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  • Does a servlet-based stack have significant overheads?

    - by John
    I don't know if it's simply because page-loads take a little time, or the way servlets have an abstraction framework above the 'bare metal' of HTTP, or just because of the "Enterprise" in Jave-EE, but in my head I have the notion that a servlet-based app is inherently adding overhead compared to a Java app which simply deals with sockets directly. Forget web-pages, imagine instead a Java server app where you send it a question over an HTTP request and it looks up an answer from memory and returns the answer in the response. You can easily write a Java socket-based app which does this, you can also do a servlet approach and get away from the "bare metal" of sockets. Is there any measurable performance impact to be expected implementing the same approach using Servlets rather than a custom socket-based HTTP listening app? And yes, I am hazy on the exact data sent in HTTP requests and I know it's a vague question. It's really about whether servlet implementations have lots of layers of indirection or anything else that would add up to a significant overhead per call, where by significant I mean maybe an additional 0.1s or more.

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  • Stack Info button above UIView in Utility App

    - by bgw
    I've started creating a iPhone Utility app (main view and flip view). I want to draw some graphics in the Main view, so I dragged a UIView object onto it. This works, but I find that if I resize the UIView to fill the Main view, it covers the Info button that invokes the Flip view. Is there any way to get the Info button to appear on top of the UIView? In IB? In code?

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  • [C++] Needed: A simple C++ container (stack, linked list) that is thread-safe for writing

    - by conradlee
    I am writing a multi-threaded program using OpenMP in C++. At one point my program forks into many threads, each of which need to add "jobs" to some container that keeps track of all added jobs. Each job can just be a pointer to some object. Basically, I just need the add pointers to some container from several threads at the same time. Is there a simple solution that performs well? After some googling, I found that STL containers are not thread-safe. Some stackoverflow threads address this question, but none form a consensus on a simple solution.

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  • how to use database name as a value

    - by user316833
    I have more than 1000 access databases with the same table names.Each database has a unique name. In each database, I want to add column to one existing table and populate that new column (all rows in the table would be the same) with the database name. I found the example below - How can I alter this to give the new column the name of the database. ALTER TABLE TestTable ADD NewColumn INT; UPDATE TestTable SET NewColumn = 0;

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  • regular expressions for class name

    - by user576701
    i need a regular expressions string to get all anchor tags in a page with a specific css class name, in c#/vb.net this is what i got so far "<a.*?href=""(.*?)"".*?>(.*?)</a>" but my attempts to add "class=name" isnt working, also is it possible to find links where the class name appears either before or after the href with one expression ? i am familiar with 3rd party html libraries, but thats an overkill for what i have in mind, so is the webbrowser control.

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  • Loading a view routed by a URL parameter (e.g., /users/:id) in MEAN stack

    - by Matt Rowles
    I am having difficulties with trying to load a user by their id, for some reason my http.get call isn't hitting my controller. I get the following error in the browser console: TypeError: undefined is not a function at new <anonymous> (http://localhost:9000/scripts/controllers/users.js:10:8) Update I've fixed my code up as per comments below, but now my code just enters an infinite loop in the angular users controllers (see code below). I am using the Angular Express Generator for reference Backend - nodejs, express, mongo routes.js: // not sure if this is required, but have used it before? app.param('username', users.show); app.route('/api/users/:username') .get(users.show); controller.js: // This never gets hit exports.show = function (req, res, next, username) { User.findOne({ username: username }) .exec(function (err, user) { req.user = user; res.json(req.user || null); }); }; Frontend - angular app.js: $routeProvider .when('/users/:username', { templateUrl: function( params ){ return 'users/view/' + params.username; }, controller: 'UsersCtrl' }) services/user.js: angular.module('app') .factory('User', function ($resource) { return $resource('/api/users/:username', { username: '@username' }, { update: { method: 'PUT', params: {} }, get: { method: 'GET', params: { username:'username' } } }); }); controllers/users.js: angular.module('app') .controller('UsersCtrl', ['$scope', '$http', '$routeParams', '$route', 'User', function ($scope, $http, $routeParams, $route, User) { // this returns the error above $http.get( '/api/users/' + $routeParams.username ) .success(function( user ) { $scope.user = user; }) .error(function( err) { console.log( err ); }); }]); If it helps, I'm using this setup

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  • How to find the exact name of the view in asp.net mvc (including the case)

    - by Charles Prakash Dasari
    I have a control in ASP.NET MVC that spits out JavaScript in the page header (in the view page). I derive some values from the current view name (including its case). Let's say we are talking about the path: /Home/Index - my control spits out JavaScript to call a function with the view name - in its exact case - e.g. someFunction('Index'). Now when I try to navigate to my view using '/home/index', the view name is returned as 'index' which is causing issues in my JavaScript as I rely on the casing for it on the JS side. Is there any way to know the exact view name (as it was defined) from the path that got mapped into this view.

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  • send name="" in jquery javascript?

    - by Azzyh
    Hello So i have this: yes: <input type="radio" value="Y" id="SCvoteY" name="vote"></input> no: <input type="radio" id="SCvoteN" value="N" name="vote"> </input> How do i write that it should transfer name="vote" data ? #vote doesnt work, .vote either (guess it cause thats for class and ID) but what about name then? function DoSCInsert(){ $("#SCres").html("please wait.."); var nocache = '0'; var data = { fID : $("#fID").val(), vote : $("#vote").val(), comment: $("#comment").val(), nocache: nocache }; $.get('insertSC.php', data, onSCInsertComplete); } And how do i shorten this, ive heard that you can you a function in jquery called serialize to pass strings but can you(if you know how) show example by this script how to pass it like this one does?

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  • changing the name of type="file" input tag?

    - by Syom
    i have an input tag... <input type="file" name="upload"> for browsing it makes the button vith value "browse"(in mozilla) the question is: how can i change the name of that button? i want it to have the name "select" instead of "browse". Thanks

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  • Getting list of key values from app config with same name

    - by NoviceMe
    I have follwing in app.config file: <appSettings> <add key="Name" value="Office"/> ... <add key="Name" value="HotSpot"/> ... <add key="Name" value="Home"/> </appSettings> I tried ConfigurationManager.AppSettings["Name"] But it only gives me one Value? How can i get list of all values? I am using c# 3.5. Is there lambda expression or something i can use to get that?

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  • Input field name starts with a number

    - by fire
    I have an input field whose name is an MD5 string e.g.: <input type="hidden" name="7815696ecbf1c96e6894b779456d330e" value="1"> Now I understand that having a number as the first letter in an input field name is generally bad practice, but are there any side-effects to this such as a certain browser won't send it in the POST request?

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  • How to release my view from stack ?

    - by aman-gupta
    Hi, In my application I m using following coding convention to open my default screen :-- AppDelegate *ptrDefaultScreen = (AppDelegate *)[[UIApplication sharedApplication]delegate]; [self.navigationController presentModalViewController:ptrDefaultScreen.FrmFlashScreenLink animated:YES]; but when I move to other screen after default screen ,my default screen is still exists even i used [self dismissModelViewController:YES]; to dimiss default screen from view. where I m wrong I want my default screen will be completely removed from view. Is any other way to call default screen before actual application. Please help me out.Thanks in advance

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  • jquery elementby class and set name

    - by tom
    Hello can some one help me with code to get element by classname and also change the name currently ive tried $('selected').attr("name", 'blah blah'); and also $('.selected').attr("name", 'blah blah'); noneof these work thanks

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  • Difference between name != null and null != name in java?

    - by GK
    I have seen people using the following conditions interchangeably. String name; //some code if(name != null) //or if(null != name) So is there any difference in this? or both are same? I am asking this here because, i heard that there is some difference in these, but don't know what. Thanks

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  • name of the class that contains the method code

    - by kdlp
    I'm trying to find the name of the class that contains method code. In the example underneath I use self.__class__.__name__, but of course this returns the name of the class of which self is an instance and not class that contains the test() method code. b.test() will print 'B' while I would like to get 'A'. I looked into the inspect module documentation but did not find anything directly useful. class A: def __init__(self): pass def test(self): print self.__class__.__name__ class B(A): def __init__(self): A.__init__(self) a = A() b = B() a.test() b.test()

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  • GetUserDetails error Error 27 The name 'IMGUserLabel' does not exist in the current context

    - by FBEvo1
    I need to get the users name displayed next to the Users picture. The Picture works great however the IMGUserLabel says it not in context. . can you help me solve this? public void GetUserDetails(int id) { string getUserDetail = "Select ID,Email,Name,Country,Convert(varchar (20), RegisterDate, 106) RegisterDate,Convert(varchar (20), LastLogin, 106) LastLogin ,Description,ImageName FROM [User] where Id='" + id + "'"; dt = dbClass.ConnectDataBaseReturnDT(getUserDetail); if (dt.Rows.Count > 0) { IMGUserLabel.Text = dt.Rows[0]["Name"].ToString(); NameLabel.Text = dt.Rows[0]["Name"].ToString(); UserImage.ImageUrl = "~/UserImage/" + dt.Rows[0]["ImageName"].ToString(); lblCreated.Text = dt.Rows[0]["RegisterDate"].ToString(); LabelLastLogin.Text = dt.Rows[0]["LastLogin"].ToString(); lblCreated.Text = dt.Rows[0]["RegisterDate"].ToString(); LabelAboutMe.Text = dt.Rows[0]["Description"].ToString(); } } ///////////// .Aspx ////////// <a href="<%#GetUserDetails(GetUser(Int Id)%>"> <asp:Label ID="IMGUserLabel" runat="server" Text="Label" Font-Names="Segoe UI" Font-Size="Larger" ForeColor="White" src="<%#GetUserDetails(GetUser(Int Id)%>"> </asp:Label> </a> he name 'IMGUserLabel' does not exist in the current context?

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  • validating an XML schema with empty attributes

    - by AdRock
    I am having trouble validating my xml schema. I get these errors on the schema 113: 18 s4s-elt-invalid-content.1: The content of '#AnonType_user' is invalid. 164: 17 s4s-elt-invalid-content.1: The content of '#AnonType_festival' is invalid. Element 'sequence' is invalid, misplaced, or occurs too often. and becuase of those 2 errors, i am getting loads of the same error. This is becuase the attribute id of the festival tag may be empty becuase there is not data for that festival cvc-datatype-valid.1.2.1: '' is not a valid value for 'integer'. cvc-attribute.3: The value '' of attribute 'id' on element 'festival' is not valid with respect to its type, 'integer'. The lines in the schema causing the problems are <xs:element name="user"> <xs:complexType> <xs:attribute name="id" type="xs:integer"/> <xs:sequence> <xs:element ref="personal"/> <xs:element ref="account"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="festival"> <xs:complexType> <xs:attribute name="id" type="xs:integer" user="optional"/> <xs:sequence> <xs:element ref="event"/> <xs:element ref="contact"/> </xs:sequence> </xs:complexType> </xs:element> This is a snippet from my XML file. One user has a festival and the other doesn't <member> <user id="3"> <personal> <name>Skye Saunders</name> <sex>Female</sex> <address1>31 Anns Court</address1> <address2></address2> <city>Cirencester</city> <county>Gloucestershire</county> <postcode>GL7 1JG</postcode> <telephone>01958303514</telephone> <mobile>07260491667</mobile> <email>[email protected]</email> </personal> <account> <username>BigUndecided</username> <password>ea297847f80e046ca24a8621f4068594</password> <userlevel>2</userlevel> <signupdate>2010-03-26T09:23:50</signupdate> </account> </user> <festival id=""> <event> <eventname></eventname> <url></url> <datefrom></datefrom> <dateto></dateto> <location></location> <eventpostcode></eventpostcode> <coords> <lat></lat> <lng></lng> </coords> </event> <contact> <conname></conname> <conaddress1></conaddress1> <conaddress2></conaddress2> <concity></concity> <concounty></concounty> <conpostcode></conpostcode> <contelephone></contelephone> <conmobile></conmobile> <fax></fax> <conemail></conemail> </contact> </festival> </member> <member> <user id="4"> <personal> <name>Connor Lawson</name> <sex>Male</sex> <address1>12 Ash Way</address1> <address2></address2> <city>Swindon</city> <county>Wiltshire</county> <postcode>SN3 6GS</postcode> <telephone>01791928119</telephone> <mobile>07338695664</mobile> <email>[email protected]</email> </personal> <account> <username>iTuneStinker</username> <password>3a1f5fda21a07bfff20c41272bae7192</password> <userlevel>3</userlevel> <signupdate>2010-03-26T09:23:50</signupdate> </account> </user> <festival id="1"> <event> <eventname>Oxford Folk Festival</eventname> <url>http://www.oxfordfolkfestival.com/</url> <datefrom>2010-04-07</datefrom> <dateto>2010-04-09</dateto> <location>Oxford</location> <eventpostcode>OX19BE</eventpostcode> <coords> <lat>51.735640</lat> <lng>-1.276136</lng> </coords> </event> <contact> <conname>Stuart Vincent</conname> <conaddress1>P.O. Box 642</conaddress1> <conaddress2></conaddress2> <concity>Oxford</concity> <concounty>Bedfordshire</concounty> <conpostcode>OX13BY</conpostcode> <contelephone>01865 79073</contelephone> <conmobile></conmobile> <fax></fax> <conemail>[email protected]</conemail> </contact> </festival> </member> This is my schema <?xml version="1.0" encoding="UTF-8"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"> <xs:simpleType name="postcode"> <xs:restriction base="xs:string"> <xs:minLength value="6"/> <xs:maxLength value="8"/> </xs:restriction> </xs:simpleType> <xs:simpleType name="telephone"> <xs:restriction base="xs:string"> <xs:minLength value="10"/> <xs:maxLength value="13"/> </xs:restriction> </xs:simpleType> <xs:simpleType name="mobile"> <xs:restriction base="xs:string"> <xs:minLength value="11"/> <xs:maxLength value="11"/> </xs:restriction> </xs:simpleType> <xs:simpleType name="password"> <xs:restriction base="xs:string"> <xs:minLength value="32"/> <xs:maxLength value="32"/> </xs:restriction> </xs:simpleType> <xs:simpleType name="userlevel"> <xs:restriction base="xs:integer"> <xs:enumeration value="1"/> <xs:enumeration value="2"/> <xs:enumeration value="3"/> <xs:enumeration value="4"/> </xs:restriction> </xs:simpleType> <xs:simpleType name="county"> <xs:restriction base="xs:string"> <xs:enumeration value="Bedfordshire"/> <xs:enumeration value="Berkshire"/> <xs:enumeration value="Bristol"/> <xs:enumeration value="Buckinghamshire"/> <xs:enumeration value="Cambridgeshire"/> <xs:enumeration value="Cheshire"/> <xs:enumeration value="Cleveland"/> <xs:enumeration value="Cornwall"/> <xs:enumeration value="Cumberland"/> <xs:enumeration value="Derbyshire"/> <xs:enumeration value="Devon"/> <xs:enumeration value="Dorset"/> <xs:enumeration value="Durham"/> <xs:enumeration value="East Ridings Of Yorkshire"/> <xs:enumeration value="Essex"/> <xs:enumeration value="Gloucestershire"/> <xs:enumeration value="Hampshire"/> <xs:enumeration value="Herefordshire"/> <xs:enumeration value="Hertfordshire"/> <xs:enumeration value="Huntingdonshire"/> <xs:enumeration value="Isle Of Man"/> <xs:enumeration value="Kent"/> <xs:enumeration value="Lancashire"/> <xs:enumeration value="Leicestershire"/> <xs:enumeration value="Lincolnshire"/> <xs:enumeration value="London"/> <xs:enumeration value="Middlesex"/> <xs:enumeration value="Norfolk"/> <xs:enumeration value="North Yorkshire"/> <xs:enumeration value="Northamptonshire"/> <xs:enumeration value="Northumberland"/> <xs:enumeration value="Nottinghamshire"/> <xs:enumeration value="Oxfordshire"/> <xs:enumeration value="Rutland"/> <xs:enumeration value="Shropshire"/> <xs:enumeration value="Somerset"/> <xs:enumeration value="South Yorkshire"/> <xs:enumeration value="Staffordshire"/> <xs:enumeration value="Suffolk"/> <xs:enumeration value="Surrey"/> <xs:enumeration value="Sussex"/> <xs:enumeration value="Tyne and Wear"/> <xs:enumeration value="Warwickshire"/> <xs:enumeration value="West Yorkshire"/> <xs:enumeration value="Westmorland"/> <xs:enumeration value="Wiltshire"/> <xs:enumeration value="Wirral"/> <xs:enumeration value="Worcestershire"/> <xs:enumeration value="Yorkshire"/> </xs:restriction> </xs:simpleType> <xs:element name="folktask"> <xs:complexType> <xs:sequence> <xs:element minOccurs="0" maxOccurs="unbounded" ref="member"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="member"> <xs:complexType> <xs:sequence> <xs:element ref="user" minOccurs="0" maxOccurs="unbounded"/> <xs:element ref="festival" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="user"> <xs:complexType> <xs:attribute name="id" type="xs:integer"/> <xs:sequence> <xs:element ref="personal"/> <xs:element ref="account"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="personal"> <xs:complexType> <xs:sequence> <xs:element ref="name"/> <xs:element ref="sex"/> <xs:element ref="address1"/> <xs:element ref="address2"/> <xs:element ref="city"/> <xs:element ref="county"/> <xs:element ref="postcode"/> <xs:element ref="telephone"/> <xs:element ref="mobile"/> <xs:element ref="email"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="name" type="xs:string"/> <xs:element name="sex" type="xs:string"/> <xs:element name="address1" type="xs:string"/> <xs:element name="address2" type="xs:string"/> <xs:element name="city" type="xs:string"/> <xs:element name="county" type="xs:string"/> <xs:element name="postcode" type="postcode"/> <xs:element name="telephone" type="telephone"/> <xs:element name="mobile" type="mobile"/> <xs:element name="email" type="xs:string"/> <xs:element name="account"> <xs:complexType> <xs:sequence> <xs:element ref="username"/> <xs:element ref="password"/> <xs:element ref="userlevel"/> <xs:element ref="signupdate"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="username" type="xs:string"/> <xs:element name="password" type="password"/> <xs:element name="userlevel" type="userlevel"/> <xs:element name="signupdate" type="xs:dateTime"/> <xs:element name="festival"> <xs:complexType> <xs:attribute name="id" type="xs:integer" user="optional"/> <xs:sequence> <xs:element ref="event"/> <xs:element ref="contact"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="event"> <xs:complexType> <xs:sequence> <xs:element ref="eventname"/> <xs:element ref="url"/> <xs:element ref="datefrom"/> <xs:element ref="dateto"/> <xs:element ref="location"/> <xs:element ref="eventpostcode"/> <xs:element ref="coords"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="eventname" type="xs:string"/> <xs:element name="url" type="xs:string"/> <xs:element name="datefrom" type="xs:date"/> <xs:element name="dateto" type="xs:date"/> <xs:element name="location" type="xs:string"/> <xs:element name="eventpostcode" type="postcode"/> <xs:element name="coords"> <xs:complexType> <xs:sequence> <xs:element ref="lat"/> <xs:element ref="lng"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="lat" type="xs:decimal"/> <xs:element name="lng" type="xs:decimal"/> <xs:element name="contact"> <xs:complexType> <xs:sequence> <xs:element ref="conname"/> <xs:element ref="conaddress1"/> <xs:element ref="conaddress2"/> <xs:element ref="concity"/> <xs:element ref="concounty"/> <xs:element ref="conpostcode"/> <xs:element ref="contelephone"/> <xs:element ref="conmobile"/> <xs:element ref="fax"/> <xs:element ref="conemail"/> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="conname" type="xs:string"/> <xs:element name="conaddress1" type="xs:string"/> <xs:element name="conaddress2" type="xs:string"/> <xs:element name="concity" type="xs:string"/> <xs:element name="concounty" type="xs:string"/> <xs:element name="conpostcode" type="postcode"/> <xs:element name="contelephone" type="telephone"/> <xs:element name="conmobile" type="mobile"/> <xs:element name="fax" type="telephone"/> <xs:element name="conemail" type="xs:string"/> </xs:schema>

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