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• Reading Excel spreadsheets with Delphi

  - by Bruce McGee

  I need to read from and write to Excel spreadsheets using Delphi 2010. Nothing fancy. Just reading and writing values from specific cells and ranges on different sheets. Needs to work without having Excel installed and support Excel 2007. Some things I've looked at: I've tried using ADO, which works OK for selecting everything in an entire sheet, but I haven't had much luck reading specific cells or ranges. NativeExcel looked promising, but it doesn't seem to be in active development, and they don't respond to e-mails. Axolot has a couple of products. The main product seems to be very functional, but is pricey. They have a lite version, but it doesn't support Delphi 2010. Any recommendations? Free would be great, but I'm open to a commercial solution as long as it's reliable and well supported.

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• Merging columns in a JTable

  - by Harish

  I am working in JTable and I have a requirement like this. Say There are 4 columns namely 10,20,30,40 Now the value usually comes like 10-20 20-30 and 30-40 So it was easy for us to display the name for this range. But recently the values have started to come randomly like 15-25 10-25,25-30 In this case our JTable should dynamically adjust the size of the row such that it represents that range only meaning it should not disturb the existing cells and only rows which diverge from the normal range. TO be more precise I should be able to merge and split cells based on the content of the cell.

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• Using PHP retrieved variables in Javascript

  - by mouthpiec

  Hi, I will use the following javascript to display a Google Map Window in a webpage. <script language = 'javascript'"> function initialize() { if (GBrowserIsCompatible()) { var map = new GMap2(document.getElementById("map_canvas")); map.setCenter(new GLatLng(35.904173, 14.433396), 16); map.setUIToDefault(); } } </script> I would like to read the coordinates from a db, to generate the map using PHP, but how is it possible to use the retrieved(eg $lat = xxx and $lon = yyy) values into the javascript?

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• URL Navigation and SQL Insertion After RadioButtonList Selection

  - by SidC

  Good Morning, I have a radiobuttonlist in my ASP.NET webforms application that is used as a voting tool. The concept is as follows: Users will vote for the blurb in the contentplaceholder using the radiobuttonlist. My list item values are 1 through 3 and my list item text is something like low, medium and high. Questions: 1. I want to save and accumulate votes for a given blurb. The blurb ID is referenced in a meta tag on the content page. How do I reference the meta tag in my SQL insert statement? 2. When the radiobuttonlist is used, can it cause the next content page to be loaded after the SQL insert is done? That is, I don't necessarily want the user to make the radiobuttonlist selection, then have to click a separate button to cast vote and move to next page. I want all that done in the radiobuttonlist. Is this possible? Thanks, Sid

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• LINQ query and lambda expressions

  - by user329269

  I'm trying to write a LINQ query and am having problems. I'm not sure if lambda expressions are the answer or not but I think they may be. I have two combo boxes on my form: "State" and "Color". I want to select Widgets from my database based on the values of these two dropdowns. My widgets can be in one of the following states: Not Started, In Production, In Finishing, In Inventory, Sold. Widgets can have any color in the 'color' table in the database. The 'state' combobox has selections "Not Sold," "In Production/Finishing", "Not Started," "In Production," "In Finishing," "In Inventory," "Sold." (I hope these are self-explanatory.) The 'color' dropdown has "All Colors," and a separate item for each color in the database. How can I create a LINQ query to select the widgets I want from the database based on the dropdowns?

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• C# Reset a property

  - by Jeff

  I'm writing a Clone function for a non serializeable object.For most objects I don't care if they are shallow copied as I won't be making any changes to them. I start with a MemberwiseClone and this copies all the values and few objects like configuration dictionary over just fine but they are pointers. EAVEntity newClone = (EAVEntity) this.MemberwiseClone(); newClone.EntityStorageID = Guid.NewGuid(); newClone.Controls.Clear(); So how do I reset a pointer so I can make them not point at the same location?

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• validate dynamically added textbox

  - by Hulk

  In the below code how to validate for null values for only the dynamically added text box i.e,r_score1,r_score2......... <script> function validate() { //How to validate the r_Score.. textfields } $(document).ready(function() { for(var i=0;i< sen.length;i++) { row += '<input type="text" name="r_score'+i+'" id="r_score'+r_count+'" size="8" />'; } $('#details').append(row); }); </script> <div id="details"><input type="text" name="score' id="score" size="8" /></div> <input type="button" value="Save" id="print" onclick="javascript:validate();" />

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• loops and array help

  - by dalton

  public void arrayCalculation(int[][]scores,float[]averages, int[]temp) { int total; for(int a=0; a<5; a++) { for (int b=0; b<5; b++) { scores[a][b] = temp[a+b*5]; } } for(int a = 0; a <5; a++) { total = total + scores[a]; } scores[5][0] = total; } i need to add up the values stored in the first row and store it in the 6th positon in the row

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• Object tree navigation language in Java

  - by lewap

  In the system which I'm currently developing I often have to navigate an object tree and based on its state and values take actions. In normal Java this results in tedious for loops, if statements etc... Are there alternative ways to achieve tree navigation, similar to XPath for XML? I know there is JXPath and OGNL, but do you know any other libraries for such purpose? Do you know any libraries which generate bytecodes for specific tree navigation expressions to make the processing as fast as Java native fors and ifs?

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• Event Tracking

  - by DRapp

  I want to understand event cycles. I have a form with a grid and textboxes. It has a grid, bound to DataTable, and textboxes bound to same table too. I'm trying to debug something and need to know how to identify ALL events fired in the form to see what may solve an issue for me. Anyhow, unless I explicitly subclass every class on my form, and override / attach to every event to my own event handlers, how can I get / listen to all events being fired during a certain action... Such as changing a "Selected" road in a DataGridView. It obviously updates its own "CurrentRow"... I need to know what / how to maybe FORCE a re-loading of SAME CurrentRow. Reason: during a form level "Edit Mode", and I change the content in another "Textbox" control, and reject changes, I need it to simulate the current "Record" is reloaded to go back to its original values.

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• postgresql weighted average?

  - by milovanderlinden

  say I have a postgresql table with the following values: id | value ---------- 1 | 4 2 | 8 3 | 100 4 | 5 5 | 7 If I use postgresql to calculate the average, it gives me an average of 24.8 because the high value of 100 has great impact on the calculation. While in fact I would like to find an average somewhere around 6 and eliminate the extreme(s). I am looking for a way to eliminate extremes and want to do this "statistically correct". The extreme's cannot be fixed. I cannot say; If a value is over X, it has to be eliminated. I have been bending my head on the postgresql aggregate functions but cannot put my finger on what is right for me to use. Any suggestions?

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• Java: versioned data structures?

  - by Jason S

  I have a data structure that is pretty simple (basically a structure containing some arrays and single values), but I need to record the history of the data structure so that I can efficiently get the contents of the data structure at any point in time. Is there a relatively straightforward way to do this? The best way I can think of would be to encapsulate the whole data structure with something that handles all the mutating operations by storing data in functional data structures, and then for each mutation operation caching a copy of the data structure in a Map indexed by time-ordering (e.g. a TreeMap with real time as keys, or a HashMap with a counter of mutation operations combined with one or more indexes stored in TreeMaps mapping real time / tick count / etc. to mutation operations) any suggestions?

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• Unobtrusive Client Validation without accepting model

  - by user1010609

  I have simple form like this which accepts only two values string action and editText.Is there a way to enable Unobtrusive Client Validation on this without Data Annotations? Or do I have to accept model and use Data Annotations? I just need it to make sure editText is atleast 5 chars long. @using (Ajax.BeginForm("Action", "Controller", null, new AjaxOptions { OnFailure = "error", UpdateTargetId = "Pcedit" + @Model.ID})) { <textarea rows="3" cols="2" name="editText" style="width:100%;"></textarea> <br /> <input type="submit" name="action" value="Save"/> <input type="submit" name="action" value="Cancel"/> }

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• Passing more than one argument in asp.net button in gridview

  - by MarceloRamires

  I have a TemplateField column in a gridview with a button inside of it. There is NO key value (surely that was not designed by me) , but in the other hand there aren't redundancies when comparing each single column, because they are events, and there is "starting date" and "ending date" of something that could not happen twice at the same time. I've already figured selecting with these values and all, but I just want the button to pass about five arguments to a given function. I've tested: <asp:Button CommandArgument='<%# Eval("day")%>' ID="Button2" runat="server" Text="Button" /> And it works properly, the day of the clicked row is passed, and could be retrieved through: e.CommandArgument.ToString(); in the GridView_RowCommand handler. How do I pass more than one argument? I've thought about concatenating with a separating character (wouldn't be that bad) but besides not knowing how to do it yet (didn't want to invest in a poor solution) I want a smarter one.

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• Display Img and Div inline - it's not rendered inline

  - by user359372

  In order to follow correct web standards, I've tried to layout image and div inline. In orde to achieve that - I've used display:inline property. But then I experienced the following issue: image renders from the center line, and div doesn't respect height parameter set to it. I've tried using line-height parameter, but that didn't give any useful results. I've also tried various combinations with setting margin/padding to some values or to auto, or replacing div with span, or wrapping img and div with additional divs. I've managed to achieve desired result by using position:absolute, but that doesn't help in cases where I want to use centered/relative positioning of the whole component... Any clues or ideas or troubleshooting hints? Please find the html example below: Test Page Some text that should be displayed in the center/middle of the div 123   Some text that should be displayed in the center/middle of the div

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• how escape quotes when inserting into database in PHP

  - by Mauro74

  Hi all, I'm quite new to PHP so sorry if sounds such an easy problem... :) I'm having an error message when inserting content which contains quotes into my db. here's what I tried trying to escape the quotes but didn't work: $con = mysql_connect("localhost","xxxx","xxxxx"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("test", $con); $nowdate = date('d-m-Y') $title = sprintf($_POST[title], mysql_real_escape_string($_POST[title])); $body = sprintf($_POST[body], mysql_real_escape_string($_POST[body])); $sql="INSERT INTO articles (title, body, date) VALUES ('$title','$body','$nowdate'),"; if (!mysql_query($sql,$con)) { die('Error: ' . mysql_error()); } header('Location: index.php'); Could you provide any solution please? Thanks in advance. Mauro

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• Floor function returning EXC_BAD_ACCESS

  - by fastrack20

  The cod that I am using contains these snippets of code. I am calling ThetaG_JD with the argument 2455343.50000 which is just a sample Julian date. Every time I run the program, I receive a EXC_BAD_ACCESS on the indicated line. When using gdb and printing out the intermediary values and passing them through the floor function, I get no error, but when Frac() is used it always returns an error. double Frac(double arg) { /* Returns fractional part of double argument */ return arg - floor(arg); } double ThetaG_JD(double jd) { /* Reference: The 1992 Astronomical Almanac, page B6. */ double UT=0, TU=0, GMST=0; //THIS LINE UT=Frac(jd+0.5); // THAT ONE ^^ jd=jd-UT; TU=(jd-2451545.0)/36525; GMST=24110.54841+TU*(8640184.812866+TU*(0.093104-TU*6.2E-6)); GMST=Modulus(GMST+secday*omega_E*UT,secday); return (twopi*GMST/secday); }

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• Different NSTimeZone names being returned

  - by Michael Waterfall

  I've noticed that on some devices the NSTimeZone's name method for a particular timezone can return different values. When testing the Brisbane time zone, my device returns @"Australia/Brisbane" whereas another user's device returns "Etc/GMT-10". Both iPhone's are running 3.1.2. The Date and Time Programming Guide for Cocoa states that: timeZoneWithName: The name passed to this method may be in any of the formats understood by the system, for example EST, Etc/GMT-2, America/Argentina/Buenos_Aires, Europe/Monaco, or US/Pacific, as shown in the following code fragment. I'd just like to know what could determine which value is used? The device? The language?

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• Efficient data structure for fast random access, search, insertion and deletion

  - by Leonel

  I'm looking for a data structure (or structures) that would allow me keep me an ordered list of integers, no duplicates, with indexes and values in the same range. I need four main operations to be efficient, in rough order of importance: taking the value from a given index finding the index of a given value inserting a value at a given index deleting a value at a given index Using an array I have 1 at O(1), but 2 is O(N) and insertion and deletions are expensive (O(N) as well, I believe). A Linked List has O(1) insertion and deletion (once you have the node), but 1 and 2 are O(N) thus negating the gains. I tried keeping two arrays a[index]=value and b[value]=index, which turn 1 and 2 into O(1) but turn 3 and 4 into even more costly operations. Is there a data structure better suited for this?

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• Insert xelements using LINQ Select?

  - by Simon Woods

  I have a source piece of xml into which I want to insert multiple elements which are created dependant upon certain values found in the original xml At present I have a sub which does this for me: <Extension()> Public Sub AddElements(ByVal xml As XElement, ByVal elementList As IEnumerable(Of XElement)) For Each e In elementList xml.Add(e) Next End Sub And this is getting invoked in a routine as follows: Dim myElement = New XElement("NewElements") myElement.AddElements( xml.Descendants("TheElements"). Where(Function(e) e.Attribute("FilterElement") IsNot Nothing). Select(Function(e) New XElement("NewElement", New XAttribute("Text", e.Attribute("FilterElement").Value)))) Is it possible to re-write this using Linq syntax so I don't need to call out to the Sub AddElements but could do it all in-line Many Thx Simon

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• Help with complex sql query

  - by eugeneK

  To make story short, i'm building self-learning banner management system. Users will be able to insert these banners to their site when banners will be shown based on sales/impressions ratio. I have 4 tables Banners bannerID int bannerImage varchar.... SmartBanners smartBannerID int smartBannerArrayID int bannerID int impressionsCount int visibility tinyint (percents) SmartBannerArrays smartBannerArrayID int userID int Statistics bannerID int saleAmountPerDay decimal... Each night i need to generate new "visibility" for each SmartBanner based on whole SmartBannerArray that same user has. So i need to get sum of impressions and sales for each bannerID in SmartBannerArray. All comes to my mind is to use double cursor, one will loop thought SmartBannerArrays get needed values for sum of impressions and sales and then inner loop which will access each SmartBanner and change it's "visibility" percentage based on (sales/impressions)/(sumOfSales/sumOfImpressions)*100 Hope you get the picture... Is there any other way to design better tables or not to use double cursor to avoid server overload ?

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• java updating text area

  - by n0ob

  for my application I have to build a little customized time ticker which ticks over after whatever delay I tell it to and writes the new value in my textArea. The problem is that the ticker is running fully until the termination time and then printing all the values. How can I make the text area change while the code is running. while(tick<terminationTime){ if ((System.currentTimeMillis()) > (msNow + delay)){ msNow = System.currentTimeMillis(); tick = tick + 1; currentTime.setText(""+tick); sourceTextArea.append(""+tick+" " + System.currentTimeMillis() +" \n"); } currentTime and sourceTextArea are both text areas and both are getting updated after the while loop ends.

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• How to get a flat, non-interpolated color when using vertex shaders.

  - by Brett

  Hi, Is there a way to achieve this? If I draw lines like this glShadeModel(GL_FLAT); glBegin(GL_LINES); glColor3f(1.0, 1.0, 0.0); glVertex3fv(bottomLeft); glVertex3fv(topRight); glColor3f(1.0, 0.0, 0.0); glVertex3fv(topRight); glVertex3fv(topLeft); . . (draw a square) . . glEnd(); I get the desired result (a different colour for each edge) but I want to be able to calculate the fragment values in a shader. If I do the same after setting up my shader program I always get interpolated colors between vertices. Is there a way around this? (would be even better if I could get the same results using quads) Thanks

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• get mouse position with respect to parent element

  - by ZX12R

  this is my setup <div id="uxcParent"> <div id="uxcClickable"></div> </div> now when a user clicks in the inner element i want the mouse position with respect to the parent div and not the page. this what i tried. var x= e.pageX- obj.offsetLeft; var x= e.pageY- obj.offsetTop; this works fine only when i don't scroll the page. I want the function to return the same values no matter where my elements are on the same page.

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• NLB and Host Header Value

  - by Hafeez

  Background: We are using MOSS 2007 in farm configuration, 2 WFE, 1 Indexer and SQL Server. MS NLB is used for load balancing. Host header value mapped to Virtual IP of Cluster in DNS, is used while creating the web applications in MOSS and all are sharing port 80. Problem: When client tries to access the web application that are configured with host header values. Both of WFEs Hangs for 5 minutes, they stop responding to ping and browser shows 'Page not found'. In the Application Log on the WFE, this error is registered "provider: TCP Provider, error: 0 - The semaphore timeout period has expired". Interestingly, the web application with no host header value and hosted on different ports is working correctly. Any clue to solve this problem will be helpful. Thks. Hafeez

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