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  • Swapping values using pointers

    - by xbonez
    I have this code fragment int i = 5; int k = 7; int * iPtr; int * jPtr; int * kPtr; iPtr = &i; kPtr = &k; I am required to swap i and k using the pointers. This is how I'm doing it: *jPtr = *kPtr ; *kPtr = *iPtr ; *iPtr = *jPtr ; Is this the best way to do it, or is there a better way?

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  • Method return values and exceptions

    - by dnagirl
    I have an interface called iIncident which defines a single method when(). when() should return a DateTime object. I'm trying to decide what to do if $object->when() has no DateTime to return as might be the case just after an object is instantiated and before all its properties are set. My choices are: return false throw some kind of Exception return some default DateTime like '9999-01-01' My inclination is to go with an Exception since $object really can't act as an incident until it knows when it occurred. I don't want to return a default DateTime because it complicates comparisons and it's not true. And I don't really want to return false because then I have to check for it every time I call the method- but if that is the preferred method, I guess I will. Is throwing an exception the best way? And is there a predefined exception type I should use (none of the SPL ones struck me as particularly appropriate- but that might just indicate my lack of experience)?

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  • Database Table design for Weekdays and Values

    - by Ved
    Guys, I would love to here your ideas on this. I am creating a table which will store weekly shift hours for employees. for example: Jon works 9:00am tp 9:00pm Monday , 10:00 AM to 5:00PM on Tuseday etc.... How should i go on designing this table. I thought of 2 options. (1) For every record I can have two lines for AM and PM and have columns for Monday to Sunday ID | ParentID | Type | Monday | Tuseday ......Sunday 1 | 1 | AM | 9:00 | 9:00 12:00 2 | 1 | PM | 9:00 | 5:00 02:00 3 | 2 | AM | 10:00 | 4 | 2 | PM | 10:00 | (2) I can save Preference in XML format in one column ID | Info 1 | |Hours|Monday|9:00 AM - 9:00PM|Monday|Tuseday........|Hours Any better ideas ? Thanks

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  • Deserialize array values to .NET properties using DataContractJsonSerializer

    - by James Cadd
    I'm working with the DataContractJsonSerializer in Silverlight 4 and would like to deserialize the following JSON: { "collectionname":"Books", "collectionitems": [ ["12345-67890",201, "Book One"], ["09876-54321",45, "Book Two"] ] } Into classes like the following: class BookCollection { public string collectionname { get; set; } public List<Book> collectionitems { get; set; } } class Book { public string Id { get; set; } public int NumberOfPages { get; set; } public string Title { get; set; } } What's the proper place to extend DataContractJsonSerializer to map the unnamed first array element in "collectionitems" to the Id property of the Book class, the second element to the NumberOfPages property and the final element to Title? I don't have control over the JSON generation in this instance and would like the solution to work with the Silverlight subset of .NET. It would be great if the solution could perform the reverse for serialization as well.

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  • Update access table rst with named cell values from excel

    - by uZI
    I have got a table in access that I loop through using a DAO recordset. For every recordset I take a bunch of data to an excel spreadsheet and run it through a model in excel. This produces a bunch of results in excel which are calculated in named cells. I want to be able to update the current recordset in access with these results but am having a tough time doing it. I have the following code code to create a DAO recordset code to move to first record code to parse data to excel code to run a bunch of stuff in excel including a goal seek to calculate results next I use the follwoing code without success With MyXL strSQL = "UPDATE ProductPricing SET Profit = " & .Names("Profit") & ";" End With Code to move to next record and loop until EOF any help is appreciated thanks

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  • Submtting data using $.ajax and retrieving values from $_POST array

    - by Linda Keating
    I'm having trouble retrieving my form Data that has been submitted via ajax like this: $( "form" ).on( "submit", function( event ) { var formData = $(this).serializeArray(); console.log("fomData"); $.ajax({ url: window.location.origin+ "/selfservicemanager/localtmfsetup/local_tmf_setup.php", type: "POST", data: JSON.stringify(formData), success : function (){ alert("success"); } }); }); I can see the data being sent over the network like this: But when I try to retrieve the data on the server side the $_POST array is empty. <?php var_dump($_POST); die(); ?> array (size=0) empty Any ideas? I've tried to stringify the data being sent, and also tried to decode the $_POST array but it expects a string.....

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  • Getting multiple values with scanf()

    - by Josh Curren
    I am using scanf() to get a set of ints from the user. But I would like the user to supply all 4 ints at once instead of 4 different promps. I know I can get one value by doing: scanf( "%i", &minx); But I would like the user to be able to do something like: Enter Four Ints: 123 234 345 456 Is it possible to do this?

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  • List view new line for new values

    - by Luke
    The following code produces a ListView with the names of the customers: private void displayDeliveries() { lstDeliveryDetails.Items.Clear(); foreach (Delivery d in mainForm.myDeliveries) { lstDeliveryDetails.Items.Add(d.DeliveryName); } } If I add, (d.DeliveryAddress), how can I get it to line up alongside the correct name?

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  • Excel - Counting unique values that meet multiple criteria

    - by wotaskd
    I'm trying to use a function to count the number of unique cells in a spreadsheet that, at the same time, meet multiple criteria. Given the following example: A B C QUANT STORE# PRODUCT 1 75012 banana 5 orange 6 56089 orange 3 89247 orange 7 45321 orange 2 apple 4 45321 apple In the example above, I need to know how many unique stores with a valid STORE# have received oranges OR apples. In the case above, the result should be 3 (stores 56089, 89247 and 45321). This is how I started to try solving the problem: =SUM(IF(FREQUENCY(B2:B9,B2:B9)>0,1)) The above formula will yield the number of unique stores with a valid store#, but not just the ones that have received oranges or bananas. How can I add that extra criteria?

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  • richfaces suggestionBox passing additional values to backing bean

    - by Martlark
    When using the rich faces suggestionBox how can you pass more than one id or value from the page with the text input to the suggestionBox backing bean. ie: to show a list of suggested cities within a selected state? Here is my autoComplete method. public List< Suburb > autocomplete(Object suggest) { String pref = (String) suggest; ArrayList< Suburb > result = new ArrayList< Suburb >(); Iterator< Suburb > iterator = getSuburbs().iterator(); while( iterator.hasNext() ) { Suburb elem = ((Suburb) iterator.next()); if( (elem.getName() != null && elem.getName().toLowerCase().indexOf( pref.toLowerCase() ) == 0) || "".equals( pref ) ) { result.add( elem ); } } return result; } As you can see there is one value passed from the page, Object suggest, which is the text of the h:inputText (in the faceLets m:textFormRow ) <m:textFormRow id="suburb" label="#{msgs.suburbPrompt}" property="#{bean[dto].addressDTO.suburb}" required="true" maxlength="100" size="30" /> <rich:suggestionbox height="200" width="200" usingSuggestObjects="true" suggestionAction="#{suburbsMBean.autocomplete}" var="suburb" for="suburb" fetchValue="#{suburb.name}" id="suggestion"> <h:column> <h:outputText value="#{suburb.name}" /> </h:column> </rich:suggestionbox> Earlier in the page you can select a state which I'd like to use to pare down the list of suburbs that the suggestion box displays.

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  • How to make a correct if-statement to filter out values from a xml-file

    - by Garreth 00
    Edit 3: As requested, I'm trying to simplify my question. Here is a sample of some of my data from a xml file: <entry> <title>Entry 1</title> <f:max_value_a>499 999</f:max_value_a> <f:max_value_b>999 999</f:max_value_b> <f:min_value_a>0</f:min_value_a> <f:min_value_b>500 000</f:min_value_b> <f:min_value_c>1 000 000</f:min_value_c> <f:value_for_a>5,10</f:value_for_a> <f:value_for_b>4,50</f:value_for_b> <f:value_for_c>3,90</f:value_for_c> </entry> <entry> <title>Entry 2</title> <f:min_value_a>0</f:min_value_a> <f:value_for_a>4,20</f:value_for_a> </entry> <entry> <title>Entry 3</title> <f:max_value_a>1 999 999</f:max_value_a> <f:min_value_a>100 000</f:min_value_a> <f:min_value_b>2 000 000</f:min_value_b> <f:value_for_a>3,735</f:value_for_a> <f:value_for_b>3,445</f:value_for_b> </entry> f:value_for_d is the highest value, and f:value_for_c is lower than d, and so on. I have a dynamic targetvalue (lets just go with 2 000 000 in this example) I want to get the value where max_value is greater than the targetvalue, but sometimes max_value is not defined and then set to "0". "0" in max_value should mean unlimited "roof". The min_value can not be greater than targetvalue, but sometimes min_value is not defined and then set to "0". "0" min_value should mean a unlimited "floor". I have tried with this code if ($value_for_d > 0 ){ if (($min_value_d <= $targetvalue) xor ($min_value_d == 0)){ if (($max_value_d >= $targetvalue) xor ($max_value_d == 0)){ $query_result = TRUE; $value = $value_for_d; } } }elseif ($value_for_c > 0 ){ if (($min_value_c <= $targetvalue) xor ($min_value_c == 0)){ if (($max_value_c >= $targetvalue) xor ($max_value_c == 0)){ $query_result = TRUE; $value = $value_for_c; } } }elseif ($value_for_b > 0 ){ if (($min_value_b <= $targetvalue) xor ($min_value_b == 0)){ if (($max_value_b >= $targetvalue) xor ($max_value_b == 0)){ $query_result = TRUE; $value = $value_for_b; } } }elseif ($value_for_a > 0 ){ if (($min_value_a <= $targetvalue) xor ($min_value_a == 0)){ if (($max_value_a >= $targetvalue) xor ($max_value_a == 0)){ $query_result = TRUE; $value = $value_for_a; } } } If I run this code with a targetvalue of "2 000 000", I get this result: Entry 1 - 3.9 (correct value is 3.9) Entry 2 - 0 (correct value is 4.2) Entry 3 - 3.445 (correct value is 3.445) If I set the targetvalue to even lower, to 500 000, I get 0 on all my entries.

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  • MySQL - get all unique values of a column, check if has a specific value

    - by gamers2000
    First off - apologies for the poor title, I have no idea how to describe it in a one-liner. I have a table - snippet is below. mysql> select * from playlistfiles; +-----------------------+--------------+-----------+ | FileName | PlaylistName | FileIndex | +-----------------------+--------------+-----------+ | File1 | Image1 | 0 | | File1 | Video1 | 2 | | File2 | Video1 | 0 | | File3 | Video1 | 1 | | File4 | Image1 | 1 | | File4 | Video1 | 3 | +-----------------------+--------------+-----------+ 6 rows in set (0.00 sec) What I need to do is to get all the FileNames and whether the file is in a playlist or not, as well as order them by FileIndex i.e. for the Image1 playlist, the output should be +-----------------------+------------+-----------+ | FileName | InPlaylist | FileIndex | +-----------------------+------------+-----------+ | File1 | 1 | 0 | | File2 | 0 | Null | | File3 | 0 | Null | | File4 | 1 | 1 | +-----------------------+------------+-----------+ and Video1 would be +-----------------------+------------+-----------+ | FileName | InPlaylist | FileIndex | +-----------------------+------------+-----------+ | File2 | 1 | 0 | | File3 | 1 | 1 | | File1 | 1 | 2 | | File4 | 1 | 3 | +-----------------------+------------+-----------+ In short, I need to be able to get all the unique FileNames from the table, and check if it is in a given table and if so, order it by FileIndex.

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  • Handling close-to-impossible collisions on should-be-unique values

    - by balpha
    There are many systems that depend on the uniqueness of some particular value. Anything that uses GUIDs comes to mind (eg. the Windows registry or other databases), but also things that create a hash from an object to identify it and thus need this hash to be unique. A hash table usually doesn't mind if two objects have the same hash because the hashing is just used to break down the objects into categories, so that on lookup, not all objects in the table, but only those objects in the same category (bucket) have to be compared for identity to the searched object. Other implementations however (seem to) depend on the uniqueness. My example (that's what lead me to asking this) is Mercurial's revision IDs. An entry on the Mercurial mailing list correctly states The odds of the changeset hash colliding by accident in your first billion commits is basically zero. But we will notice if it happens. And you'll get to be famous as the guy who broke SHA1 by accident. But even the tiniest probability doesn't mean impossible. Now, I don't want an explanation of why it's totally okay to rely on the uniqueness (this has been discussed here for example). This is very clear to me. Rather, I'd like to know (maybe by means of examples from your own work): Are there any best practices as to covering these improbable cases anyway? Should they be ignored, because it's more likely that particularly strong solar winds lead to faulty hard disk reads? Should they at least be tested for, if only to fail with a "I give up, you have done the impossible" message to the user? Or should even these cases get handled gracefully? For me, especially the following are interesting, although they are somewhat touchy-feely: If you don't handle these cases, what do you do against gut feelings that don't listen to probabilities? If you do handle them, how do you justify this work (to yourself and others), considering there are more probable cases you don't handle, like a supernonva?

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  • multiple return values from PHP with jQuery AJAX

    - by benhowdle89
    I'm using this jQuery code: $.ajax ({ type: "POST", url: "customerfilter.php", data: dataString, cache: false, success: function(html) { $(".custName").html(html); } }); How can i do something like this: $(".projDesc").html(html1); So i can split the returned results into two html elements? echo "<p>" .$row['cust_name']. "</p>"; thats the PHP i'm using and i want to echo another statement which i can put into another HTML element Does this make sense?

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  • Actionscript 3 E4X working with MMS values in XML

    - by user150946
    I am building an application using Action script 3 I am retrieving some XML from the web however the node names are mms:Image mms:Results etc my action script compiler is throwing an error becuase it is not expecting to see the semi colon in the node name. How to I access the nodes? thanks

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  • R: preventing unlist to drop NULL values

    - by nico
    I'm running into a strange problem. I have a vector of lists and I use unlist on them. Some of the elements in the vectors are NULL and unlist seems to be dropping them. How can I prevent this? Here's a simple (non) working example showing this unwanted feature of unlist a = c(list("p1"=2, "p2"=5), list("p1"=3, "p2"=4), list("p1"=NULL, "p2"=NULL), list("p1"=4, "p2"=5)) unlist(a) p1 p2 p1 p2 p1 p2 2 5 3 4 4 5

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  • Linq to SQL - Returning two values with one query

    - by Sir Psycho
    Hi, Is it possible to return a single value and an enumerable collection using LINQ to SQL? The problem is, I'm trying to do paging across a large recordset. I only want to return 10 rows at a time so I'm using .Skip(20).Take(10) approach. However I need to know the total number of records so I can show an appropriate page x of y. Trying to avoid two separate queries. Thanks

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  • Are all css font-weight property's values useful?

    - by jitendra
    font-weight:normal font-weight:bold font-weight:bolder font-weight:lighter font-weight:100 font-weight:200 font-weight:300 font-weight:400 font-weight:500 font-weight:600 font-weight:700 font-weight:800 font-weight:900 I've only used font-weight:bold and sometime font-weight:normal to override bold so far? What are usages of others?

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  • Sum values in a DataTable by a given criteria

    - by šljaker
    Which is the most effective way to sum data in the DataTable by a given criteria? I have the following table: KEY_1 KEY_2, VALUE_1, VALUE_2 Input: 01101, P, 2, 3 01101, F, 1, 1 01101, P, 4, 4 10102, F, 5, 7 Desired output (new DataTable): 01101, P, 6, 7 01101, F, 1, 1 01101, SUM, 7, 8 10102, F, 5, 7 10102, SUM, 5, 7 I need efficient algorithm, because I have 10k rows and 18 columns in a DataTable. Thank you.

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  • Saving JQuery Draggable Sitemap Values Correctly

    - by mdolon
    I am trying to implement Boagworld's Sitemap tutorial, however I am running into difficulty trying to correctly save the child/parent relationships. The HTML is as follows, however populated with other items as well: <input type="hidden" name="sitemap-order" id="sitemap-order" value="" /> <ul id=”sitemap”> <li id="1"> <dl> <dt><a href=”#”>expand/collapse</a> <a href=”#”>Page Title</a></dt> <dd>Text Page</dd> <dd>Published</dd> <dd><a href=”#”>delete</a></dd> </dl> <ul><!–child pages–></ul> </li> </ul> And here is the JQuery code: $('#sitemap li').prepend('<div class="dropzone"></div>'); $('#sitemap li').draggable({ handle: ' > dl', opacity: .8, addClasses: false, helper: 'clone', zIndex: 100 }); var order = ""; $('#sitemap dl, #sitemap .dropzone').droppable({ accept: '#sitemap li', tolerance: 'pointer', drop: function(e, ui) { var li = $(this).parent(); var child = !$(this).hasClass('dropzone'); //If this is our first child, we'll need a ul to drop into. if (child && li.children('ul').length == 0) { li.append('<ul/>'); } //ui.draggable is our reference to the item that's been dragged. if (child) { li.children('ul').append(ui.draggable); }else { li.before(ui.draggable); } //reset our background colours. li.find('dl,.dropzone').css({ backgroundColor: '', backgroundColor: '' }); li.find('.dropzone').css({ height: '8px', margin: '0' }); // THE PROBLEM: var parentid = $(this).parent().attr('id'); menuorder += ui.draggable.attr('id')+'=>'+parentid+','; $("#sitemap-order").val(order); }, over: function() { $(this).filter('dl').css({ backgroundColor: '#ccc' }); $(this).filter('.dropzone').css({ backgroundColor: '#aaa', height: '30px', margin: '5px 0'}); }, out: function() { $(this).filter('dl').css({ backgroundColor: '' }); $(this).filter('.dropzone').css({ backgroundColor: '', height: '8px', margin: '0' }); } }); When moving items into the top-level (without parents), the parentid value I get is of the first list item (the parent container), so I can never remove the parent value and have a top-level item. Is there a no-brainer answer that I'm just not seeing right now? Any help is appreciated.

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