Search Results

Search found 42781 results on 1712 pages for 'function calls'.

Page 333/1712 | < Previous Page | 329 330 331 332 333 334 335 336 337 338 339 340  | Next Page >

  • How to bind Data to Dropdownlist in Kendo Ui Mobile

    - by dinesh Haraveer
    I have been using Kendo Mobile to develop an application, previously same application i have done in Kendo web,it's works fine.The main problem is that i have to bind data to two dropdownlist which the below code i have written,when my application is running it show an error like "Microsoft JScript runtime error: Object doesn't support property or method 'append'". in HTML <div id="forms" data-role="view" data-title="Form Elements" data-init="initForm"> <table> <tr> <td> <label style="margin-left: 20px"> Company:</label> </td> <td> <select id="ddlCompany" style="width: 200px"> <option>Select Company</option> </select> </td> <td class="style1"> <label style="margin-left: 20px"> Category:</label> </td> <td> <select id="ddlCategory" style="width: 200px"> <option>Select Category</option> </select> </td> <td> <label style="margin-left: 20px"> Product :</label> </td> <td> <select id="ddlProduct" style="width: 200px"> <option>Select Product</option> </select> </td> </tr> </table> </div> function initForm() { $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "FlashReportMobileWebService.asmx/GetCompany", dataType: "json", success: function (data) { for (i = 0; i < data.d.length; i++) { ddlCompany.append($("<option></option>").val(data.d[i].Company).html(data.d[i].Company)); }; $("#ddlCompany").kendoDropDownList(); } }); $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "FlashReportMobileWebService.asmx/ToCategoryDropDown", dataType: "json", success: function (data) { for (i = 0; i < data.d.length; i++) { ddlCategory.append($("<option></option>").val(data.d[i].Category).html(data.d[i].Category)); }; $("#ddlCategory").kendoDropDownList(); }, failure: function (msg) { alert(msg); } }); } $("#ddlCategory").change( function (e) { var ddlProduct= $("#ddlProduct"); var dataItem = $("#ddlCategory").val(); $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", data: "{'Category':'" + dataItem + "'}", url: "FlashReportWebService.asmx/ToFillProductDropDown", dataType: "json", success: function (data) { ddlProduct.empty(); for (i = 0; i < data.d.length; i++) { ddlProduct.append($("<option></option>").val(data.d[i].ProductName).html(data.d[i].ProductName)); }; $("#ddlProduct").kendoDropDownList(); }, failure: function (msg) { alert(msg); } }); }); var app = new kendo.mobile.Application(document.body); thanks for reading this

    Read the article

  • Help me create a Firefox extension (Javascript XPCOM Component)

    - by Johnny Grass
    I've been looking at different tutorials and I know I'm close but I'm getting lost in implementation details because some of them are a little bit dated and a few things have changed since Firefox 3. I have already written the javascript for the firefox extension, now I need to make it into an XPCOM component. This is the functionality that I need: My Javascript file is simple, I have two functions startServer() and stopServer. I need to run startServer() when the browser starts and stopServer() when firefox quits. Edit: I've updated my code with a working solution (thanks to Neil). The following is in MyExtension/components/myextension.js. Components.utils.import("resource://gre/modules/XPCOMUtils.jsm"); const CI = Components.interfaces, CC = Components.classes, CR = Components.results; // class declaration function MyExtension() {} MyExtension.prototype = { classDescription: "My Firefox Extension", classID: Components.ID("{xxxx-xxxx-xxx-xxxxx}"), contractID: "@example.com/MyExtension;1", QueryInterface: XPCOMUtils.generateQI([CI.nsIObserver]), // add to category manager _xpcom_categories: [{ category: "profile-after-change" }], // start socket server startServer: function () { /* socket initialization code */ }, // stop socket server stopServer: function () { /* stop server */ }, observe: function(aSubject, aTopic, aData) { var obs = CC["@mozilla.org/observer-service;1"].getService(CI.nsIObserverService); switch (aTopic) { case "quit-application": this.stopServer(); obs.removeObserver(this, "quit-application"); break; case "profile-after-change": this.startServer(); obs.addObserver(this, "quit-application", false); break; default: throw Components.Exception("Unknown topic: " + aTopic); } } }; var components = [MyExtension]; function NSGetModule(compMgr, fileSpec) { return XPCOMUtils.generateModule(components); }

    Read the article

  • parsing css measures

    - by david
    When i write a jQuery plugin i like to specify options for spacings the CSS way. I wrote a function that returns a CSS String as values in a object. 5px 10px returns top: 5px, right: 10px, bottom: 5px, left: 10px Now i often use the returned values to do some calculations and its not very nice to have to extract the measuring unit every time... I suck in writing regular expressions could someone help me complete this function: this.cssMeasure = function(cssString, separateUnits){ if ( cssString ){ var values = {} }else{ return errorMsg } var spacing = cssString.split(' ') var errorMsg = 'please format your css values correctly dude' if( spacing[4] || (spacing[2] && !spacing[3]) ) { return errorMsg } else if ( spacing[3] ) { values = {top: spacing[0], right:spacing[1], bottom:spacing[2], left:spacing[3]} } else if ( spacing[1] ) { values = {top: spacing[0], right:spacing[1], bottom:spacing[0], left:spacing[1]} } else { values = {top: spacing[0], right:spacing[0], bottom:spacing[0], left:spacing[0]} } if (separateUnits) { $.each(values, function(i, value){ /* at this place i need to extract the measuring unit of each value and return them separately something like top: {value: 10, unit: 'px'}, right: {bla} and so on */ }) } return values } if you have any idea how to improve this function i am open to your comments.

    Read the article

  • scala currying by nested functions or by multiple parameter lists

    - by Morgan Creighton
    In Scala, I can define a function with two parameter lists. def myAdd(x :Int)(y :Int) = x + y This makes it easy to define a partially applied function. val plusFive = myAdd(5) _ But, I can accomplish something similar by defining and returning a nested function. def myOtherAdd(x :Int) = { def f(y :Int) = x + y f _ } Cosmetically, I've moved the underscore, but this still feels like currying. val otherPlusFive = myOtherAdd(5) What criteria should I use to prefer one approach over the other?

    Read the article

  • jcarousel, I need :active state on external controls

    - by TJ Sherrill
    I am running a Jcarousel and I want to add a.active to the current pagination option. I have seen other posts around about this same thing. /** * We use the initCallback callback * to assign functionality to the controls */ function mycarousel_initCallback(carousel) { jQuery('.jcarousel-control a').bind('click', function() { carousel.scroll(jQuery.jcarousel.intval(jQuery(this).text())); return false; }); jQuery('#mycarousel-next').bind('click', function() { carousel.next(); return false; }); jQuery('#mycarousel-prev').bind('click', function() { carousel.prev(); return false; }); }; // Ride the carousel... jQuery(document).ready(function() { jQuery("#mycarousel").jcarousel({ scroll: 1, initCallback: mycarousel_initCallback, // This tells jCarousel NOT to autobuild prev/next buttons buttonNextHTML: null, buttonPrevHTML: null }); }); </script> Thats the initialize code and the pagination lives inside: <ul class="jcarousel-control"> <% ([email protected]).each do |n| %> <li><a href="#"> <%= n %></a></li> <% end %> </ul> Its a rails app, so rails is creating the list based on the number of projects in the group. Any ideas? Seems like it should be pretty simple.. But I don't know js at all.

    Read the article

  • define javascript functions on iframe facebook app inside <fb:serverfbml> tag

    - by user233486
    Hi all, How we can define JS function on inside ? I tried to load file javascript on the end tag , but I still can't call the function from javascript file. Here the FBML tag <fb:serverfbml> <script type="text/fbml"> <fb:fbml> <a href="#" id="this" onclick="do_colors(this); return false">Hello World!</a> <script src="http://absolute.path.to/your/javascript/file.js"></script> </fb:fbml> </script> </fb:serverfbml> And here the javacript function on file.js function random_int(lo, hi) { return Math.floor((Math.random() * (hi - lo)) + lo) } function do_colors(obj) { var r = random_int(0, 255), b = random_int(0, 255), g = random_int(0, 255); obj.setStyle({background: 'rgb('+[r, g, b].join(',')+')', color: 'rgb('+[r<128?r+128:r-128, g<128?g+128:g-128, b<128?b+128:b-128].join(',')+')'}); } I use rails and facebooker to develop the application Any idea or suggestion for define javascript functions? Thanks,

    Read the article

  • c - strncpy issue

    - by Joe
    Hi there, I am getting segmentation fault when using strncpy and (pointer-to-struct)-(member) notation: I have simplified my code. I initialise a struct and set all of it's tokens to an empty string. Then a declare a pointer to a struct and assign the address of the struct to it. I pass the pointer to a function. I can print out the contents of the struct at the beginning of the function, but if I try to use the tp - mnemonic in a strncpy function, I get seg fault. Can anyone tell me what I am doing wrong? typedef struct tok { char* label; char* mnem; char* operand; }Tokens; Tokens* tokenise(Tokens* tp, char* line) { // This prints fine printf("Print this - %s\n", tp -> mnem); // This function gives me segmentation fault strncpy(tp -> mnem, line, 4); return tp; } int main() { char* line = "This is a line"; Tokens tokens; tokens.label = ""; tokens.mnem = "load"; tokens.operand = ""; Tokens* tp = &tokens; tp = tokenise(tp, line); return 0; } I have used printf statements to confirm that the code definitely stops executing at the strncpy function. Can anyone tell me where I am going wrong? Many thanks Joe

    Read the article

  • Regular expressions .net

    - by Tony
    I have the following function that I am using to remove the characters \04 and nulls from my xmlString but I can't find what do I need to change to avoid removing the \ from my ending tags. This is what I get when I run this function <ARR>20080625<ARR><DEP>20110606<DEP><PCIID>626783<PCIID><NOPAX>1<NOPAX><TG><TG><HASPREV>FALSE<HASPREV><HASSUCC>FALSE<HASSUCC> Can anybody help me find out what do I need to change in my expression to keep the ending tag as </tag> Private Function CleanInput(ByVal inputXML As String) As String ' Note - This will perform better if you compile the Regex and use a reference to it. ' That assumes it will still be memory-resident the next time it is invoked. ' Replace invalid characters with empty strings. Return Regex.Replace(inputXML, "[^><\w\.@-]", "") End Function

    Read the article

  • How to combine template partial specialization and template argument deduction

    - by KKKoo0
    My understanding is that template argument deduction is only for function templates, but function templates does not allow partial specialization. Is there a way to achieve both? I basically want to achieve a function-like object (can be a functor) with the signature template<class InputIterator1, class InputIterator2, class OutputIterator, int distribution> void GetQuantity(InputIterator1 frist1, InputIterator1 last1, InputIterator2 first2, OutputIterator result, double supply, double limit); Depending on the value of distribution, I want to have a couple of specializations of this template. And when I call this function,I basically do not want to specify all the type parameters, because they are many of them (and thus I need argument deduction)!

    Read the article

  • JavaScript For Loop in XSL document

    - by Nagendra
    Hello All, I have a peculiar problem with having a JavaScript for loop in XSL document. Here it goes:: I am calling a JavaScript function on the click of a CheckBox. Following is what I wanted to do in the javascript function :: function SeelctAll() { for(var cnt = 0; cnt < 100; cnt++) { //Business Logic here. } } For this I replaced < with < and tried. I got an error saying "Object Expected". I then enclosed the whole function inside Any help on this would be greatly appreciable.

    Read the article

  • Regular expression replace in PL/pgSQL

    - by dreamlax
    If I have the following input (excluding quotes): "The ancestral territorial imperatives of the trumpeter swan" How can I collapse all multiple spaces to a single space so that the input is transformed to: "The ancestral territorial imperatives of the trumpeter swan" This is going to be used in a trigger function on insert/update (which already trims leading/trailing spaces). Currently, it raises an exception if the input contains multiple adjacent spaces, but I would rather it simply transforms it into something valid before inserting. What is the best approach? I can't seem to find a regular-expression replace function for PL/pgSQL. There is a text_replace function, but this will only collapse at most two spaces down to one (meaning three consecutive spaces will collapse to two). Calling this function over and over is not ideal.

    Read the article

  • Javascript Array Scope - newbie here

    - by Gianluca
    So, I am learning Javascript while playing white Google Calendar APIs and I just can't figure how this piece of code is working this way: var entriesResult = []; var data = new Date(2010,3,22,17,0,0); var callback = function(result) { var entries = result.feed.getEntries(); if (entries.length != 0) { entriesResult = eventsManager(entries, 0, data); window.alert("inner entriesResult " + entriesResult.length); } } this.service.getEventsFeed(this.query, callback, handleGDError); window.alert("outer entriesResult " + entriesResult.length); eventsManager() is a function that returns an array of Objects. getEventsFeed() it's an API function: it queries the service and pass a "feed root" (a feed with selected items) to the callback function. Why the first alert (inner..) outputs a valid entriesResult.length while the second one (outer..) always outputs a 0? I tought javascript arrays are always passed by reference, what's wrong whit my code? Thank you :)

    Read the article

  • Jquery Toggle & passing data

    - by Ross
    I have created a toggle button with jquery but I need to pass my $id so it can execute the mysql in toggle_visibility.php. how do I pass my variable from my tag ? Yes $("a.toggleVisibility").toggle( function () { $(this).html("No"); }, function () { $.ajax({ type: "POST", url: "toggle_visibility.php", data: "id", success: function(msg){ alert( "Data Saved: " + msg ); } }); $(this).html("Yes"); } );

    Read the article

  • Setting a session variable in Global.asax causes AJAX errors

    - by Fly_Trap
    I'm getting a very peculiar problem with my asp.net application, it took me an age to track down but I still don't know what is causing this behaviour. If I set a session variable in the Application_PreRequestHandlerExecute event, then my external JavaScript files are ignored, and therfore causing a raft of errors. I have simplified the problem below. E.g. I have file called JScript.js containing the code: function myAlert() { alert("Hi World"); } And in my Default.aspx file I reference the js with the code: <script src="JScript.js" type="text/javascript"></script> And in the body onload event I call the myAlert() function: <body onload="myAlert()"> And finally in the Global.asax file: Private Sub Application_PreRequestHandlerExecute(ByVal sender As Object, ByVal e As EventArgs) HttpContext.Current.Session("myVar") = "MyValue" End Sub If you run the Default.aspx file you will see the js function isnt called, however, if you comment out the line of code Global.asax then the external js is called and the function executed when the page loads. Why is this?

    Read the article

  • Codeigniter Best Practices for Model functions

    - by user270797
    Say my application has a "Posts" model, and one of the function is add_post(), it might be something like: function add_post($data) { $this-db-insert('posts',$data); } Where $data is an array: $data = array ('datetime'='2010-10-10 01:11:11', 'title'='test','body'='testing'); Is this best practice? It means if you use that function you need to know the names of the database fields where as my understanding of OOP is that you shouldnt need to know how the method works etc etc

    Read the article

  • Lua Operator Overloading

    - by Pessimist
    I've found some places on the web saying that operators in Lua are overloadable but I can't seem to find any example. Can someone provide an example of, say, overloading the + operator to work like the .. operator works for string concatenation? EDIT 1: to Alexander Gladysh and RBerteig: If operator overloading only works when both operands are the same type and changing this behavior wouldn't be easy, then how come the following code works? (I don't mean any offense, I just started learning this language): printf = function(fmt, ...) io.write(string.format(fmt, ...)) end Set = {} Set.mt = {} -- metatable for sets function Set.new (t) local set = {} setmetatable(set, Set.mt) for _, l in ipairs(t) do set[l] = true end return set end function Set.union (a,b) -- THIS IS THE PART THAT MANAGES OPERATOR OVERLOADING WITH OPERANDS OF DIFFERENT TYPES -- if user built new set using: new_set = some_set + some_number if type(a) == "table" and type(b) == "number" then print("building set...") local mixedset = Set.new{} for k in pairs(a) do mixedset[k] = true end mixedset[b] = true return mixedset -- elseif user built new set using: new_set = some_number + some_set elseif type(b) == "table" and type(a) == "number" then print("building set...") local mixedset = Set.new{} for k in pairs(b) do mixedset[k] = true end mixedset[a] = true return mixedset end if getmetatable(a) ~= Set.mt or getmetatable(b) ~= Set.mt then error("attempt to 'add' a set with a non-set value that is also not a number", 2) end local res = Set.new{} for k in pairs(a) do res[k] = true end for k in pairs(b) do res[k] = true end return res end function Set.tostring (set) local s = "{" local sep = "" for e in pairs(set) do s = s .. sep .. e sep = ", " end return s .. "}" end function Set.print (s) print(Set.tostring(s)) end s1 = Set.new{10, 20, 30, 50} s2 = Set.new{30, 1} Set.mt.__add = Set.union -- now try to make a new set by unioning a set plus a number: s3 = s1 + 8 Set.print(s3) --> {1, 10, 20, 30, 50}

    Read the article

  • PHP and ajax no update taking place

    - by sea_1987
    Hi There, I have an an ajax request that looks like this, $('input.fakecheck').click(function(){ alert("deleteing...."); $.ajax({ url:"/search", type:"POST", data: $(this).attr('name')+"="+$(this).attr('value')+"&remove=Remove", success:function() { alert(data); } }) }) This calls a php function which looks like this, private function _remove_from_short_list($cv_array) { if (is_array($cv_array)) { $short_list = $this->session->userdata('short_list'); $new_list = array_diff_key($short_list, $cv_array); $this->session->set_userdata('short_list', $new_list); } } Essentiallty what happens is that on my page I have a list which is essentially a list of id's taken out of the session, the user can then by click and input(this will change) delete the id from their session. However once the deletion has taken place I want to be able to refresh the list to show that it has taken place, currently nothing happens, until I manually refresh.

    Read the article

  • Javascript break breaks Firefox

    - by Maxime
    Hi, I'm working on this Javascript script that works nice in Safari and Chome but for some reason it doesn't work at all in Firefox. I identified the line that caused this: it's "break;". How do I fix this? playListConfig( index ); $("#jquery_jplayer").jPlayer("play"); song_num = myPlayList[index].song_id; if(!o[song_num]) { o[song_num] = 1;} $.get("http://www.ratemysong.net/includes/getnote.php?song_id="+song_num+"&s"+Math.random(), function(data){ if(data == "") { $('#rating ul li a').each(function() { $(this).attr('href', '#'); $(this).css("color","#FFF"); }); $('#rating ul li a').click(function(e) { ++o[song_num]; if(o[song_num]==2) { $(this).css({color:'#59B'}); var url = "http://www.ratemysong.net/boxes/voted.php?note="; url = url + $(this).attr('id'); $.get(url, function(data){ $('#basic-modal-content').html(data); $("#basic-modal-content").modal(); }); rating[song_num] = $(this).attr('id'); } else { $("#already_voted").modal(); } break; }); } else { $('#rating ul li a').each(function() { $(this).removeAttr('href'); $(this).css("color","#000"); var id_value = $(this).attr("id"); $(this).css("color","#FFF"); if(id_value == data) { $(this).css("color","#59B"); } }); } }); }

    Read the article

  • jquery toggle, prevent clicking during toggle

    - by Stacey
    Given the following jquery code.. $('#toggle').toggle(function() { // perform something }, function() { // perform something else }); Is there any way to prevent the toggle from being fired again if someone clicks while it is performing the function? I referenced http://stackoverflow.com/questions/2489518/tell-jquery-to-ignore-clicks-during-an-animation-sequence and the technique did not work.

    Read the article

  • Jquery Fast image switching

    - by echedey lorenzo
    Hi, I have a php class that generates a map image depending on my db data. It is periodically updated thru a serInterval loop. I am trying to update it with no flickering but I just can't. I've tried different methods (preloader, imageswitcher) with no success. //first load function map() { $("#map").html("<img src=map.php?randval="+Math.random()+">"); } //update it from setInterval calls function updatemap() { $("#map").fadeOut(function() { $(this).load(function() { $(this).fadeIn(); }); $(this).attr("src", "map.php?randval="+Math.random()); }) } Is there any way to update the image with no flickering at all? I would prefer an inmediate swap insteado of a fade. The problem I'm having is that after calling updatemap() the image just dissapears. ¿Maybe it is a problem with the attribute src I am parsing? THanks for your help.

    Read the article

  • custom button: properties change, button should be redrawn

    - by Rutger
    Hi I'm developing an Android app. I have class derived from button to represent a special type of button. This special type has some properties (integers) and according to these one or more circles have to be drawn on top of the button. So I overrode the onDraw function, which looks the values up and accordingly draws the circles. But the class has a function to set new values for its properties. So new values are set but the changes are not reflected in the UI. It seems like the onDraw function is not called. When later I click the button or show a pop up message above my interface the onDraw function is called and the button is drawn correctly. So my question: when changing the properties how can I say that the button has to be redrawn? Thanks a lot!

    Read the article

  • PHP and jquery restrict direct access

    - by Sergio
    Is it possible to restrict direct access to PHP file if I use jquery .load function like this one: $(document).ready(function(){ $("#second").load("testip.php"); }); In this case I want to restrict direct access to file testip.php that will instert data in database. Can I do it using some PHP function that will compare visitors IP address and server IP at "testip.php" file or there is some better way to do it?

    Read the article

  • SQL Server SELECT stored procedure according to combobox.selectedvalue

    - by Jay
    In order to fill a datagridview according to the selectedvalue of a combobox I've tried creating a stored procedure. However, as I'm not 100% sure what I'm doing, depending on the WHERE statement at the end of my stored procedure, it either returns everything within the table or nothing at all. This is what's in my class: Public Function GetAankoopDetails(ByRef DisplayMember As String, ByRef ValueMember As String) As DataTable DisplayMember = "AankoopDetailsID" ValueMember = "AankoopDetailsID" If DS.Tables.Count > 0 Then DS.Tables.Remove(DT) End If DT = DAC.ExecuteDataTable(My.Resources.S_AankoopDetails, _Result, _ DAC.Parameter(Const_AankoopID, AankoopID), _ DAC.Parameter("@ReturnValue", 0)) DS.Tables.Add(DT) Return DT End Function Public Function GetAankoopDetails() As DataTable If DS.Tables.Count > 0 Then DS.Tables.Remove(DT) End If DT = DAC.ExecuteDataTable(My.Resources.S_AankoopDetails, _Result, _ DAC.Parameter(Const_AankoopID, AankoopID), _ DAC.Parameter("@ReturnValue", 0)) DS.Tables.Add(DT) Return DT End Function This is the function in the code behind the form I've written in order to fill the datagridview: Private Sub GridAankoopDetails_Fill() Try Me.Cursor = Cursors.WaitCursor dgvAankoopDetails.DataSource = Nothing _clsAankoopDetails.AankoopDetailsID = cboKeuze.SelectedValue dgvAankoopDetails.DataSource = _clsAankoopDetails.GetAankoopDetails Catch ex As Exception MessageBox.Show("An error occurred while trying to fill the data grid: " & ex.Message, "Oops!", MessageBoxButtons.OK) Finally Me.Cursor = Cursors.Default End Try End Sub And finally, this is my stored procedure: (do note that I'm not sure what I'm doing here) USE [Budget] GO /****** Object: StoredProcedure [dbo].[S_AankoopDetails] Script Date: 04/12/2010 03:10:52 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER PROCEDURE [dbo].[S_AankoopDetails] ( @AankoopID int, @ReturnValue int output ) AS declare @Value int set @Value =@@rowcount if @Value = 0 begin SELECT dbo.tblAankoopDetails.AankoopDetailsID, dbo.tblAankoopDetails.AankoopID, dbo.tblAankoopDetails.ArtikelID, dbo.tblAankoopDetails.Aantal, dbo.tblAankoopDetails.Prijs, dbo.tblAankoopDetails.Korting, dbo.tblAankoopDetails.SoortKorting, dbo.tblAankoopDetails.UitgavenDeelGroepID FROM dbo.tblAankoopDetails INNER JOIN dbo.tblAankoop ON dbo.tblAankoopDetails.AankoopID = dbo.tblAankoop.AankoopID INNER JOIN dbo.tblArtikel ON dbo.tblAankoopDetails.ArtikelID = dbo.tblArtikel.ArtikelID INNER JOIN dbo.tblUitgavenDeelGroep ON dbo.tblAankoopDetails.UitgavenDeelGroepID = dbo.tblUitgavenDeelGroep.UitgavenDeelGroepID WHERE dbo.tblAankoopDetails.Deleted = 0 and dbo.tblAankoopDetails.AankoopID = @AankoopID ORDER BY AankoopID if @@rowcount >0 begin set @ReturnValue=999 end else begin set @ReturnValue=997 end end if @Value >0 begin --Dit wil zeggen dat ik een gebruiker wil ingeven die reeds bestaat. (998) set @ReturnValue=998 end Does anyone know what I need to do to resolve this?

    Read the article

  • Managing lots of callback recursion in Nodejs

    - by Maciek
    In Nodejs, there are virtually no blocking I/O operations. This means that almost all nodejs IO code involves many callbacks. This applies to reading and writing to/from databases, files, processes, etc. A typical example of this is the following: var useFile = function(filename,callback){ posix.stat(filename).addCallback(function (stats) { posix.open(filename, process.O_RDONLY, 0666).addCallback(function (fd) { posix.read(fd, stats.size, 0).addCallback(function(contents){ callback(contents); }); }); }); }; ... useFile("test.data",function(data){ // use data.. }); I am anticipating writing code that will make many IO operations, so I expect to be writing many callbacks. I'm quite comfortable with using callbacks, but I'm worried about all the recursion. Am I in danger of running into too much recursion and blowing through a stack somewhere? If I make thousands of individual writes to my key-value store with thousands of callbacks, will my program eventually crash? Am I misunderstanding or underestimating the impact? If not, is there a way to get around this while still using Nodejs' callback coding style?

    Read the article

< Previous Page | 329 330 331 332 333 334 335 336 337 338 339 340  | Next Page >