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  • Java: split a List into two sub-Lists?

    - by Chris Conway
    What's the simplest, most standard, and/or most efficient way to split a List into two sub-Lists in Java? It's OK to mutate the original List, so no copying should be necessary. The method signature could be /** Split a list into two sublists. The original list will be modified to * have size i and will contain exactly the same elements at indices 0 * through i-1 as it had originally; the returned list will have size * len-i (where len is the size of the original list before the call) * and will have the same elements at indices 0 through len-(i+1) as * the original list had at indices i through len-1. */ <T> List<T> split(List<T> list, int i); [EDIT] List.subList returns a view on the original list, which becomes invalid if the original is modified. So split can't use subList unless it also dispenses with the original reference (or, as in Marc Novakowski's answer, uses subList but immediately copies the result).

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  • Using boost asio for pub/sub style tcp in a game loop

    - by unohoo
    I have been reading through the boost asio documentation for a couple of hours now, and while I think the documentation is really great, I am still left a bit confused on how to implement the system that I need. I have to stream info, from a game engine, to a list of computers over tcp. One snag is that, unlike traditional pub/sub, the computer that does the distribution of info is actually the computer that has to connect to the subscribers as well (instead of the subscribers registering with the publisher). This is done via a config file - a list of ip's/ports along with the data that they each require. The subscribers listen, but do not know the ip of the publisher. (As a side note, I'm quite new to network programming, so maybe I'm missing something .. but it's strange that I do not find much information regarding this style of "inverted" client-server model..) I am looking for suggestions for the implementation of such a system using boost asio. Of course I have to integrate the networking into an already existing engine, so with regards to that: What would be a good way to handle messages being sent to multiple computers every frame? Use async_write, call io_service.run and then reset every frame? Would having io_service.run have its own thread be better? Or should I just use threads and use blocking writes?

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  • How to get the second sub element of every element in a list in R

    - by PaulHurleyuk
    I know I've come across this problem before, but I'm having a bit of a mental block at the moment. and as I can't find it on SO, I'll post it here so I can find it next time. I have a dataframe that contains a field representing an ID label. This label has two parts, an alpha prefix and a numeric suffix. I want to split it apart and create two new fields with these values in. structure(list(lab = c("N00", "N01", "N02", "B00", "B01", "B02", "Z21", "BA01", "NA03")), .Names = "lab", row.names = c(NA, -9L ), class = "data.frame") df$pre<-strsplit(df$lab, "[0-9]+") df$suf<-strsplit(df$lab, "[A-Z]+") Which gives lab pre suf 1 N00 N , 00 2 N01 N , 01 3 N02 N , 02 4 B00 B , 00 5 B01 B , 01 6 B02 B , 02 7 Z21 Z , 21 8 BA01 BA , 01 9 NA03 NA , 03 So, the first strsplit works fine, but the second gives a list, each having two elements, an empty string and the result I want, and stuffs them both into the dataframe column. How can I select the second sub-element from each element of the list ? (or, is there a better way to do this) Thanks Paul.

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  • XSD: Different sub-elements depending on attribute/element value

    - by AndiDog
    Another XSD question - how can I achieve that the following XML elements are both valid: <some-element> <type>1</type> <a>...</a> </some-element> <some-element> <type>2</type> <b>...</b> </some-element> The sub-elements (either <a> or <b>) should depend on the content of <type> (could also be an attribute). It would be so simple in RelaxNG - but RelaxNG doesn't support key integrity :( Is there a way to implement this in XSD? Note: XML schema version 1.1 supports <xs:alternative>, which might be a solution, but afaik no reference implementation (e.g. libxml2) supports this yet. So I'm searching for workarounds. The only way I've come up with is: <type>1</type> <some-element type="1"> <!-- simple <xs:choice> between <a> and <b> goes here --> <a>...</a> </some-element> <!-- and now create a keyref between <type> and @type -->

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  • Javascript not working in IE but works in Firefox chrome

    - by user1290528
    So i have the following php page with a java script that gets the total of items based on their quatity, then inputs the total into a text box for each item. In ie the text boxes are being filled with $NaN. While in firefox, chrome the text boxes are filled with the correct values. Any help would be graatly appreciated. <?php echo $_SESSION['SESS_MEMBER_ID']; require_once('auth.php'); ?> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> <title>Breakfast Menu</title> <link href="loginmodule.css" rel="stylesheet" type="text/css"> <script type='text/javascript'> var totalarray=new Array(); var totalarray2= new Array(); var runningtotal = 0; var runningtotal2 = 0; var discount = .2; var discounttotal = 0; var discount1 = 0; runningtotal = runningtotal * 1; runningtotal2 = runningtotal2 * 1; function displayResult(price,init) { var newstring = "quantity"+init; var totstring = "total"+init; var quantity = document.getElementById(newstring).value; var quantity = parseFloat(quantity); var test = price * quantity; var test = test.toFixed(2); document.getElementById(newstring).value = quantity; document.getElementById(totstring).value = "$" + test; totalarray[init] = test; getTotal(); } function getTotal(){ runningtotal = 0; var i=0; for (i=0;i<totalarray.length;i++){ totalarray[i] = totalarray[i] *1; runningtotal = runningtotal + totalarray[i]; discounttotal = totalarray[i] * discount; discounttotal = totalarray[i] - discounttotal; This line is where IE shows its first error document.getElementById('totalcost').value="$" + runningtotal.toFixed(2); } var orderpart1 = document.getElementById('totalcost').value; var orderpart1 = orderpart1.substr(1); var orderpart1 = orderpart1 * 1; var orderpart2 = document.getElementById('totalcost2').value; var orderpart2 = orderpart2.substr(1); var orderpart2 = orderpart2 * 1; var ordertot = orderpart1 + orderpart2; document.getElementById('ordertotal').value ="$"+ ordertot.toFixed(2) } function displayResult2(price2,init2) { var newstring2 = "quantity2"+init2; var totstring2 = "total2"+init2; var quantity2 = document.getElementById(newstring2).value; var quantity2 = parseFloat(quantity2); var test2 = price2 * quantity2; var test2 = test2.toFixed(2); document.getElementById(newstring2).value = quantity2; document.getElementById(totstring2).value = "$" + test2; totalarray2[init2] = test2; getTotal2(); } function getTotal2(){ runningtotal2 = 0; var i=0; for (i=0;i<totalarray2.length;i++){ totalarray2[i] = totalarray2[i] *1; runningtotal2 = runningtotal2+ totalarray2[i]; This is where IE shows its second error document.getElementById('totalcost2').value="$" + runningtotal2.toFixed(2); }//IE Shows Second error here var orderpart1 = document.getElementById('totalcost').value; var orderpart1 = orderpart1.substr(1); var orderpart1 = orderpart1 * 1; var orderpart2 = document.getElementById('totalcost2').value; var orderpart2 = orderpart2.substr(1); var orderpart2 = orderpart2 * 1; var ordertot = orderpart1 + orderpart2; document.getElementById('ordertotal').value ="$"+ ordertot.toFixed(2); } </script> </head> <body> <?php include("newnew.php"); ?> <td style="vertical-align: top; width: 80%; height:80%;"><br> <div style="text-align: center;"> <form action="testplaceorder.php" method="post" onSubmit="return confirm('Are you sure?');"> <h4>Employee Breakfast Order Form</h4> <h1 align="left">Breakfest Foods</h1> <table border='0' cellpadding='0' cellspacing='0'> <tr> <td> <table width="100%" border="1"> <tr> <th>Item&nbsp&nbsp&nbsp&nbsp&nbsp</th> <th>Price&nbsp&nbsp&nbsp&nbsp&nbsp </th> <th>Quantity&nbsp&nbsp&nbsp&nbsp&nbsp</th> <th>Total&nbsp&nbsp&nbsp&nbsp&nbsp</th> </tr> <?php mysql_connect("localhost", "seniorproject", "farmingdale123") or die(mysql_error()); mysql_select_db("fsenior") or die(mysql_error()); $result = mysql_query("SELECT name, price,foodid FROM Food where foodtype='br'") or die(mysql_error()); $init = 0; while(list($name, $price, $brId) = mysql_fetch_row($result)) { echo "<tr> <td>$name</td> <td>\$$price</td> <td><select name='quantity$init' id='quantity$init' onchange='displayResult($price,$init)'><option>0</option><option>1</option><option>2</option><option>3</option><option>4</option><option>5</option><option>6</option><option>7</option><option>8</option><option>9</option></td> <td><input name='total$init' type='text' id='total$init' readonly='readonly' value='\$0.00'></td> </tr>" ; echo "<script type='text/javascript'>displayResult($price,$init);</script>"; $foodname = "'SESS_FOODNAME_" . $init . "'"; $foodid = "'SESS_FOODID_" . $init."'"; $_SESSION[$foodname] = $name; $_SESSION[$foodid] = $brId; $init = $init+1; } $_SESSION['SESS_INIT'] = $init; ?> <tr> <td></td> <td></td> <td>Total Cost</td> <td><input name='totalcost' type='text' id='totalcost' readonly='readonly' value='$0.00'></td> </tr> <tr><td></td><td></td><td>Discount</td><td><input name='discountvalue1' id ='discountvalue1' type='text' readonly='readonly' value='20%'></td> </tr> <tr><td></td><td></td><td>Total After Discount</td><td><input name='discounttotal1' id ='discounttotal1' type='text' readonly='readonly' value='$0.00'></td></tr> </table> <tr> <td><br></td> </tr> </table> <h1 align="left">Breakfest Drinks</h1> <table border='0' cellpadding='0' cellspacing='0'> <tr> <td> <table width="100%" border="1"> <tr> <th>Item&nbsp&nbsp&nbsp&nbsp&nbsp</th> <th>Price&nbsp&nbsp&nbsp&nbsp&nbsp </th> <th>Quantity&nbsp&nbsp&nbsp&nbsp&nbsp</th> <th>Total&nbsp&nbsp&nbsp&nbsp&nbsp</th> </tr> <?php mysql_connect("localhost", "****", "***") or die(mysql_error()); mysql_select_db("fsenior") or die(mysql_error()); $result2 = mysql_query("SELECT drinkname, price,drinkid FROM Drinks where drinktype='br'") or die(mysql_error()); $init2 = 0; while(list($name2, $price2, $brId2) = mysql_fetch_row($result2)) { echo "<tr> <td>$name2</td> <td>\$$price2</td> <td><select name='quantity2$init2' id='quantity2$init2' onchange='displayResult2($price2,$init2)'><option>0</option><option>1</option><option>2</option><option>3</option><option>4</option><option>5</option><option>6</option><option>7</option><option>8</option><option>9</option></td> <td><input name='total2$init2' type='text' id='total2$init2' readonly='readonly' value='\$0.00'></td> </tr>" ; echo "<script type='text/javascript'>displayResult2($price2,$init2);</script>"; $drinkname = "'SESS_DRINKNAME_" . $init2 . "'"; $drinkid = "'SESS_DRINKID_" . $init2."'"; $_SESSION[$drinkname] = $name2; $_SESSION[$drinkid] = $brId2; $init2 = $init2+1; } $_SESSION['SESS_INIT2'] = $init2; ?> <tr> <td></td> <td></td> <td>Total Cost</td> <td><input name='totalcost2' type='text' id='totalcost2' readonly='readonly' value='$0.00'></td> </tr> </table> <tr> <td><br></td> </tr> </table> <table border="2"> <tr><td>Total Order Cost:</td><td> <?php echo "<input name='ordertotal' type='text' id='ordertotal' readonly='readonly' value='\$0.00'></td></table>"; ?> <p align="left"><input type='submit' name='submit' value='Submit'/></p> </form> </div></td> </tr> </tbody> </table></td> </tr> </tbody> </table> </body> </html>

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  • What kind of sorting does the Windows 7 login screen use for usernames?

    - by Paul D. Waite
    I’ve set up ten Windows 7 user accounts, so that I can test different versions of Google Chrome*. I’ve named the accounts “Chrome 01”, “Chrome 02”, and so on. Ideally, I’d like the accounts sorted on the login screen by Chrome version, which is why I added the leading zero to the version number (assuming it was an alphabetic sort). However, when I created the “Chrome 10” account, it ended up sorted between “Chrome 01” and “Chrome 02”. What is going on? *(Chrome installs are user-account-specific)

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  • Uncaught Error: INDEX_SIZE_ERR

    - by Gart
    I am drawing on a canvas with the following line: ctx.drawImage(compositeImage, 0, 0, image.width, image.height, i, j, scaledCompositeImageWidth, scaledCompositeImageHeight); This code has executed error free on Safari, Chrome, Firefox (and even IE using google's excanvas library). However, a recent update to Chrome now throws the following error: Uncaught Error: INDEX_SIZE_ERR: DOM Exception 1 This code often positions part or all of the drawn image OFF the canvas, anyone got any idea what's going on here?

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  • about sending messages among bg.html, popup.html and contentscript.js

    - by T_t
    Hi!:) In my extension, when a button named "mybutton1" in the popup.html is clicked, it sends a message "getvar1" to the contentscript.js, then the contentscript.js sends a message "i want var1" to the background.html to get an object named "var1".If the button named "mybutton2" is clicked, the contentscript.js gets the "var2" object. How should i do under this condition? What's more, i am a little confused about the chrome.extension.onRequest.addListener method and chrome.extension.sendRequest method.Could someone tell me the mechanism of the two methods? Thanks!

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  • Accessing browser events

    - by netprotector
    Hi, I am writing a chrome plugin in which I would like to receive events such as "load", "unload" of window and page. However, I'm not getting any concrete clue to start with. Can anyone tell me how to capture DOM event in plugin? Does Chrome support this feature? Thank you.

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  • Javascript click function

    - by Gordon Carpenter-Thompson
    I've got some code which works fine in IE but unfortunately not in Google Chrome/Firefox. It relies upon calling a click() event on a button from javascript. Reading around it seems that this is an IE specific extension (doh). Is there any way I can do a similar thing in chrome + firefox? Thanks

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  • sub menu border calls onmouseout event

    - by insanepaul
    I've created a simple menu and submenu with tags(not allowed to use ul elements). To access the submenu the user hovers their mouse over the menu item. I use the onmouseover and onmouseout events to either show or hide the sub menu depending on which item is selected. A pipe (|) is used to seperate each submenu item and this is what is causing me problems. When a user hovers their mouse above the pipe character the subMenu div calls the onmouseout event which is not what I want. So I added padding around the pipe character and a minus margin so that there were no gaps between the pipe character and the other elements. This worked for all browsers including IE8. But in IE7 (I haven't tested IE6 yet) the submenu div calls the onmouseout event when I touch the top bit of either the left or right border of the pipe character span element. <div id="subMenu" onmouseout="hideSubMenu()" > <div id="opinionSubMenu" onmouseover="showOpinionSubMenu()"> <a id="Blogs" href="HTMLNew.htm">BLOGS</a> <span class="SubMenuDelimiter">|</span> <a id="Comments" href="HTMLNew.htm">COMMENTS</a> <span class="SubMenuDelimiter">|</span> <a id="Views" href="HTMLNew.htm">VIEWS</a> </div> <div id="learningSubMenu" onmouseover="showLearningSubMenu()"> <a id="Articles" href="HTMLNew.htm">ARTICLES</a> <span class="SubMenuDelimiter">|</span> <a id="CoursesCases" href="HTMLNew.htm">COURSES & CASES</a> <span class="SubMenuDelimiter">|</span> <a id="PracticeImpact" href="HTMLNew.htm">PRACTICE IMPACT</a> </div> </div> This is my css class #subMenu{ padding:10px 0px; background-color:#F58F2D; font-weight:normal; text-decoration:none; font-family:Lucida Sans Unicode; font-size:14px; float:left; width:100%; display:none;} #Blogs, #Comments, #Views, #Articles { padding:10px 5px; background:none repeat scroll 0 0 transparent; color:#000000; font-weight:normal; text-decoration:none; border:solid 1px black;} #Blogs:hover, #Comments:hover, #Views:hover, #Articles:hover{ color:#ffffff; text-decoration:none;} .SubMenuDelimiter{ padding:10px 5px; margin:10px -5px;}

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  • Are IE 9 will have a place in heart of user ?

    - by anirudha
    in a advertisement of IE 9 MSFT compare two product first is their IE9 and second is chrome 6. I know 6 is not currently [9] but no objection because may be they make ads when 6 is currently version and have RC or beta in their hands. on IE 9 test-drive website they show many of people ads to show the user that IE9 is performance better or other chrome or Firefox not. well they not compare with Firefox because last days firefox not still in news and search trends like before RC release many of user googling for them. Well I myself found IE9 perform smoother then chrome. but what MSFT do after IE9 nothing they waiting for IE 10 not for give updates not as well as Google chrome and Firefox. Are IE9 have anything new for Developer even a small or big. well they tell you blah or useless things everytime when they make for next version no matter for you but a matter for them because they add a new thing even useless for developer. I am not have any feeling with IE bad but I like to make reviews as well as I can make. I show you something who I experience with IE and someother browser like Chrome and Firefox. IE 9 still have no plugin as well as other provided like Firefox have Firebug a great utilities who is best option for developer to debug their code. IE9 developer tool is good but still you never customize them or readymade customization available to work as in firefox many of person make customization for firebug like example :- firepicker for picking color in firebug , firebug autocomplete for intellisense like feature when you write JavaScript inside console panel , pixelperfect , firequery , sitepoint reference and many other great example we all love to use. as other things that Firefox give many things customizable like themes , ui and many thing customization means more thing user or developer want to make themselves and more contribution make them better software so Firefox is great because customization is a great thing inside firefox and chrome. if you read some post of developer on MSDN to what’s new in IE 9 developer tool that you feel they are joking whenever you see some other things of Firefox and chrome. in a Firefox a plugin perform many much things but in IE still use IE 9 developer tool no other option like in Firefox use Firebug and many other utilities to make development easier and time saving and best as we can do.if you see Firefox page on mozilla that sublines of firefox is high performance easy customization advanced security well you can say what’s performance but there is no comparison with IE because IE have only performance and nothing else. but Firefox have these three thing to make product love. and third thing I really love that security yeah security. from long time before whenever IE6 is no hackproff and many other easily hack IE6 whenever Firefox is secure. I found myself that many of website install a software on client’s computer and they still not know about them so they track everything. sometime they hijack the homepage and make their website as their homepage. sometime they do something and you trying  to go to  any website then they go to their site first. the problem I telling about not long before it’s time of late in 2008 whenever Firefox is much better then IE6. if someone have bad experience with anyone of these software share with us I like to hear your voice. whenever IE still not for use Firefox is a good option for us even user or developer. I not know why someone make next version of IE. IE still have time to go away from Web. Firefox not rude as IE they still believe in user feedback and chrome is also open the door for feedback on their product gooogle Chrome. but what thing they made in IE on user feedback nothing. they still thing to teach what they maked not thing about what user need. if you spent some hour on firefox and chrome then you found what’s matter. what thing you have whenever you use IE or other browser like google chrome and Firefox :- as a user IE give you nothing even tell you blah blah and more blah but still next version of IE means next IE6 for the web. as in Google chrome you find plugins addons or customization to make experience better but in IE9 you can’t customize anything even the themes they have by default. Firefox already have a great list of plugins or addons to make experience better with Web but IE9 have nothing. this means IE9 not for user and other like chrome and firefox give you much better experience then IE. next thing after user is developer. first thing is that all developer want smooth development who save their time not take too perhaps saving.posts on IE9 show that a list of thing improved in IE 9 developer tool but are one developer tool enough for web development so developer need more utilities to solve different different type of puzzle who IE 9 never give like in Firefox you have utilities to do a task even small or big one. in chrome same experience you have but IE9 never give any plugin or utilities to make our work faster even they are new headache for developer because IE not give update as soon as other because in Firefox and in chrome if a bug is reported then they solve them fast and distribute them in next version of software very soon but in IE wait for a long time like IE 9 and IE 8 have no official release between them as update. As my conclusion there is no reason to use IE and adopt 9 again. it’s really not for Developer or user even newbie or smart people. as a rule I want to beware you with IE because it’s my responsibilities to move the thing in good way as I can make. well are you sure that there is no reason or profit they thing to have with IE9  if not why they forget luna [windows xp] user. because they are old nothing they want to force user to give them some money by purchasing a new version of OS. so this a thing why they marketed their software. if you thing about what firefox and chrome want to make : Mozilla's mission is to promote openness, innovation and opportunity on the web. chrome mission we all see whenever we use them. but IE9 is a trick they promote because they want to add something to next version of windows. if somebody like IE9 [even surprised by ads they see or post they read] then they purchase windows soon as they possible. Well you feel that I am opposition of IE9 and favor of chrome and Firefox yeah you feel right I hate IE from a heart not from a pencil. well you get same thing when you have trying three product major I described here Chrome firefox and IE. well don’t believe on the blogs , posts or article who are provided by the merchant or vender’s website. open the eyes read and thing what they talk and feel are they really true. if you confused that compare with some other. now you know the true because no one telling so badly as a user can described who use them not only one who make their feature. always open the eyes don’t believe use your mind and find the truth. thanks for reading my post good bye and take care

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  • Zend Framework, Zend_Form_Element how to set custom name?

    - by ikso
    Hello, I have form, where some fields are looks like rows, so I can add/delete them using JS. For example: Field with ID=1 (existing row) <input id="id[1]" type="text" name="id[1]" value="1" /> <input id="name[1]" type="text" name="name[1]" value="100" /> Field with ID=2 (existing row) <input id="name[2]" type="text" name="name[2]" value="200" /> <input id="name[2]" type="text" name="name[2]" value="200" /> new row created by default (to allow add one more row to existing rows) <input id="id[n0]" type="text" name="id[n0]" value="" /> <input id="name[n0]" type="text" name="name[n0]" value="" /> new row created by JS <input id="id[n1]" type="text" name="id[n1]" value="" /> <input id="name[n1]" type="text" name="name[n1]" value="" /> So than we will proceed form, we will know what rows to update and what to add (if index starts with "n" - new, if index is number - existent element). I tried subforms... but do I have to create subform for each field? If I use following code: $subForm = new Zend_Form_SubForm(); $subForm->addElement('Text', 'n0'); $this->addSubForm($subForm, 'pid'); $subForm = new Zend_Form_SubForm(); $subForm->addElement('Text', 'n0'); $this->addSubForm($subForm, 'name'); What is the best way for this? 1) Use subforms? 2) Extend Zend/Form/Decorator/ViewHelper.php to use names like name[nX]? 3) Other solutions? Thanks.

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  • Problem retrieving values from Zend_Form_SubForms - no values returned

    - by anu iyer
    I have a Zend_Form that has 4 or more subforms. /** Code Snippet **/ $bigForm = new Zend_Form(); $littleForm1 = new Form_LittleForm1(); $littleForm1->setMethod('post'); $littleForm2 = new Form_LittleForm2(); $littleForm2->setMethod('post'); $bigForm->addSubForm($littleForm1,'littleForm1',0); $bigForm->addSubForm($littleForm2,'littleForm2',0); On clicking the 'submit' button, I'm trying to print out the values entered into the forms, like so: /** Code snippet, currently not validating, just printing **/ if($this-_request-getPost()){ $formData = array(); foreach($bigForm->getSubForms() as $subForm){ $formData = array_merge($formData, $subForm->getValues()); } /* Testing */ echo "<pre>"; print_r($formData); echo "</pre>"; } The end result is that - all the elements in the form do get printed, but the values entered before posting the form don't get printed. Any thoughts are appreciated...I have run around circles working on this! Thanks in advance!

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  • SQL query mixing aggregated results and single values

    - by Paul Flowerdew
    I have a table with transactions. Each transaction has a transaction ID, and accounting period (AP), and a posting value (PV), as well as other fields. Some of the IDs are duplicated, usually because the transaction was done in error. To give an example, part of the table might look like: ID PV AP 123 100 2 123 -100 5 In this case the transaction was added in AP2 then removed in AP5. Another example would be: ID PV AP 456 100 2 456 -100 5 456 100 8 In the first example, the problem is that if I am analyzing what was spent in AP2, there is a transaction in there which actually shouldn't be taken into account because it was taken out again in AP5. In the second example, the second two transactions shouldn't be taken into account because they cancel each other out. I want to label as many transactions as possible which shouldn't be taken into account as erroneous. To identify these transactions, I want to find the ones with duplicate IDs whose PVs sum to zero (like ID 123 above) or transactions where the PV of the earliest one is equal to sum(PV), as in the second example. This second condition is what is causing me grief. So far I have SELECT * FROM table WHERE table.ID IN (SELECT table.ID FROM table GROUP BY table.ID HAVING COUNT(*) > 1 AND (SUM(table.PV) = 0 OR SUM(table.PV) = <PV of first transaction in each group>)) ORDER BY table.ID; The bit in chevrons is what I'm trying to do and I'm stuck. Can I do it like this or is there some other method I can use in SQL to do this? Edit 1: Btw I forgot to say that I'm using SQL Compact 3.5, in case it matters. Edit 2: I think the code snippet above is a bit misleading. I still want to mark out transactions with duplicate IDs where sum(PV) = 0, as in the first example. But where the PV of the earliest transaction = sum(PV), as in the second example, what I actually want is to keep the earliest transaction and mark out all the others with the same ID. Sorry if that caused confusion. Edit 3: I've been playing with Clodoaldo's solution and have made some progress, but still can't get quite what I want. I'm trying to get the transactions I know for certain to be erroneous. Suppose the following transactions are also in the table: ID PV AP 789 100 2 789 200 5 789 -100 8 In this example sum(PV) < 0 and the earliest PV < sum(PV) so I don't want to mark any of these out. If I modify Clodoaldo's query as follows: select t.* from t left join ( select id, min(ap) as ap, sum(pv) as sum_pv from t group by id having sum(pv) <> 0 ) s on t.id = s.id and t.ap = s.ap and t.pv = s.sum_pv where s.id is null This gives the result ID PV AP 123 100 2 123 -100 5 456 -100 5 456 100 8 789 100 3 789 200 5 789 -100 8 Whilst the first 4 transactions are ok (they would be marked out), the 789 transactions are also there, and I don't want them. But I can't figure out how to modify the query so that they're not included. Any ideas?

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  • ASP.NET how to implement IServiceLayer

    - by rockinthesixstring
    I'm trying to follow the tutorial found here to implement a service layer in my MVC application. What I can't figure out is how to wire it all up. here's what I have so far. IUserRepository.vb Namespace Data Public Interface IUserRepository Sub AddUser(ByVal openid As String) Sub UpdateUser(ByVal id As Integer, ByVal about As String, ByVal birthdate As DateTime, ByVal openid As String, ByVal regionid As Integer, ByVal username As String, ByVal website As String) Sub UpdateUserReputation(ByVal id As Integer, ByVal AmountOfReputation As Integer) Sub DeleteUser(ByVal id As Integer) Function GetAllUsers() As IList(Of User) Function GetUserByID(ByVal id As Integer) As User Function GetUserByOpenID(ByVal openid As String) As User End Interface End Namespace UserRepository.vb Namespace Data Public Class UserRepository : Implements IUserRepository Private dc As DataDataContext Public Sub New() dc = New DataDataContext End Sub #Region "IUserRepository Members" Public Sub AddUser(ByVal openid As String) Implements IUserRepository.AddUser Dim user = New User user.LastSeen = DateTime.Now user.MemberSince = DateTime.Now user.OpenID = openid user.Reputation = 0 user.UserName = String.Empty dc.Users.InsertOnSubmit(user) dc.SubmitChanges() End Sub Public Sub UpdateUser(ByVal id As Integer, ByVal about As String, ByVal birthdate As Date, ByVal openid As String, ByVal regionid As Integer, ByVal username As String, ByVal website As String) Implements IUserRepository.UpdateUser Dim user = (From u In dc.Users Where u.ID = id Select u).Single user.About = about user.BirthDate = birthdate user.LastSeen = DateTime.Now user.OpenID = openid user.RegionID = regionid user.UserName = username user.WebSite = website dc.SubmitChanges() End Sub Public Sub UpdateUserReputation(ByVal id As Integer, ByVal AmountOfReputation As Integer) Implements IUserRepository.UpdateUserReputation Dim user = (From u In dc.Users Where u.ID = id Select u).FirstOrDefault ''# Simply take the current reputation from the select statement ''# and add the proper "AmountOfReputation" user.Reputation = user.Reputation + AmountOfReputation dc.SubmitChanges() End Sub Public Sub DeleteUser(ByVal id As Integer) Implements IUserRepository.DeleteUser Dim user = (From u In dc.Users Where u.ID = id Select u).FirstOrDefault dc.Users.DeleteOnSubmit(user) dc.SubmitChanges() End Sub Public Function GetAllUsers() As System.Collections.Generic.IList(Of User) Implements IUserRepository.GetAllUsers Dim users = From u In dc.Users Select u Return users.ToList End Function Public Function GetUserByID(ByVal id As Integer) As User Implements IUserRepository.GetUserByID Dim user = (From u In dc.Users Where u.ID = id Select u).FirstOrDefault Return user End Function Public Function GetUserByOpenID(ByVal openid As String) As User Implements IUserRepository.GetUserByOpenID Dim user = (From u In dc.Users Where u.OpenID = openid Select u).FirstOrDefault Return user End Function #End Region End Class End Namespace IUserService.vb Namespace Data Interface IUserService End Interface End Namespace UserService.vb Namespace Data Public Class UserService : Implements IUserService Private _ValidationDictionary As IValidationDictionary Private _repository As IUserRepository Public Sub New(ByVal validationDictionary As IValidationDictionary, ByVal repository As IUserRepository) _ValidationDictionary = validationDictionary _repository = repository End Sub Protected Function ValidateUser(ByVal UserToValidate As User) As Boolean Dim isValid As Boolean = True If UserToValidate.OpenID.Trim().Length = 0 Then _ValidationDictionary.AddError("OpenID", "OpenID is Required") isValid = False End If If UserToValidate.MemberSince = Nothing Then _ValidationDictionary.AddError("MemberSince", "MemberSince is Required") isValid = False End If If UserToValidate.LastSeen = Nothing Then _ValidationDictionary.AddError("LastSeen", "LastSeen is Required") isValid = False End If If UserToValidate.Reputation = Nothing Then _ValidationDictionary.AddError("Reputation", "Reputation is Required") isValid = False End If Return isValid End Function End Class End Namespace I have also wired up the IValidationDictionary.vb and the ModelStateWrapper.vb as described in the article above. What I'm having a problem with is actually implementing it in my controller. My controller looks something like this. Public Class UsersController : Inherits BaseController Private UserService As Data.IUserService Public Sub New() UserService = New Data.UserService(New Data.ModelStateWrapper(Me.ModelState), New Data.UserRepository) End Sub Public Sub New(ByVal service As Data.IUserService) UserService = service End Sub .... End Class however on the line that says Public Sub New(ByVal service As Data.IUserService) I'm getting an error 'service' cannot expose type 'Data.IUserService' outside the project through class 'UsersController' So my question is TWO PARTS How can I properly implement a Service Layer in my application using the concepts from that article? Should there be any content within my IUserService.vb?

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  • Zend_Form using subforms getValues() problem

    - by wiseguydigital
    Hi all, I am building a form in Zend Framework 1.9 using subforms as well as Zend_JQuery being enabled on those forms. The form itself is fine and all the error checking etc is working as normal. But the issue I am having is that when I'm trying to retrieve the values in my controller, I'm receiving just the form entry for the last subform e.g. My master form class (abbreviated for speed): Master_Form extends Zend_Form { public function init() { ZendX_JQuery::enableForm($this); $this->setAction('actioninhere') ... ->setAttrib('id', 'mainForm') $sub_one = new Form_One(); $sub_one->setDecorators(... in here I add the jQuery as per the docs); $this->addSubForm($sub_one, 'form-one'); $sub_two = new Form_Two(); $sub_two->setDecorators(... in here I add the jQuery as per the docs); $this->addSubForm($sub_two, 'form-two'); } } So that all works as it should in the display and when I submit without filling in the required values, the correct errors are returned. However, in my controller I have this: class My_Controller extends Zend_Controller_Action { public function createAction() { $request = $this->getRequest(); $form = new Master_Form(); if ($request->isPost()) { if ($form->isValid($request->getPost()) { // This is where I am having the problems print_r($form->getValues()); } } } } When I submit this and it gets past isValid(), the $form-getValues() is only returning the elements from the second subform, not the entire form.

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  • Getting ORACLE programming object definitions

    - by Yaakov Davis
    Let's say I have an ORACLE schema with contains a package. That package defines types, functions, procedures, etc: CREATE PACKAGE... DECLARE FUNCTION ... PROCEDURE ... END; Is there a query I can execute to get the definitions of those individual objects, without the wrapping package?

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  • Managing mandatory fields with triggers

    - by okkesemin
    I would like to set mandatory field backgrounds are red and others are green. So I try to implement below. But I could not set ValueConstraint Nullable property with trigger. Could you help please ? <Window x:Class="TriggerGirilmesigerekenalanlar.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:y="http://infragistics.com/Editors" Title="Window1" Height="300" Width="300"> <Window.Resources> <Style TargetType="{x:Type y:XamTextEditor}"> <Style.Triggers> <Trigger Property="ValueConstraint" Value="{x:Null}"> <Trigger.Setters> <Setter Property="Background" Value="green"></Setter> </Trigger.Setters> </Trigger> <Trigger Property="y:ValueConstraint.Nullable" Value="false"> <Trigger.Setters> <Setter Property="Background" Value="red"></Setter> </Trigger.Setters> </Trigger> </Style.Triggers> </Style> </Window.Resources> <StackPanel> <y:XamTextEditor> <y:XamTextEditor.ValueConstraint> <y:ValueConstraint Nullable="False" ></y:ValueConstraint> </y:XamTextEditor.ValueConstraint> </y:XamTextEditor> <y:XamTextEditor></y:XamTextEditor> </StackPanel> </Window>

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  • checking virtual sub domains

    - by Persian.
    I create a project that check the sub domain and redirect to the exist subdomain ( username ) but I can't find out why when the username is in database it can't show it . on local system it works finely .. but when I upload it on server it not works .. of course I change the commented place to uncomment for test .. but it's not working .. it shows this error : Object reference not set to an instance of an object. My code is this in page load : //Uri MyUrl = new Uri(Request.Url.ToString()); //string Url = MyUrl.Host.ToString(); Uri MyUrl = new Uri("http://Subdomain.Mydomain.com/"); string Url = MyUrl.Host.ToString(); string St1 = Url.Split('.')[0]; if ((St1.ToLower() == "Mydomain") || (St1.ToLower() == "Mydomain")) { Response.Redirect("Intro.aspx"); } else if (St1.ToLower() == "www") { string St2 = Url.Split('.')[1]; if ((St2.ToLower() == "Mydomain") || (St2.ToLower() == "Mydomain")) { Response.Redirect("Intro.aspx"); } else { object Blogger = ClsPublic.GetBlogger(St2); if (Blogger != null) { lblBloger.Text = Blogger.ToString(); if (Request.QueryString["id"] != null) { GvImage.DataSourceID = "SqlDataSourceImageId"; GvComments.DataSourceID = "SqlDataSourceCommentsId"; this.BindItemsList(); GetSubComments(); } else { SqlConnection scn = new SqlConnection(ClsPublic.GetConnectionString()); SqlCommand scm = new SqlCommand("SELECT TOP (1) fId FROM tblImages WHERE (fxAccepted = 1) AND (fBloging = 1) AND (fxSender = @fxSender) ORDER BY fId DESC", scn); scm.Parameters.AddWithValue("@fxSender", lblBloger.Text); scn.Open(); lblLastNo.Text = scm.ExecuteScalar().ToString(); scn.Close(); GvImage.DataSourceID = "SqlDataSourceLastImage"; GvComments.DataSourceID = "SqlDataSourceCommentsWId"; this.BindItemsList(); GetSubComments(); } if (Session["User"] != null) { MultiViewCommenting.ActiveViewIndex = 0; } else { MultiViewCommenting.ActiveViewIndex = 1; } } else { Response.Redirect("Intro.aspx"); } } } else { object Blogger = ClsPublic.GetBlogger(St1); if (Blogger != null) { lblBloger.Text = Blogger.ToString(); if (Request.QueryString["id"] != null) { GvImage.DataSourceID = "SqlDataSourceImageId"; GvComments.DataSourceID = "SqlDataSourceCommentsId"; this.BindItemsList(); GetSubComments(); } else { SqlConnection scn = new SqlConnection(ClsPublic.GetConnectionString()); SqlCommand scm = new SqlCommand("SELECT TOP (1) fId FROM tblImages WHERE (fxAccepted = 1) AND (fBloging = 1) AND (fxSender = @fxSender) ORDER BY fId DESC", scn); scm.Parameters.AddWithValue("@fxSender", lblBloger.Text); scn.Open(); lblLastNo.Text = scm.ExecuteScalar().ToString(); scn.Close(); GvImage.DataSourceID = "SqlDataSourceLastImage"; GvComments.DataSourceID = "SqlDataSourceCommentsWId"; this.BindItemsList(); GetSubComments(); } if (Session["User"] != null) { MultiViewCommenting.ActiveViewIndex = 0; } else { MultiViewCommenting.ActiveViewIndex = 1; } } else { Response.Redirect("Intro.aspx"); } } and my class : public static object GetBlogger(string User) { SqlConnection scn = new SqlConnection(ClsPublic.GetConnectionString()); SqlCommand scm = new SqlCommand("SELECT fUsername FROM tblMembers WHERE fUsername = @fUsername", scn); scm.Parameters.AddWithValue("@fUsername", User); scn.Open(); object Blogger = scm.ExecuteScalar(); if (Blogger != null) { SqlCommand sccm = new SqlCommand("SELECT COUNT(fId) AS Exp1 FROM tblImages WHERE (fxSender = @fxSender) AND (fxAccepted = 1)", scn); sccm.Parameters.AddWithValue("fxSender", Blogger); object HasQuty = sccm.ExecuteScalar(); scn.Close(); if (HasQuty != null) { int Count = Int32.Parse(HasQuty.ToString()); if (Count < 10) { Blogger = null; } } } return Blogger; } Which place if my code has problem ?

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  • In Drupal, can you control block display according to e.g. number of URL parts?

    - by james6848
    I'm having a little trouble controlling page-specific block display in Drupal... My URL's will be of this typical structure: http://www.mysite.co.uk/section-name/sub-page/sub-sub-page The 'section-name' will effectively be fixed, but there will be many sub-pages (far too many to explicitly reference). I need to somehow control block display as follows: One block will show on all pages where URL contains 'section-name/sub-page' but not on pages 'section-name/sub-page/sub-sub-page' Conversely, another block will show on all pages where URL contains 'section-name/sub-page/sub-sub-page' but not on pages 'section-name/sub-page' My only idea is to do a bit of PHP that looks for the string 'section-name' and then also counts URL parts (or even the number of slashes). Not sure how to implement that though :) Your help would be appreciated!

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  • filtering search results with php

    - by fl3x7
    Hello, Cant really find any useful information on this through Google so hope someone here with some knowledge can help. I have a set of results which are pulled from a multi dimensional array. Currently the array key is the price of a product whilst the item contains another array which contains all the product details. key=>Item(name=>test, foo=>bar) So currently when I list the items I just order by the key, smallest first and it lists the products smallest price first. However I want to build on this so that when a user sees the results they can choose other ordering options like list all products by a name, certain manufacturer, colour, x ,y ,z etc etc from a drop down box(or something similar) This is where I need some guidance. Im just not sure how to go about it or best practise or anything. The only way I can think of is to order all the items by the nested array eg by the name, manufacturer etc. but how do I do that in PHP? Hope you understand what im trying to achieve(if not just ask). Any help on this with ideas, approaches or examples would be great. Thanks for reading p.s Im using PHP5

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