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  • How do I Call a method from other Class

    - by balexandre
    Hi guys, I'm having some trouble figuring out to call methods that I have in other classes #import "myNewClass.h" #import "MainViewController.h" @implementation MainViewController @synthesize txtUsername; @synthesize txtPassword; @synthesize lblUserMessage; - (IBAction)calculateSecret { NSString *usec = [self calculateSecretForUser:txtUsername.text withPassword:txtPassword.text]; [lblUserMessage setText:usec]; [usec release]; } ... myNewClass.h #import <Foundation/Foundation.h> @interface myNewClass : NSObject { } - (NSString*)CalculateSecretForUser:(NSString *)user withPassword:(NSString *)pwd; @end myNewClass.m #import "myNewClass.h" @implementation myNewClass - (NSString*)CalculateSecretForUser:(NSString *)user withPassword:(NSString *)pwd { NSString *a = [[NSString alloc] initWithFormat:@"%@ -> %@", user, pwd]; return a; } @end the method CalculateSecretForUser always says 'MainViewController' may not respond to '-calculateSecretForUser:withPassword:' what am I doing wrong here?

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  • Where clause in joins vs Where clause in Sub Query

    - by Kanavi
    DDL create table t ( id int Identity(1,1), nam varchar(100) ) create table t1 ( id int Identity(1,1), nam varchar(100) ) DML Insert into t( nam)values( 'a') Insert into t( nam)values( 'b') Insert into t( nam)values( 'c') Insert into t( nam)values( 'd') Insert into t( nam)values( 'e') Insert into t( nam)values( 'f') Insert into t1( nam)values( 'aa') Insert into t1( nam)values( 'bb') Insert into t1( nam)values( 'cc') Insert into t1( nam)values( 'dd') Insert into t1( nam)values( 'ee') Insert into t1( nam)values( 'ff') Query - 1 Select t.*, t1.* From t t Inner join t1 t1 on t.id = t1.id Where t.id = 1 Query 1 SQL profiler Result Reads = 56, Duration = 4 Query - 2 Select T1.*, K.* from ( Select id, nam from t Where id = 1 )K Inner Join t1 T1 on T1.id = K.id Query 2 SQL Profiler Results Reads = 262 and Duration = 2 You can also see my SQlFiddle Query - Which query should be used and why?

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  • Getting a Method's Return Value in the VS Debugger

    - by Bullines
    Is it possible to get a method's return value in the Visual Studio debugger, even if that value isn't assigned to a local variable? For example, I'm debugging the following code: public string Foo(int valueIn) { if (valueIn > 100) return Proxy.Bar(valueIn); else return "Not enough"; } Since I'm not setting any local variables in Foo, and assuming I'm not setting a break point in whatever's calling Foo, is there a way to see what the return value is if I have a breakpoint inside of Foo (or another way)? I don't have much experience with the Autos or Intermediate windows, so I'm not sure if those are even a valid option or not.

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  • INNER JOIN vs LEFT JOIN performance in SQL Server

    - by Ekkapop
    I've created SQL command that use INNER JOIN for 9 tables, anyway this command take a very long time (more than five minutes). So my folk suggest me to change INNER JOIN to LEFT JOIN because the performance of LEFT JOIN is better, at first time its despite what I know. After I changed, the speed of query is significantly improve. I want to know why LEFT JOIN is faster than INNER JOIN? My SQL command look like below: SELECT * FROM A INNER JOIN B ON ... INNER JOIN C ON ... INNER JOIN D and so no

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  • AjaxControlToolkit 3.0.30930.0 vs System.web.extension

    - by John
    Hi, I recently started to use AjaxControlToolkit v3.0.30930.0 in my application together with System.Web.Extension 3.5. My development environment is Visual Studio 2005, .NET Framework 2.0 and the development language is C#. The Ajax control I used is the ModalPopupExtender. I also used the UpdatePanel and updateprogress controls. Everything is working fine on my development machine. But I got a problem after I deployed the application to a server which does not have System.Web.Extension 3.5 installed, which is understandable. My question is, can the ajax controls I used work without System.Web.Extension 3.5? Say I revert the ajaxcontroltoolkit back to version 1.0.61025.0? I don't have the option to install .NET 3.5 as yet. Thank you for your help. John

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  • valueOf() vs. toString() in Javascript

    - by brainjam
    In Javascript every object has a valueOf() and toString() method. I would have thought that the toString() method got invoked whenever a string conversion is called for, but apparently it is trumped by valueOf(). For example, the code var x = {toString: function() {return "foo"; }, valueOf: function() {return 42; }}; window.console.log ("x="+x); window.console.log ("x="+x.toString()); will print x=42 x=foo This strikes me as backwards .. if x were a complex number, for example, I would want valueOf() to give me its magnitude (so that zero would become special), but whenever I wanted to convert to a string I would want something like "a+bi". And I wouldn't want to have to call toString() explicitly in contexts that implied a string. Is this just the way it is?

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  • Delphi, PGDac vs Zeos, Fetch, Lookup?

    - by durumdara
    Hi! I used Zeos to test to know: is ZTable uses fetch technics, or not? May in the future we migrate our lesser system to PGSQL, and this used now "Table" components (as BDE, but it have an SQL-like server). These tables use real cursors, a "Window" with N record, so lookup is very fast, because the Locate/Lookup is started on server, and only these N records are refreshed, no matter, how many records in the lookup table. PGSQL uses fetch technics as I know, and I tested it with a table (id int, name varchar(100)), and 1 million records. (I also trying this with mysql). The adapter is Zeos. ID, sec to find, allocated memory in bytes on client. MySQL 500000 2,761 113 196 344 1000000 3,214 225 471 232 313800 0,437 225 471 232 328066 0,468 225 471 232 276374 0,390 225 471 232 905984 1,264 225 471 232 260253 0,359 225 471 232 PGSQL 500000 3,042 113 188 184 1000000 3,744 225 463 064 313800 0,436 225 463 064 328066 0,452 225 463 064 276374 0,375 225 463 064 905984 1,295 225 463 064 260253 0,359 225 463 064 142023 0,203 225 463 064 As you see the records are fetched locally, this cause the 225 MB usage, and searches are slow a little, based where is the record we must find. I want to ask more things: a.) Is PGDAC have some technics to we can use the lookups without pay the fetch with memory and secs? b.) Or is PG ODBC driver can help in this problem with ADO? (As I know ADO can use server side cursors)? c.) Have anybody some experience with lookup tables, and performance? Is this critical question or it is not? (With client memory usage too). d.) If no chance to avoid fetch hell with lookups, what we can do? Server Side Joins, and unique code for Lookup field changing without real Lookup? Thanks for your help: dd

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  • DataTable vs. Collection in .Net

    - by B Pete
    I am writing a program that needs to read a set of records that describe the register map of a device I need to communicate with. Each record will have a handfull of fields that describe the properties of each register. I don't really need to edit or modify the data in my VB or C# program, though I would like to be able to display the data on a grid. I would like to store the data in a CSV file, or perhaps an XML file. I need to enable users to edit the data off-line, preferably in excel. I am considering using a DataTable or a Collection of "Register" objects (which I would define). I prototyped a DataTable, and found I can read/write XML easily using the built in methods and I can easily bind to a DataGridView. I was not able to find a way to retreive info on a single register without using a query that returns a collection of rows, even though I defined a unique primaty key column. The syntax to get a value from a column is also complex, though I could be missing something on both counts. I'm tempted to use a collection of "Register" objects that I can access via a unique key. It would be a little more coding up front, but seems like a cleaner solution overall. I should still be able to use LINQ to dataset to query subsets of registers when I need them, but would also be able to grab a single field using a the key value, something like this: Registers(keyValue).fieldName). Which would be a cleaner approach to the problem? Is there a way to read/write XML into a Collection without needing custom code? Could this be accomplished using String for a key?

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  • MYSQL OR vs IN performance

    - by Scott
    I am wondering if there is any difference in regards to performance between the following SELECT ... FROM ... WHERE someFIELD IN(1,2,3,4) SELECT ... FROM ... WHERE someFIELD between 0 AND 5 SELECT ... FROM ... WHERE someFIELD = 1 OR someFIELD = 2 OR someFIELD = 3 ... or will MySQL optimize the SQL in the same way compilers will optimize code ? EDIT: Changed the AND's to OR's for the reason stated in the comments.

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  • Access to variables in an asp.net user control vs an include file

    - by user204588
    I've asked this question before but couldn't get the answer I was looking for so I'm going to try it again. I'm translating pages from old asp to asp.net and I don't want to do this any other way so I really just want to know if this can be done. In asp, I'd assign a variable on one page <% myVar = "something" %> I could assign many variables here and then use an include <!--#include file="Test2.aspx"--> then in test2 file, I could access all the variables without having to pass all the variables into the control or declaring them again, like <% myVar = "something else" %> I want to do this the dot net way but I have some thirty variables on the page and i don't want to pass a bunch into the user control and I don't want to have to keep declaring the same variables. All I really want to know is if there is some way to replicate the behavior above in asp.net?

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  • Handling inverted pixels in bitmapData and bitmap class in as3

    - by intoTHEwild
    I am using bitmapData and bitmap classes to render a mouse cursor on the display screen. The bitmapData consists of an area whose colors should be inverted according to the background color. This is a very basic thing which could be observed with text cursor(the vertical line with two small horizontals on top and bottom), when moved over the text area. I want to be able to do the same with the pixels in my bitmapData, is there a way to find out the background color effectively and invert the color values? In this process i will be redrawing the whole pixels, is there any other efficient way to do that ?

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  • How can I get jQuery $('.class', context) to include context itself if it matches .class?

    - by Jake
    I want to be able to match against all elements in a given context including the context element itself. Here is the code I'm using currently, but it seems inefficient. Is there a better way? Note: I'm using jQ 1.3.2, but I'll upgrade soon so I'm interested in 1.4 solutions too. var context = $('#id'); var filters = '.class1, .class2'; // take context itself if it matches filters $(context).filter(filters) // add anything matching filters inside context .add($(filters, context)) Note: .add($(f,c)) works in jQ 1.3 as .add(f,c) in jQ 1.4

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  • Serializing WPF RichTextBox to XAML vs RTF

    - by chaiguy
    I have a RichTextBox and need to serialize its content to my database purely for storage purposes. It would appear that I have a choice between serializing as XAML or as RTF, and am wondering if there are any advantages to serializing to XAML over RTF, which I would consider as more "standard". In particular, am I losing any capability by serializing to RTF instead of XAML? I understand XAML supports custom classes inside the FlowDocument, but I'm not currently using any custom classes (though the potential for extensibility might be enough reason to use XAML).

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  • Serializing WPF RichTextBox to XAML vs RTF

    - by chaiguy
    I have a RichTextBox and need to serialize its content to my database purely for storage purposes. It would appear that I have a choice between serializing as XAML or as RTF, and am wondering if there are any advantages to serializing to XAML over RTF, which I would consider as more "standard". In particular, am I losing any capability by serializing to RTF instead of XAML? I understand XAML supports custom classes inside the FlowDocument, but I'm not currently using any custom classes (though the potential for extensibility might be enough reason to use XAML).

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  • Rails 2.3.4 Vs Rails 3 + Book - Beginner in RoR

    - by zengr
    Hi, I have started with Ruby and Rails development and I am a Java developer from the last 2 years (student). I am in for two things: Learn Ruby Make my website on ROR I have Agile Web Development with Rails, 2nd Edition. So, here are my questions: How is the Agile Web Development with Rails book to start with, where I don't know anything about Ruby and proficient with Java. What is the difference between 2nd and 3rd edition? People say the changes are irrelevant for a starter, how far is that statement correct? Should I start with Rails 2.3.4 or Rails 3 (around the corner)?

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  • Performance Hosting under WAS vs Host as Service?

    - by ashraf
    I have some performance issue when I host WCF service (net.tcp) under WAS (IIS 7). It is working fine when I host service under console application. The issue is WCF Become Slow After Being Idle For 15 Seconds and a solution. After applying Wenlong Dong workaround delay is gone, but it does not work in WAS (IIS 7). I tried to put "ThreadPoolTimeoutWorkaround.DoWorkaround()" in static AppInitialize() as suggested here, still no luck. Thanks

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  • SQL GUID Vs Integer

    - by Dal
    Hi I have recently started a new job and noticed that all the SQL tables use the GUID data type for the primary key. In my previous job we used integers (Auto-Increment) for the primary key and it was a lot more easier to work with in my opinion. For example, say you had two related tables; Product and ProductType - I could easily cross check the 'ProductTypeID' column of both tables for a particular row to quickly map the data in my head because its easy to store the number (2,4,45 etc) as opposed to (E75B92A3-3299-4407-A913-C5CA196B3CAB). The extra frustration comes from me wanting to understand how the tables are related, sadly there is no Database diagram :( A lot of people say that GUID's are better because you can define the unique identifer in your C# code for example using NewID() without requiring SQL SERVER to do it - this also allows you to know provisionally what the ID will be.... but I've seen that it is possible to still retrieve the 'next auto-incremented integer' too. A DBA contractor reported that our queries could be up to 30% faster if we used the Integer type instead of GUIDS... Why does the GUID data type exist, what advantages does it really provide?... Even if its a choice by some professional there must be some good reasons as to why its implemented?

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  • Hibernate mapping, on a unmapped class

    - by Jan
    Hi, I' ve got 2 tables... Challenge and ChallengeYear, ChallengeYear is only to create a list of years in challenge. I only want to make Challenge an entity, containing a list of List years. Is this possible? I've looked in to @SecondaryTable together with @JoinColumn and @OneToMany, but neither of those can do the trick, or i am overlooking something. Can someone help me? Greetings, Jan

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  • Dependency Property Set Priority: CodeBehind vs. XAML

    - by LukePet
    When I initialize a control property from code, the binding to the same property defined on XAML don't work. Why? For Example, I set control properties on startup with this statements: myControl.SetValue(UIElement.VisibilityProperty, DefaultProp.Visibility); myControl.SetValue(UIElement.IsEnabledProperty, DefaultProp.IsEnabled); and on xaml I bind the property of myControl in this way: IsEnabled="{Binding Path=IsKeyControlEnabled}" now, when the property "IsKeyControlEnabled" changes to false, myControl remains enabled (because it's initialize with true value). How can I do?

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  • jquery checkbox help

    - by sea_1987
    The Problem I am trying to run some ajax on one my pages for my website, basically I have three checkboxes all of which on pageload are unselected, when a checkbox is clicked I need to be able load in via ajax the relevant HTML. This system is currently a PHP script that depending on what the POST is set returns a different view, so I think all I need to is send the POST via AJAX, but I need to do everytime a new checkbox is checked. My HTML looks like this, div class="segment"> <div class="label"> <label>Choose region: </label> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio checked" value="Y" name="area[Nationwide]" id="inp_Nationwide"> </div> <div class="label "> <label for="inp_Nationwide">Nationwide</label> </div> <div class="s">&nbsp;</div> </div> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio checked" value="Y" name="area[Lancashire]" id="inp_Lancashire"> </div> <div class="label "> <label for="inp_Lancashire">Lancashire</label> </div> <div class="s">&nbsp;</div> </div> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio" value="Y" name="area[West_Yorkshire]" id="inp_West_Yorkshire"> </div> <div class="label "> <label for="inp_West_Yorkshire">West Yorkshire</label> </div> <div class="s">&nbsp;</div> </div> <div class="s">&nbsp;</div> </div> </div> My current attempt was to ascertain whether the input has been clicked so I have done this with my javascript, though this is probably wrong, $('input.radio').click(function(){ if($(this).hasClass('clicked')) { $(this).removeClass('clicked'); } else { $(this).addClass('clicked'); } });

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  • ROW_NUMBER() VS. DISTINCT

    - by ramadan2050
    Dear All, I have a problem with ROW_NUMBER() , if i used it with DISTINCT in the following Query I have 2 scenarios: 1- run this query direct : give me for example 400 record as a result 2- uncomment a line which start with [--Uncomment1--] : give me 700 record as a result it duplicated some records not all the records what I want is to solve this problem or to find any way to show a row counter beside each row, to make a [where rownumber between 1 and 30] --Uncomment2-- if I put the whole query in a table, and then filter it , it is work but it still so slow waiting for any feedback and I will appreciate that Thanks in advance SELECT * FROM (SELECT Distinct CRSTask.ID AS TaskID, CRSTask.WFLTaskID, --Uncomment1-- ROW_NUMBER() OVER (ORDER By CRSTask.CreateDate asc ) AS RowNum , CRSTask.WFLStatus AS Task_WFLStatus, CRSTask.Name AS StepName, CRSTask.ModifiedDate AS Task_ModifyDate, CRSTask.SendingDate AS Task_SendingDate, CRSTask.ReceiveDate AS Task_ReceiveDate, CRSTask.CreateDate AS Task_CreateDate, CRS_Task_Recipient_Vw.Task_CurrentSenderName, CRS_Task_Recipient_Vw.Task_SenderName, CRS_INFO.ID AS CRS_ID, CRS_INFO.ReferenceNumber, CRS_INFO.CRSBeneficiaries, CRS_INFO.BarCodeNumber, ISNULL(dbo.CRS_FNC_GetTaskReceiver(CRSTask.ID), '') + ' ' + ISNULL (CRS_Organization.ArName, '') AS OrgName, CRS_Info.IncidentID, COALESCE(CRS_Subject.ArSubject, '??? ????') AS ArSubject, COALESCE(CRS_INFO.Subject, 'Blank Subject') AS CRS_Subject, CRS_INFO.Mode, CRS_Task_Recipient_Vw.ReceiverID, CRS_Task_Recipient_Vw.ReceiverType, CRS_Task_Recipient_Vw.CC, Temp_Portal_Users_View.ID AS CRS_LockedByID, Temp_Portal_Users_View.ArabicName AS CRS_LockedByName, CRSDraft.ID AS DraftID, CRSDraft.Type AS DraftType, CASE WHEN CRS_Folder = 1 THEN Task_SenderName WHEN CRS_Folder = 2 THEN Task_SenderName WHEN CRS_Folder = 3 THEN Task_CurrentSenderName END AS SenderName, CRS_Task_Folder_Vw.CRS_Folder, CRS_INFO.Status, CRS_INFO.CRS_Type, CRS_Type.arName AS CRS_Type_Name FROM CRS_Task_Folder_Vw LEFT OUTER JOIN CRSTask ON CRSTask.ID = CRS_Task_Folder_Vw.TaskID LEFT OUTER JOIN CRS_INFO ON CRS_INFO.ID = CRSTask.CRSID LEFT OUTER JOIN CRS_Subject ON COALESCE( SUBSTRING( CRS_INFO.Subject, CHARINDEX('_', CRS_INFO.Subject) + 1, LEN(CRS_INFO.Subject) ), 'Blank Subject' ) = CRS_Subject.ID LEFT OUTER JOIN CRSInfoAttribute ON CRS_INFO.ID = CRSInfoAttribute.ID LEFT OUTER JOIN CRS_Organization ON CRS_Organization.ID = CRSInfoAttribute.SourceID LEFT OUTER JOIN CRS_Type ON CRS_INFO.CRS_Type = CRS_Type.ID LEFT OUTER JOIN CRS_Way ON CRS_INFO.CRS_Send_Way = CRS_Way.ID LEFT OUTER JOIN CRS_Priority ON CRS_INFO.CRS_Priority_ID = CRS_Priority.ID LEFT OUTER JOIN CRS_SecurityLevel ON CRS_INFO.SecurityLevelID = CRS_SecurityLevel.ID LEFT OUTER JOIN Portal_Users_View ON Portal_Users_View.ID = CRS_INFO.CRS_Initiator LEFT OUTER JOIN AD_DOC_TBL ON CRS_INFO.DocumentID = AD_DOC_TBL.ID LEFT OUTER JOIN CRSTask AS Temp_CRSTask ON CRSTask.ParentTask = Temp_CRSTask.ID LEFT OUTER JOIN Portal_Users_View AS Temp_Portal_Users_View ON Temp_Portal_Users_View.ID = AD_DOC_TBL.Lock_User_ID LEFT OUTER JOIN Portal_Users_View AS Temp1_Portal_Users_View ON Temp1_Portal_Users_View.ID = CRS_INFO.ClosedBy LEFT OUTER JOIN CRSDraft ON CRSTask.ID = CRSDraft.TaskID LEFT OUTER JOIN CRS_Task_Recipient_Vw ON CRSTask.ID = CRS_Task_Recipient_Vw.TaskID --LEFT OUTER JOIN CRSTaskReceiverUsers ON CRSTask.ID = CRSTaskReceiverUsers.CRSTaskID AND CRS_Task_Recipient_Vw.ReceiverID = CRSTaskReceiverUsers.ReceiverID LEFT OUTER JOIN CRSTaskReceiverUserProfile ON CRSTask.ID = CRSTaskReceiverUserProfile.TaskID WHERE Crs_Info.SUBJECT <> 'Blank Subject' AND (CRS_INFO.Subject NOT LIKE '%null%') AND CRS_Info.IsDeleted <> 1 /* AND CRSTask.WFLStatus <> 6 AND CRSTask.WFLStatus <> 8 */ AND ( ( CRS_Task_Recipient_Vw.ReceiverID IN (1, 29) AND CRS_Task_Recipient_Vw.ReceiverType IN (1, 3, 4) ) ) AND 1 = 1 )Codes --Uncomment2-- WHERE Codes.RowNum BETWEEN 1 AND 30 ORDER BY Codes.Task_CreateDate ASC

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  • App.config vs. .ini files

    - by Jakob Gade
    I'm reviewing a .NET project, and I came across some pretty heavy usage of .ini files for configuration. I would much prefer to use app.config files instead, but before I jump in and make an issue out of this with the devs, I wonder if there are any valid reasons to favor .ini files over app.config?

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  • Python try...except comma vs 'as' in except

    - by peter
    What is the difference between ',' and 'as' in except statements, eg: try: pass except Exception, exception: pass and: try: pass except Exception as exception: pass Is the second syntax legal in 2.6? It works in CPython 2.6 on Windows but the 2.5 interpreter in cygwin complains that it is invalid. If they are both valid in 2.6 which should I use?

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