSERT INTO fblikes VALUES (NULL, '$submissionid', '$uid', NULL)"; $r = mysql_query($q); if($r) { echo "Success!"; } elseif(!$r) { echo "Failed!"; }

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  • Can you ask Google how common a search is?

    - by John
    I'm not familiar with Google Analytics but I think you can use it to see how many people get to your site using different search strings. But if you don't yet have the site, can you simply ask Google how popular a search is? For instance say you're choosing a new product name/slogan/etc. First of all, you want to see if that is already very crowded, which is easy through just Googling it. But now you might want to see if anyone is actually searching for this... an ideal situation would be to find a search-string lots of people are using, which doesn't put your competitors on the #1 spot. Is this possible? Not exactly programming-related, but closely related to web-development IMO... please vote to close if you disagree, I won't be offended!

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  • Mysql ADDDATE() or DATE_ADD() with table columns?

    - by John
    How do I do something like the following SELECT ADDDATE(t_invoice.last_bill_date, INTERVAL t_invoice.interval t_invoice.interval_unit) FROM t_invoice ...where the column t_invoice.last_bill_date is a date, t_invoice.interval is an integer and t_invoice.interval_unit is a string. Basically, I want to determine a person's next bill date based on his desired billing frequency. Is there a better way to achieve this?

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  • Configuring jdbc-pool (tomcat 7)

    - by john
    i'm having some problems with tomcat 7 for configuring jdbc-pool : i`ve tried to follow this example: http://www.tomcatexpert.com/blog/2010/04/01/configuring-jdbc-pool-high-concurrency so i have: conf/server.xml <GlobalNamingResources> <Resource type="javax.sql.DataSource" name="jdbc/DB" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/mydb" username="user" password="password" /> </GlobalNamingResources> conf/context.xml <Context> <ResourceLink type="javax.sql.DataSource" name="jdbc/LocalDB" global="jdbc/DB" /> <Context> and when i try to do this: Context initContext = new InitialContext(); Context envContext = (Context)initContext.lookup("java:/comp/env"); DataSource datasource = (DataSource)envContext.lookup("jdbc/LocalDB"); Connection con = datasource.getConnection(); i keep getting this error: javax.naming.NameNotFoundException: Name jdbc is not bound in this Context at org.apache.naming.NamingContext.lookup(NamingContext.java:803) at org.apache.naming.NamingContext.lookup(NamingContext.java:159) pls help tnx

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  • Default string arguments

    - by John.M
    myPreciousFunction(std::string s1 = "", std::string s2 = "") { } int main() { myPreciousFunction(); } can i make the arguments look any more prettier? i want there to be empty string if no arguments were supplied.

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  • What's the best way to stop multiple instances of a Windows app being launched?

    - by John
    Many Windows apps (like Skype or MSN for instance) don't let you start multiple instances, rather trying to run it a 2nd time just leaves the existing version running. Is this typically done in some simple way - the start-menu shortcut is a 'wrapper' app around the main app - or is there some registry magic you can do to delegate the problem to Windows itself? Specifically dealing with Win32 here (unmanaged C++) but happy to hear more general solutions as long as they are workable on Windows XP or alter.

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