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  • Importing a spreadsheet, but having trouble.

    - by Chris Phelps
    I have a form that allows a user to import a spreadsheet. This spreadsheet is generally static when it comes to column headers, but now the users want to be able to include an optional column (called Notes). My code crashes when I try to read the column from the spreadsheet if it doesn't exist. Dim objCommand As New OleDbCommand() objCommand = ExcelConnection() 'function that opens spreadsheet and returns objCommand Dim reader As OleDbDataReader reader = objCommand.ExecuteReader() While reader.Read() Dim Employee As String = Convert.ToString(reader("User")) Dim SerialNUM As String = Convert.ToString(reader("serialno")) **Dim Notes As String = Convert.ToString(reader("notes"))** If the spreadsheet contains a Notes column, all goes well. If not, crash. How can I check to see if the Notes column exists in the spreadsheet to avoid the crash?

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  • Why is the base class being called?

    - by oneBelizean
    I'm new to c# so bare with me. But here's my situation. interface Icontainer{ string name(); } abstract class fuzzyContainer : Icontainer{ string name(){ return "Fuzzy Container"; } } class specialContainer: fuzzyContainer{ string name(){ return base.name() + " Special Container"; } } Icontainer cont = new SpecialContainer(); cont.name(); // I expected "Fuzzy Container Special Container" as the output. When I run my code as described above the output is simply "Fuzzy Container". What am i missing here? Is there a better way to get the desired results?

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  • List<T> add method in C#

    - by Nano HE
    Hello. As I know. List Add method works as below. List<string> cities = new List<string>(); cities.Add("New York"); cities.Add("Mumbai"); cities.Add("Berlin"); cities.Add("Istanbul"); If I designed the data structure as this List<object> lstObj = new List<object>(); if (true) // string members { cities.Add("New York"); cities.Add("Istanbul"); } else // List obj members here { List<object> AListObject= new List<object>(); cities.Add(AListObject); // how to handle this? } Does the List Add method works or not if I add different types members in the same function.

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  • Delegates doesnot work properly

    - by Warrior
    I am new to iphone development.I am covering the date to the desired format and set it to the delegates and get its value in the another view.The session restarts when i tried to get the value from delegates.If i set the original date and not the formatted date in the set delegate ,then i able to get the value in the another view.If i also give any static string value,then also i am able to the static string value back.Only the formatted date which is string is set then the session restarts.If i print and check the value of the formatted date it prints the correct formatted date only.Please help me out.Here is my code for date conversion NSString *dateval=[[stories objectAtIndex: storyIndex] objectForKey:@"date"]; NSDateFormatter *inputFormatter = [[NSDateFormatter alloc] init]; [inputFormatter setDateFormat:@"EEE, MMM dd, yyyy"]; NSDate *inputDate = [inputFormatter dateFromString:dateval]; NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init]; [outputFormatter setDateFormat:@"MMMM dd"]; NSString *outputDate = [outputFormatter stringFromDate:inputDate]; AppDelegate *delegate=(AppDelegate *)[[UIApplication sharedApplication]delegate]; [delegate setCurrentDates:outputDate]; Thanks.

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  • Human readable URL causes a problem in Ruby on Rails

    - by TK
    I have a basic CRUD with "Company" model. To make the company name show up, I did def to_param name.parameterize end Then I accessed http://localhost:3000/companies/american-express which runs show action in the companies controller. Obviously this doesn't work because the show method is as following: def show @company = Company.find_by_id(params[:id]) end The params[:id] is american-express. This string is not stored anywhere. Do I need to store the short string (i.e., "american-express") in the database when I save the record? Or is there any way to retrieve the company data without saving the string in the database?

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  • Receiving Text From Another Application

    - by Garry
    Hi, I'm building some home automation software with Cocoa/Objective-C. The main application will have a minimal GUI and will most likely be represented by a status bar icon only. I'm using proprietary speech-to-text software (MacSpeech Dictate) that takes my voice command and converts it to plain text. I then need to send this plain text to my app for parsing. Is there a way to send a string to a Cocoa application? Could AppleScript achieve this? How would I make the NSString string in my app "available" to receive the passed string? For reasons that are beyond the scope of this question - it is not possible to dictate the command directly into my app. Many thanks in advance,

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  • Index out of bounds exception in c#

    - by Naga
    I have the following code in my program which is throwing index out of bound exception at line yearList.SetValue(years[count], count); protected void invoiceYear_DataBound(object sender, EventArgs e) { //invoiceYear.SelectedItem.Value= GetYearRange(); String[] years = GetYearRange().Split(new char[] { '[', ',', ']',' ' }); ListItem [] yearList = new ListItem[]{}; System.Diagnostics.Debug.WriteLine("years-->" + years.Length); for (int i = 0; i < years.Length; i++) { System.Diagnostics.Debug.WriteLine("years-->" + years.GetValue(i)); } int count = 0; foreach (String str in years) { if (string.IsNullOrEmpty(str)) System.Diagnostics.Debug.WriteLine("empty"); else { yearList.SetValue(years[count], count); count++; } } //System.Diagnostics.Debug.WriteLine("yearList-->" + yearList.GetValue(0)); //invoiceYear.Items.AddRange(yearList); }

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  • how to turn off percentage sign in .net/wpf?

    - by Vitalik
    I would like my WPF application to display all percentages without % sign. For example 20% would be displayed as "20" but i still want to use the standard formatting for percentages (so i get the benefit of string formatter to multiply it by 100 for me) in other words, how do i get string.Format("0.00%", 0.2) to output "20" but not "20%"? Is it possible to globally define PercentSymbol as empty string for the entire application? In particular i am using ContentStringFormat in my WPF application to format the numbers and percentages. Maybe i can do it directly in WPF.

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  • python processs complete list files matched

    - by thomytheyon
    Hi All, I'm trying to get a simple code working, unfortunatly im a python beginner. My script should return a list of files that doesn't match a pattern, more information here : http://stackoverflow.com/questions/2910106/python-grep-reverse-matching/2910288#2910288 My code is running but doesn't process the complete list of files found as it should : import sys,os filefilter = ['.xml','java','.jsp','lass'] path= "/home/patate/code/project" s = "helloworld" for path, subdirs, files in os.walk(path): for name in files: if name[-4:] in filefilter : f = str(os.path.join(path, name)) with open(f) as fp: if s in fp.read(): print "%s has the string" % f else: print "%s doesn't have the string" % f This code return : /home/patate/code/project/blabla/blabla/build.xml doesn't have the string None If i change f = str(os.path.join(path, name)) for print str(os.path.join(path, name)) I can see the whole list being printed. How can i process the whole list as i which to ? :( Thanks again.

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  • FindBugs and CheckForNull on classes vs. interfaces

    - by ndn
    Is there any way to let FindBugs check and warn me if a CheckForNull annotation is present on the implementation of a method in a class, but not on the declaration of the method in the interface? import javax.annotation.CheckForNull; interface Foo { public String getBar(); } class FooImpl implements Foo { @CheckForNull @Override public String getBar() { return null; } } public class FindBugsDemo { public static void main(String[] args) { Foo foo = new FooImpl(); System.out.println(foo.getBar().length()); } } I just discovered a bug in my application due to a missing null check that was not spotted by FindBugs because CheckForNull was only present on FooImpl, but not on Foo, and I don't want to spot all other locations of this problem manually.

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  • How do I dynamically add and remove line items from an ASP.NET MVC view?

    - by Mike Roosa
    I have a PurchaseOrder model: public class PurchaseOrder { public string OrderNumber { get; set; } public string Customer { get; set; } public IList<LineItem> Lines { get; set; } } and a LineItem class: public class LineItem { public string PartNumber { get; set; } public int Quantity { get; set; } } What I want to do is on my view for the PurhcaseOrder Create action, I need a section for line items. The user should be able to add a new line, remove a line, then submit. One caveat is the PartNumber needs to be a dropdown list of valid parts. What can I do to accomplish what I'm looking for?

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  • DataAnnotations: if (valid) => change Property

    - by Karl_Schuhmann
    hi i'm googling around about this problem but i didn't find any usfull about this. I want to deni the set of an property if the Validation per DataAnnotations fails Could you please tell me what i miss in my code? Model Codesnip private string _firstname; public string Firstname { get { return _firstname; } set { _firstname = value; RaisePropertyChanged(() => Reg(() => Firstname)); } } ViewModel Codesnip [Required] [RegularExpression(@"^[a-zA-ZäöüßÄÖÜß''-'\s]{2,40}$")] public string Name { get { return currentperson.Name; } set { currentperson.Name = value; RaisePropertyChanged(() => Reg(() => Name)); } } View Codesnip <TextBox HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" Text="{Binding Firstname,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}"/> any help would be greatly appreciated

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  • Java newbie problem: classes of the same package accessing one another?

    - by HH
    Test.java and SetWord.java belong to the package tools. Test.java needs to access SetWord but an odd error 'cannot find' SetWord appear. The package limits the visibility, it works without 'package tools;' lines. How can I acess the SetWords with Test in the same pkg? In general, how can classes access one another in the same pkg? Test.java package tools; import java.io.*; import java.util.*; public class Test{ public static void main(String[] args) { //IT CANNOT FIND SetWords despite the same folder, why? SetWord sw=new SetWord(); System.out.println(st.set("HELLO)"); } } SetWord.java package tools; import java.io.*; import java.util.*; public class SetWord{ public SetWord(){} public String set(String s) { return s.trim().toLowerCase(); } }

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  • how to close layer that showed in other layer in cocos2d-iphone

    - by yegomo
    I have one layer called alayer, and there is a button called abutton, when click the button, another layer called blayer will show in alayer, not replaceScene, please look at the following code, alayer.m -(void)abuttonclicked:(id)sender { blayer *blayer = [blayer node]; blayer.position = ccp(1,1); [self addChild:blayer]; } blayer.m has a button called bbutton and string value called bstring, I want to click the b button, it will close blayer (remove blayer from alayer), and pass the string value bstring to alayer, please look at following code, -(void)bbuttonclicked:(id)sender { // how can do here to close its self(remove its self from alayer), and pass the bstring to alayer? } thanks. ps. I can use NSUserDefault to pass the string value, but I think it's a bad way to do this, is there another way to pass value?

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  • Some issue with bufferedReader

    - by thetna
    I have a java function as follows: public HashMap<String, ArrayList<Double>> embedWords(BufferedReader buffR1 { ArrayList<String > arrayList = new ArrayList<String>(); arrayList = getWords(buffR1); System.out.println("Word size:"+ arrayList.size()); ArrayList<ArrayList<Double>> arrList = getWordFeature(buffR1); System.out.println("Size of arrList:embedWords:"+arrList.size()); } Here , the problem is , the both of the function getWords and getWordFeatures can't give the size value. When i comment function getWords the function getWordFeature returns non-zero value .But when uncommented , the output is as follows: Word size:15055 Size of arrList:embedWords: 0

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  • Sql Server XML-type column duplicate entry detection

    - by aaaa bbbb
    In Sql Server I am using an XML type column to store a message. I do not want to store duplicate messages. I only will have a few messages per user. I am currently querying the table for these messages, converting the XML to string in my C# code. I then compare the strings with what I am about to insert. Unfortunately, Sql Server pretty-prints the data in the XML typed fields. What you store into the database is not necessarily exactly the same string as what you get back out later. It is functionally equivalent, but may have white space removed, etc. Is there an efficient way to compare an XML string that I am considering inserting with those that are already in the database? As an aside, if I detect a duplicate I need to delete the older message then insert the replacement.

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  • Boost::asio bug in MSVC10 - Failing BOOST_WORKAROUND in ~buffer_debug_check() in buffer.hpp

    - by shaz
    A straight compilation of example http://www.boost.org/doc/libs/1_43_0/doc/html/boost_asio/tutorial/tutdaytime3/src.html results in a runtime null pointer exception. Stack trace points to the buffer_debug_check destructor which contains this comment: // MSVC's string iterator checking may crash in a std::string::iterator // object's destructor when the iterator points to an already-destroyed // std::string object, unless the iterator is cleared first. The test #if BOOST_WORKAROUND(BOOST_MSVC, = 1400) succeeds in MSVC10 and (but) results in a null pointer exception in c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility line 123 _Iterator_base12& operator=(const _Iterator_base12& _Right) { // assign an iterator if (_Myproxy != _Right._Myproxy) _Adopt(_Right._Myproxy->_Mycont); return (*this); } _Right._Myproxy is NULL

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  • Is there such a thing as a C# style extension method in C++ ?

    - by Gary Willoughby
    I'm currently learning C++ and i run into the simple problem of converting an int to a string. I've worked around it using: string IntToString(int Number) { stringstream Stream; Stream << Number; return Stream.str(); } but though it would be more elegant to use something like: int x = 5; string y = x.toString(); but how do i add the toString() method to a built in type? or am i missing something totally fundamental?

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  • Is this bad style of programming(C#) ?

    - by m0s
    Hi, so in my program I have parts where I use try catch blocks like this try { DirectoryInfo dirInfo = new DirectoryInfo(someString); //I don't know if that directory exists //I don't know if that string is valid path string... it could be anything //Some operations here } catch(Exception iDontCareWhyItFailed) { //Didn't work? great... we will say: somethings wrong, try again/next one } Of course I probably could do checks to see if the string is valid path (regex), then I would check if directory exists, then I could catch various exceptions to see why my routine failed and give more info... But in my program it's not really necessary. Now I just really need to know if this is acceptable, and what would a pro say/think about that. Thanks a lot for attention.

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  • C# Inherited member variables behaving undexpectedly

    - by Nilbert
    If I have a class like this: class A { public string fe = "A"; } And a class that inherits from it like so: class B : A { public string fe = "B"; } Visual C++ will tell me that B.fe hides A.fe so I should use the new keyword. So I change class B to look like: class B : A { public new string fe = "B"; } And then I have a function that takes an A (but, by virtue of inheritance, will also take a B) like this: class D { public static void blah(A anAObject) { Console.Writeline(A.fe); } } Even when I pass it an instance of a B object, which it will take without question, it will print "A"! Why is this, and how can I make it work how I want without setting the variable in the constructor?

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  • Why input elements don't render the value passed in ASP.Net MVC?

    - by MediaSlayer
    This post asks this question but doesn't really give an answer, so I thought I would ask the question differently. I have a page that renders a hidden value from the model: <%=Html.Hidden("myName", model.myValue) %> Since I am passing a value in the value parameter, you would think it would output that value, but it doesn't. The code for rendering input fields has the following: string attemptedValue = (string)htmlHelper.GetModelStateValue(name, typeof(string)); tagBuilder.MergeAttribute("value", attemptedValue ?? ((useViewData) ? htmlHelper.EvalString(name) : valueParameter), isExplicitValue); Basically, if the ModelState (which contains posted values) contains a value for the "name" passed, it will use that value instead of your passed value to the helper method. In my case, I updated the model and my updated value wasn't outputted. If I pass a value to a method, I expect that value to be rendered. Am I missing something in this design or is it just wrong?

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  • Conditional Required Attribute for validation

    - by jeriley
    We're trying to get a conditional attribute to work, case in point, there's a boolean (checkbox) that if checked, its related text is required. So, ideally we'd have something like ... public bool Provision { get; set; } [ConditionalRequirement(IsNeededWhenTrue = Provision)] public string ProvisionText { get; set; } Is this even possible? Alternate idea (not as elegant?) public bool Provision2 { get; set; } [PropertyRequired(RequiredBooleanPropertyName = "Provision2")] public string Provision2Text { get; set; } I'd hate to use the magic string method ... but any other ideas?

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  • Displaying text in UILabel in iPhone

    - by SeniorLee
    OK. What's wrong with my code? - (void)viewDidLoad { [super viewDidLoad]; lblResult = [UILabel alloc]; } - (void)viewWillAppear:(BOOL)animated { lblResult.text = @"BlahBlah"; } I linked lblResult to Label object in IB well. But the label only shows the default text. Where's my BlahBlah?? And when the default string I set in the IB actually set to lblResult?? The reason that BlahBlah string is not displyed is I guess because lblResult.text is over-written by default string specified from IB. Just my guess. Can anyone make me clear with that?

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  • Better way of enforcing this template?

    - by Dennis Ritchie
    Currently, I have a function template like this that converts a vector into a string (just a natural string, separating the elements with a comma): //the type T must be passable into std::to_string template<typename T> std::string vec_to_str(const std::vector<T> &vec); As you can see, this is only meant for vectors whose elements can be passed into the built-in std::to_string function (such as int, double, etc.) Is it considered a good practice to document with comments the allowed T? If not, what should I do? Is it possible to enforce this in a better way?

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  • How to encode and decode chinese characters?

    - by melaos
    I've try googling around but wasn't able to find what charset that this text below belongs to: 具有éœé›»ç”¢ç”Ÿè£ç½®ä¹‹å½±åƒè¼¸å…¥è£ç½® But putting <meta http-equiv="Content-Type" Content="text/html; charset=utf-8"> and keeping that string into a html file i was able to view the chinese character wording properly. which is: ??????????????? So my question is: what tools can i use to detect the character set of those text? And how do i convert/encode/decode them properly in C#? Updates: Added some test code [TestMethod] public void TestMethod1() { string encodedText = "具有éœé›»ç”¢ç”Ÿè£ç½®ä¹‹å½±åƒè¼¸å…¥è£ç½®"; Encoding encoder = new UTF8Encoding(); byte[] postBytes = encoder.GetBytes(encodedText); postBytes = UTF8Encoding.Convert(Encoding.UTF8, Encoding.Unicode, postBytes); string decodedText = Encoding.Unicode.GetString(postBytes); Assert.AreNotEqual(encodedText, decodedText); } thanks

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