Search Results

Search found 46878 results on 1876 pages for 'function location'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 268/1876 | < Previous Page | 264 265 266 267 268 269 270 271 272 273 274 275  | Next Page >

  • Loading the preview function of AUCTeX 11.86 on macports Emacs-app 23.2.1 port.

    - by Sarah
    I've installed Emacs-app 23.2.1 via MacPorts and I'm trying to install AUCTeX 11.86 so that it will work on this installation. I've run the following configure line for AUCTeX and that seems to work. ./configure --with-emacs=/Applications/MacPorts/Emacs.app/Contents/MacOS/Emacs --with-lispdir=/Applications/MacPorts/Emacs.app/Contents/Resources/site-lisp/ --with-texmf-dir=/usr/local/texlive/2010basic/texmf-local/ make and make install seem to work, and I've added the following line to my init.el (require 'tex-site) as per the installation instructions. However, when I open a TeX file, the Preview menu does not show up (although the LaTeX menu does.) The following are some of my tests: M-x load-library RET preview-latex RET doesn't seem to do anything. M-x load-library RET preview RET brings up the Preview menu. Is it safe to somehow add the load-library preview to my init.el? Or do I risk mucking up something? I'm new to Emacs and primarily trying to learn it because of the AUCTeX preview features, but I don't feel very safe in this environment yet.

    Read the article

  • is_admin? function in rails? - undefined method Error

    - by Newbie
    Hello! At the moment, I am creating some kind of admin panel/backend for my site. I want to do the following: Only admins (a user has a user_role(integer) -- 1 = admin, 2 = moderator, 3 = user) can see and access a link for the admin panel. So I created an admin_controller. In my admin controller I created a new function called is_admin?: class AdminController < ApplicationController def admin_panel end def is_admin? current_user.user_role == 1 end end my route looks like. map.admin_panel '/admin-panel', :controller => 'admin', :action => 'admin_panel' and in my _sidebar.html.erb (partial in applicaton.html.erb) I created the link: <%= link_to "Admin Panel", :admin_panel unless is_admin? %> Now I get an error called: undefined method `is_admin?' Where is the problem? Please help me solving this problem!

    Read the article

  • How to pass a class method as an argument for another function in C++ and openGL?

    - by tsubasa
    I know this thing works: void myDisplay() { ... } int main() { ... glutDisplayFunc(myDisplay) ... } so I tried to include myDisplay() function to a class that I made. Because I want to overload it in the future with a different class. However, the compiler complains that argument of type 'void (ClassBlah::)()' does not match 'void(*)()' . Here is the what I try to make: class ClassBlah { .... void myDisplay() .... } ...... int main() { ... ClassBlah blah glutDisplayFunc(blah.myDisplay) ... } Does anybody knows how to fix this problem? Many thanks.

    Read the article

  • Mediawiki authenication replacement showing "Login Required" instead of signing user into wiki

    - by arcdegree
    I'm fairly to MediaWiki and needed a way to automatically log users in after they authenticated to a central server (which creates a session and cookie for applications to use). I wrote a custom authentication extension based off of the LDAP Authentication extension and a few others. The extension simply needs to read some session data to create or update a user and then log them in automatically. All the authentication is handled externally. A user would not be able to even access the wiki website without logging in externally. This extension was placed into production which replaced the old standard MediaWiki authentication system. I also merged user accounts to prepare for the change. By default, a user must be logged in to view, edit, or otherwise do anything in the wiki. My problem is that I found if a user had previously used the built-in MediaWiki authentication system and returned to the wiki, my extension would attempt to auto-login the user, however, they would see a "Login Required" page instead of the page they requested like they were an anonymous user. If the user then refreshed the page, they would be able to navigate, edit, etc. From what I can tell, this issue resolves itself after the UserID cookie is reset or created fresh (but has been known to strangely come up sometimes). To replicate, if there is an older User ID in the "USERID" cookie, the user is shown the "Login Required" page which is a poor user experience. Another way of showing this page is by removing the user account from the database and refreshing the wiki page. As a result, the user will again see the "Login Required" page. Does anyone know how I can use debugging to find out why MediaWiki thinks the user is not signed in when the cookies are set properly and all it takes is a page refresh? Here is my extension (simplified a little for this post): <?php $wgExtensionCredits['parserhook'][] = array ( 'name' => 'MyExtension', 'author' => '', ); if (!class_exists('AuthPlugin')) { require_once ( 'AuthPlugin.php' ); } class MyExtensionPlugin extends AuthPlugin { function userExists($username) { return true; } function authenticate($username, $password) { $id = $_SESSION['id']; if($username = $id) { return true; } else { return false; } } function updateUser(& $user) { $name = $user->getName(); $user->load(); $user->mPassword = ''; $user->mNewpassword = ''; $user->mNewpassTime = null; $user->setRealName($_SESSION['name']); $user->setEmail($_SESSION['email']); $user->mEmailAuthenticated = wfTimestampNow(); $user->saveSettings(); return true; } function modifyUITemplate(& $template) { $template->set('useemail', false); $template->set('remember', false); $template->set('create', false); $template->set('domain', false); $template->set('usedomain', false); } function autoCreate() { return true; } function disallowPrefsEditByUser() { return array ( 'wpRealName' => true, 'wpUserEmail' => true, 'wpNick' => true ); } function allowPasswordChange() { return false; } function setPassword( $user, $password ) { return false; } function strict() { return true; } function initUser( & $user ) { } function updateExternalDB( $user ) { return false; } function canCreateAccounts() { return false; } function addUser( $user, $password ) { return false; } function getCanonicalName( $username ) { return $username; } } function SetupAuthMyExtension() { global $wgHooks; global $wgAuth; $wgHooks['UserLoadFromSession'][] = 'Auth_MyExtension_autologin_hook'; $wgHooks['UserLogoutComplete'][] = 'Auth_MyExtension_UserLogoutComplete'; $wgHooks['PersonalUrls'][] = 'Auth_MyExtension_personalURL_hook'; $wgAuth = new MyExtensionPlugin(); } function Auth_MyExtension_autologin_hook($user, &$return_user ) { global $wgUser; global $wgAuth; global $wgContLang; wfSetupSession(); // Give us a user, see if we're around $tmpuser = new User() ; $rc = $tmpuser->newFromSession(); $rc = $tmpuser->load(); if( $rc && $rc->isLoggedIn() ) { if ( $rc->authenticate($rc->getName(), '') ) { return true; } else { $rc->logout(); } } $id = trim($_SESSION['id']); $name = ucfirst(trim($_SESSION['name'])); if (empty($dsid)) { $result = false; // Deny access return true; } $user = User::newFromName($dsid); if (0 == $user->getID() ) { // we have a new user to add... $user->setName( $id); $user->addToDatabase(); $user->setToken(); $user->saveSettings(); $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 ); $ssUpdate->doUpdate(); } else { $user->saveToCache(); } // update email, real name, etc. $wgAuth->updateUser( $user ); $result = true; // Go ahead and log 'em in $user->setToken(); $user->saveSettings(); $user->setupSession(); $user->setCookies(); return true; } function Auth_MyExtension_personalURL_hook(& $personal_urls, & $title) { global $wgUser; unset( $personal_urls['mytalk'] ); unset($personal_urls['Userlogin']); $personal_urls['userpage']['text'] = $wgUser->getRealName(); foreach (array('login', 'anonlogin') as $k) { if (array_key_exists($k, $personal_urls)) { unset($personal_urls[$k]); } } return true; } function Auth_MyExtension_UserLogoutComplete(&$user, &$inject_html, $old_name) { setcookie( $GLOBALS['wgCookiePrefix'] . '_session', '', time() - 3600, $GLOBALS['wgCookiePath']); setcookie( $GLOBALS['wgCookiePrefix'] . 'UserName', '', time() - 3600, $GLOBALS['wgCookiePath']); setcookie( $GLOBALS['wgCookiePrefix'] . 'UserID', '', time() - 3600, $GLOBALS['wgCookiePath']); setcookie( $GLOBALS['wgCookiePrefix'] . 'Token', '', time() - 3600, $GLOBALS['wgCookiePath']); return true; } ?> Here is part of my LocalSettings.php file: ############################# # Disallow Anonymous Access ############################# $wgGroupPermissions['*']['read'] = false; $wgGroupPermissions['*']['edit'] = false; $wgGroupPermissions['*']['createpage'] = false; $wgGroupPermissions['*']['createtalk'] = false; $wgGroupPermissions['*']['createaccount'] = false; $wgShowIPinHeader = false; # For non-logged in users ############################# # Extension: MyExtension ############################# require_once("$IP/extensions/MyExtension.php"); $wgAutoLogin = true; SetupAuthMyExtension(); $wgDisableCookieCheck = true;

    Read the article

  • Is it possible to come over the time out issue for a function call in C#?

    - by infant programmer
    In my program I call a method xslTransform.Load(strXmlQueryTransformPath, xslSettings, new XmlUrlResolver()); The problem I am facing is: sometimes this function doesn't execute well within the time. Sometimes compiler raises the time out issue after a long time of trial.. which inturn causes this part of application to shut. That is what I want to avoid. So if it exceeds certain time say 10 seconds I need to recall the method. Is it possible to add some code lines adjacent to this, which can meet the requirement?

    Read the article

  • Does iPhone SDK Objective C support functions inside of functions?

    - by Moshe
    I know that javascript, for example supports functions inside of functions, like so: function doSomething(){ function doAnothingThing(){ //this function is redefined every time doSomething() is called and only exists inside doSomething() } //you can also stick it inside of conditions if(yes){ function doSomethingElse(){ //this function only exists if yes is true } } } Does objective-c support this? Theoretical example: -(void) doSomething:(id) sender{ -(void) respondToEvent: (id) sender{ //theoretically? ... please? } } BONUS: What is the proper term for a "local" function?

    Read the article

  • What does this PHP (function/construct?) do, and where can I find more documentation on it?

    - by Rob
    Simple question. Here is this code. $r = rand(0,1); $c = ($r==0)? rand(65,90) : rand(97,122); $inputpass .= chr($c); I understand what it does in the end result, but I'd like a better explanation on how it works, so I can use it myself. Sorry if this is a bad question. If you're unsure of what I'm asking about, its the (function?) used here: $c = ($r==0)? rand(65,90) : rand(97,122);

    Read the article

  • VB.Net Linq Datatable Exists

    - by LarsH
    I would like to use Linq instead of below function : Friend Function IsCollectionInTable2(ByVal apps As DataTable, ByVal collectionId As String) As Boolean For Each row As DataRow In apps.Rows If row("CollectionId").ToString = collectionId Then Return True Next Return False End Function The best I can do is below: Friend Function IsCollectionInTable(ByVal apps As DataTable, ByVal collectionId As String) As Boolean Return (From row In apps.AsEnumerable() Where (row.Field(Of String)("CollectionId") = collectionId) Select row.Field(Of String)("CollectionId")).Count > 0 End Function I would like to use Exists or Any in above function. Performance could be an issue,

    Read the article

  • Best database (mysql) structure for this case:

    - by robert
    we have three types of data (tables): Book (id,name,author...) ( about 3 million of rows) Category (id,name) ( about 2000 rows) Location (id,name) ( about 10000 rows) A Book must have at least 1 type of Category (up to 3) AND a Book must have only one Location. I need to correlate this data to get this query faster: Select Books where Category = 'cat_id' AND Location = 'loc_id' Select Books where match(name) against ('name of book') AND Location = 'loc_id' Please I need some help. Thanks

    Read the article

  • Can the lock function be used to implement thread-safe enumeration?

    - by Daniel
    I'm working on a thread-safe collection that uses Dictionary as a backing store. In C# you can do the following: private IEnumerable<KeyValuePair<K, V>> Enumerate() { if (_synchronize) { lock (_locker) { foreach (var entry in _dict) yield return entry; } } else { foreach (var entry in _dict) yield return entry; } } The only way I've found to do this in F# is using Monitor, e.g.: let enumerate() = if synchronize then seq { System.Threading.Monitor.Enter(locker) try for entry in dict -> entry finally System.Threading.Monitor.Exit(locker) } else seq { for entry in dict -> entry } Can this be done using the lock function? Or, is there a better way to do this in general? I don't think returning a copy of the collection for iteration will work because I need absolute synchronization.

    Read the article

  • Intercepting mouse events using a global hook. Stop an action from happening.

    - by fMinkel
    I'm attempting to intercept and interrupt mouse events. Lets say I wanted to disable the right mouse button down event, or even the mouse move event. I haven't been able to figure out the interrupting part. I am using the (I assume pretty widely used) following code for Global Hooking of the mouse. Private Structure MSLLHOOKSTRUCT Public pt As Point Public mouseData As Int32 Public flags As Int32 Public time As Int32 Public extra As IntPtr End Structure Private _mouseHook As IntPtr Private Const WH_MOUSE_LL As Int32 = 14 Private Delegate Function MouseHookDelegate(ByVal nCode As Int32, ByVal wParam As IntPtr, ByRef lParam As MSLLHOOKSTRUCT) As Int32 <MarshalAs(UnmanagedType.FunctionPtr)> Private _mouseProc As MouseHookDelegate Private Declare Function SetWindowsHookExW Lib "user32.dll" (ByVal idHook As Int32, ByVal HookProc As MouseHookDelegate, ByVal hInstance As IntPtr, ByVal wParam As Int32) As IntPtr Private Declare Function UnhookWindowsHookEx Lib "user32.dll" (ByVal hook As IntPtr) As Boolean Private Declare Function CallNextHookEx Lib "user32.dll" (ByVal idHook As Int32, ByVal nCode As Int32, ByVal wParam As IntPtr, ByRef lParam As MSLLHOOKSTRUCT) As Int32 Private Declare Function GetCurrentThreadId Lib "kernel32.dll" () As Integer Private Declare Function GetModuleHandleW Lib "kernel32.dll" (ByVal fakezero As IntPtr) As IntPtr Public Function HookMouse() As Boolean Debug.Print("Mouse Hooked") If _mouseHook = IntPtr.Zero Then _mouseProc = New MouseHookDelegate(AddressOf MouseHookProc) _mouseHook = SetWindowsHookExW(WH_MOUSE_LL, _mouseProc, GetModuleHandleW(IntPtr.Zero), 0) End If Return _mouseHook <> IntPtr.Zero End Function Public Sub UnHookMouse() Debug.Print("Mouse UnHooked") If _mouseHook = IntPtr.Zero Then Return UnhookWindowsHookEx(_mouseHook) _mouseHook = IntPtr.Zero End Sub Private Function MouseHookProc(ByVal nCode As Int32, ByVal wParam As IntPtr, ByRef lParam As MSLLHOOKSTRUCT) As Int32 'Debug.Print("Message = {0}, x={1}, y={2}", wParam.ToInt32, lParam.pt.X, lParam.pt.Y) If wParam.ToInt32 = 513 Then '''interrupt the left mouse button event here, but don't know what to return to do so. End If Return CallNextHookEx(WH_MOUSE_LL, nCode, wParam, lParam) End Function

    Read the article

  • What does the C++ compiler error "looks like a function definition, but there is no parameter list;"

    - by SkyBoxer
    #include <iostream> #include <fstream> using namespace std; int main { int num1, num2; ifstream infile; ostream outfile; infile.open("input.dat"); outfile.open("output.dat"); infile >> num 1 >> num 2; outfile << "Sum = " << num1 + num2 << endl; infile.close() outfile.close() return 0; } This is what I did and when I compile it, I got this error that said error C2470: 'main' : looks like a function definition, but there is no parameter list; skipping apparent body Please don't hate me :( I am new at this computer science....

    Read the article

  • Is the following combination of components valid to function as a desktop computer? [closed]

    - by Gideon Potgieter
    Could someone with more PC building experience than me tell me whether these PC components can cooperate fully as a self-made PC? Processor: Intel Core i5-3570K Video card: Asus Radeon HD 7870 Motherboard: Gigabyte GA-Z77-D3H RAM: Corsair CMZ16GX3M2A1600C10 Vengeance 16GB 1600MHz CL10 DDR3 (x2) Storage: Western Digital WD1002FAEX (x2) Display: Samsung S24B300HL Sound: Logitech X140 Chassis: Thermaltake V4 Black Edition VM30001W2Z Power supply: Seagate OEM 500W Builder PSU Optical drive: Asus DRW-24B1ST Thanks in advance! (btw, I know 32 GB RAM is unnecessary, but I want to buy it to use as a reserve)

    Read the article

  • What is the function of those film covers on electronic equipment such as mobile screens but also peripheral plastics on a laptop?

    - by leladax
    I understand it may "protect" an area but I don't get why the customer gets it and then takes it off after it was being protected in a full box anyway. Also, should those film covers that surround the plastics around a laptop screen (and not the screen itself) and maybe also on the keyboard be kept on as much as possible? I noticed if one tries to keep them on as much as possible they tend to go off by themselves anyway, but anyway, what's the status quo about it?

    Read the article

  • how to get data from another file?

    - by Ronnie Chester Lynwood
    hey guys i got this jquery codes: jQuery(function ($) { var OSX = { container: null, init: function () { $("input.osx, a.osx").click(function (e) { e.preventDefault(); $("#osx-modal-content").modal({ overlayId: 'osx-overlay', containerId: 'osx-container', closeHTML: null, minHeight: 80, opacity: 65, position: ['0',], overlayClose: true, onOpen: OSX.open, onClose: OSX.close }); }); }, open: function (d) { var self = this; self.container = d.container[0]; d.overlay.fadeIn('slow', function () { $("#osx-modal-content", self.container).show(); var title = $("#osx-modal-title", self.container); title.show(); d.container.slideDown('slow', function () { setTimeout(function () { var h = $("#osx-modal-data", self.container).height() + title.height() + 20; // padding d.container.animate( {height: h}, 200, function () { $("div.close", self.container).show(); $("#osx-modal-data", self.container).show(); } ); }, 300); }); }) }, close: function (d) { var self = this; // this = SimpleModal object d.container.animate( {top:"-" + (d.container.height() + 20)}, 500, function () { self.close(); // or $.modal.close(); } ); } }; OSX.init(); }); this js is gets #osx-modal-content,#osx-modal-title,#osx-modal-data from index.php. how can i get divs from another page? thanks

    Read the article

  • WHY JSLint complains: "someFunction() was used before it was defined"?

    - by 7hi4g0
    Searching for the JSLint error "was used before it was defined" i've found these: JSLint: Using a function before it's defined error Function was used before it was defined - JSLint JSLint: was used before it was defined jsLint error: “somefunction() was used before it was defined” jslint - Should we tolerate misordered definitions? Problem None of those answers WHY the error is shown. Elaboration According to the ECMA-262 Specification functions are evaluated before execution starts, hence all functions declared using the function keyword are available to all the code idenpendent of the place they were declared (assuming they are acessible on that scope). This is otherwise known as hoisting. Douglas Crockford seems to think it is better to declare every function before the code that uses it regardless of the hoisting effect. According to StackOverflowNewbie in his question, this raises some code organization problems. Not to mention some people, like me, prefer to declare their functions underneath the main/init code. On those questions there are some ways to avoid or fix the error, such as using function expressions vs function declarations. But none of them showed me the reason of the error. Not even Crockford's site. Question(s) Why is it an error to call a function before the declaration, even if it was declared using the function keyword? Is it better to use function expressions instead of function declaration in the JSLint context? If one is preferred, why? Note Not looking for answers like: Crockford is a tyrant Is just Crockford's opinion Thank you :*

    Read the article

  • Trying to simplify some Javascript with closures

    - by mvalente
    Hi, I'm trying to simplify some JS code that uses closures but I am getting nowhere (probably because I'm not grokking closures) I have some code that looks like this: var server = http.createServer(function (request, response) { var httpmethods = { "GET": function() { alert('GET') }, "PUT": function() { alert('PUT') } }; }); And I'm trying to simplify it in this way: var server = http.createServer(function (request, response) { var httpmethods = { "GET": function() { alertGET() }, "PUT": function() { alertPUT() } }; }); function alertGET() { alert('GET'); } function alertPUT() { alert('PUT'); } Unfortunately that doesnt seem to work... Thus: - what am I doing wrong? - is it possible to do this? - how? TIA -- MV

    Read the article

  • ssh, "Last Login", `last` and OS X

    - by allentown
    I have hit the googles as much as I can on this, being specific to OS X, I am not finding an answer. Nothing is wrong, but curiosity levels are high. $ssh [email protected] Password: Last login: Wed Apr 7 21:28:03 2010 from my-laptop.local ^lonely tylenol^ Line 1 is my command line 2 is the shell asking for the password line 3 is where my question comes from line 4 comes out of /etc/motd I can find nothing in ~/ of an of the .bash* files that contains the string "Last Login", and would like to alter it. It performs some type of hostname lookup, which I can not determine. If I ssh to another host: $ssh [email protected] Last login: Wed Apr 7 21:14:51 2010 from 123-234-321-123-some.cal.isp.net.example hi there, you are on box 456 line 1 is my command line 2 is again, where my question comes from line 3 is from /etc/motd *The dash'd IP address is not reversed On this remote host, I have ~/.ssh and it's corresponding keys set up, so there was no password request Where is the "Last Login:" coming from, where does the date stamp come from, and most importantly, where does the hostname come from? While on remote-host@remote.location.example.com (box 456) $echo hostname remote.location.example456.com Or with dig, to make sure I have rDNS/PTR set up, for which I am not authoritative, but my ISP has correctly set... $dig -x 123.234.321.123 PTR remote.location.example456.com or $dig PTR 123.321.234.123.in-addr.arpa. +short remote.location.example456.com. my previous hostname used to be 123-234-321-123-some.cal.isp.net.example, which I set with hostname -s remote.location.example456.com, because it was obnoxious to see such a long name. That solves the value of $echo hostname which now returns remote.location.example456.com. Mac OS X, 10.6 is this case, does seem to honor: touch ~/.hushlogin If leave that file empty, I get nothing on the shell when I login. I want to know what controls the host resolution of the IP, and how it is all working. For example, running last reports a huge list of my logins, which have obtusely long hostnames, when they would be preferable to just be remote.location.example456.com. More confusing to me, reading the man page for wtmp and lastlog, it looks like lastlog is not used on OS X, /var/log/lastlog does not exist. Actually, none of these exist on 10.5 or 10.6: /var/run/utmp The utmp file. /var/log/wtmp The wtmp file. /var/log/lastlog The lastlog file. If I am to assume that the system is doing some kind of reverse lookup, I certainly do not know what it is, as it is not an accurate one.

    Read the article

  • jQuery animation loop not working

    - by Marko Ivanovski
    Hi, I'm trying to create a looping animation that starts on onmousedown and stops on onmouseout. The effect is a simple scroll that will continue looping until you release the mouse. I've created a function which performs the .animate method and it passes itself as a callback but the code only runs once. Here's the entire code: $(document).ready(function() { var $scroller = $("#scroller"); var $content = $("#content", $scroller); // lineHeight equal to 1 line of text var lineHeight = $content.css('line-height'); //Amount to scroll = 3 lines of text a time var amountToScroll = lineHeight.replace("px","")*3; var maxScroll = $content.height() - $scroller.height(); function scrollDown() { var topCoord = $content.css("top").replace("px",""); if(topCoord > -maxScroll) { if((-maxScroll-topCoord) > -amountToScroll) { $content.stop().animate({ top: -maxScroll }, 1000 ); } else { $content.stop().animate({ top: "-=" + amountToScroll }, 1000, function(){ scrollDown() } ); } } } function scrollUp() { var topCoord = $content.css("top").replace("px",""); if(topCoord < 0) { if(topCoord > -amountToScroll) { $content.stop().animate({ top: 0 }, 1000 ); } else { $content.stop().animate({ top: "+=" + amountToScroll }, 1000, function(){scrollUp()} ); } } } $("#scroll-down").mousedown(function() { scrollDown(); }); $("#scroll-down").mouseup(function() { $content.stop(); }); $("#scroll-up").mousedown(function() { scrollUp(); }); $("scroll-up").mouseup(function() { $content.stop(); }); });

    Read the article

  • C++ - Where to code a member function for an inherited object.

    - by Francisco P.
    Hello! I have a few classes (heat, gas, contact, pressure) inheriting from a main one (sensor). I have a need to store them in a vector<Sensor *> (part of the specification). At some point in time, I need to call a function that indiscriminately stores those Sensor *. (also part of the specification, not open for discussion) Something like this: for(size_t i = 0; i < Sensors.size(); ++i) Sensors[i]->storeSensor(os) //os is an ofstream kind of object, passed onwards by reference Where and how shall storeSensor be defined? Is there any simple way to do this or will I need to disregard the specification? Mind you, I'm a beginner! Thanks for your time!

    Read the article

  • Possible for C++ template to check for a function's existence?

    - by andy
    Is it possible to write a C++ template that changes behavior depending on if a certain member function is defined on a class? Here's a simple example of what I would want to write: template<class T> std::string optionalToString(T* obj) { if (FUNCTION_EXISTS(T->toString)) return obj->toString(); else return "toString not defined"; } So if class T has "toString" defined then it uses it, otherwise it doesn't. The magical part that I don't know how to do is the "FUNCTION_EXISTS" part.

    Read the article

  • CommandName issues to insert to a database

    - by Alexander
    In the below code, when we define the parameters CommandName="Insert" is it actually the same as executing the method Insert? As I can't find Insert anywhere... <div class="actionbuttons"> <Club:RolloverButton ID="apply1" CommandName="Insert" Text="Add Event" runat="server" /> <Club:RolloverLink ID="Cancel" Text="Cancel" runat="server" NavigateURL='<%# "Events_view.aspx?EventID=" + Convert.ToString(Eval("ID")) %>' /> </div> I have the following SqlDataSource as well: <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ClubSiteDB %>" SelectCommand="SELECT dbo.Events.id, dbo.Events.starttime, dbo.events.endtime, dbo.Events.title, dbo.Events.description, dbo.Events.staticURL, dbo.Events.photo, dbo.Events.location, dbo.Locations.title AS locationname FROM dbo.Events LEFT OUTER JOIN dbo.Locations ON dbo.Events.location = dbo.Locations.id where Events.id=@id" InsertCommand="INSERT INTO Events(starttime, endtime, title, description, staticURL, location, photo) VALUES (@starttime, @endtime, @title, @description, @staticURL, @location, @photo)" UpdateCommand="UPDATE Events SET starttime = @starttime, endtime=@endtime, title = @title, description = @description, staticURL = @staticURL, location = @location, photo = @photo WHERE (id = @id)" DeleteCommand="DELETE Events WHERE id=@id" OldValuesParameterFormatString="{0}"> <SelectParameters> <asp:QueryStringParameter Name="id" QueryStringField="ID" /> </SelectParameters> <UpdateParameters> <asp:Parameter Name="starttime" Type="DateTime" /> <asp:Parameter Name="endtime" Type="DateTime" /> <asp:Parameter Name="title" /> <asp:Parameter Name="description" /> <asp:Parameter Name="staticURL" /> <asp:Parameter Name="location" /> <asp:Parameter Name="photo" /> <asp:Parameter Name="id" /> </UpdateParameters> <InsertParameters> <asp:Parameter Name="starttime" Type="DateTime" /> <asp:Parameter Name="endtime" Type="DateTime" /> <asp:Parameter Name="title" /> <asp:Parameter Name="description" /> <asp:Parameter Name="staticURL" /> <asp:Parameter Name="location" /> <asp:Parameter Name="photo" /> <asp:Parameter Name="id" /> </InsertParameters> <DeleteParameters> <asp:QueryStringParameter Name="id" QueryStringField="ID" /> </DeleteParameters> </asp:SqlDataSource> I want it to insert using the InsertCommand, however when I do SqlDataSource1.Insert() it's complaining that starttime is NULL

    Read the article

  • jQuery variables and scope

    - by Peuge
    I am writing a jQuery plugin and am running into a few problems with regard to variables. For example I have the following skeleton structure for my plugin, which is going to act on a textbox. In my init function I want to set a variable and bind a keypress event to my textbox. That keypress event needs to call another function, in which I need the variable. Is this possible? (function($){ var methods = { init : function(options){ return this.each(function(){ var $this = $(this); var someVar = 'somevar'; $this.keypress(function(event){ //I want to call my customFunction }); }); }, customFunction : function(){ //I am wanting to access 'someVar' here }; $.fn.mynamespace = function(method){ //handle which method to call here }; })(jQuery); Many thanks in advance.

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 264 265 266 267 268 269 270 271 272 273 274 275  | Next Page >