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  • Haskell Input & Passing Values to Functions

    - by Pradeep
    putStrLn "Enter the Artist Name" art <- getLine putStrLn "Enter the Number of CD's" num <- getLine let test= buyItem currentStockBase art num printListIO (showcurrentList test) the values i have to pass for buyItem is buyItem currentStockBase "Akon" 20 but i want to send "Akon" to art and for 20 i want to send num it gives me this error ERROR file:.\Project2.hs:126 - Type error in application *** Expression : buyItem currentStockBase art num *** Term : num *** Type : [Char] *** Does not match : Int please help me

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  • typedef and operator overloading in C

    - by jocapco
    Suppose I typedef an integer or integer array or any known type: typedef int int2 Then I overload operator * for int2 pairs, now if I initialize variables a and b as int. Then will my * between a and b be the overloaded * ? How do I achieve overloading an int and yet also use * for int the way they are. Should I create a new type?

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  • Template function in define

    - by Ockonal
    Hello, I have some template function and I want to call it using define in c++: #define CONFIG(key, type, def) getValue<type>(key, def); Of course, it won't work. Could I make something like this?

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  • jquery ajax: headers seem to not be working

    - by Will
    hello, i am trying to get the headers of an ajax request i made through jquery $.get(url, function(response, textStatus, headers ) { console.log("Response: %o", response); console.log("TextStatus: %o", textStatus); console.log("Request: %o", headers); } ); this does not seem to be working however: the response and textstatus are printing, but the "headers" object seems to be undefined i simply want to check if it is what i expect (content type='excel', etc) or if the response type is html, i can assume the page i was calling is an error

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  • In ActionScript3 runtime, is there a way to get a list of all static members from a Class

    - by ty
    Let's say we have following class public class PlayerEvent extends Event { public static const PLAYER_INIT:String = "playerInit"; public static const PLAYER_MOVE:String = "playerMove"; public static const PLAYER_USE_SKILL:String = "playerUseSkill"; public function PlayerEvent(type:String) { super(type, false, true); } } } In Flash Player runtime, is there a way I can get a list of all the static members of lass PlayerEvent. Something like: trace(PlayerEvent.staticMethods) // ["PLAYER_INIT", "PLAYER_MOVE", "PLAYER_USE_SKILL"]...

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  • C# equivalent of typeof for fields

    - by rwallace
    With reflection, you can look up a class from a string at run time, but you can also say typeof(Foo) and get compile time type checking, auto completion etc. If what you want is a field not a class, you can look it up from a string at runtime, but if you want compile time type checking etc., is there anyway to say something like fieldof(Foo.Bar)? I know the name of both the class and the field in advance, and I want to be able to refer to the field at compile time rather than with a run-time string lookup.

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  • function_exists php

    - by user527800
    Hi all I'm trying to write a function that could receive it's second arg a name of a function. In order to validate function's name (that will be used in an eval statement) I use function_exists such as: if(function_exists($type)){ $toEval= $type.'(\''.$file.'\');'; }else{ But if the arg sent is include or require (with 'once' variations) this code fails (function_exists returns false). How could this be fixed? Thanks, Alex

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  • troubles creating a List of doubles from a list of objects

    - by Michel
    Hi, i have a list with objects. The object has a property 'Sales' which is a string. Now i want to create a list of doubles with the values of all objects' 'Sales' properties. I tried this: var tmp = from n in e.Result select new{ Convert.ToDouble ( n.Sales) }; but this gives me this error: Error 106 Invalid anonymous type member declarator. Anonymous type members must be declared with a member assignment, simple name or member access.

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  • Generic object comparison diff routine

    - by MicMit
    The question stems from database tables comparison. Let's say we put left row in the instance Left and the right one into instance Right of the same type. And we'got many tables and respective types. How to implement more or less generic routine resulting in a collection of diffs e.g. propertyName , leftValue , rightValue for each such a pair of instances of the same type.

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  • MySQL: How to do a conditional update?

    - by Tom
    Hi, I'm trying to a create an update statement along the following lines: TABLE car: id | owner_id | type | status An owner can have multiple cars. UPDATE car c SET c.type = 1 WHERE c.owner_id IN ($ids) AND c.status = [1 IF IT EXISTS, ELSE 0] $ids is reasonably small (under 50 values). It seems simple but I can't seem to get my head around it because I can't use a SELECT subquery with an UPDATE to the same table. Anyone? Thanks

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  • How to pass the parameter to the function

    - by avaro
    Hi, I have stored procedure that takes input parameter of table type. procedure test( name samptable type); My table has the structure like table: samptable( name chracter varying; address text[]; ) So how shoul i pass the values to the function to fill the table.

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  • Results page in other window.

    - by xRobot
    I have this simple form: <form method="post" action"."> <input type="text" name="title"> <input type="submit" name"send"> </form> I want that when a user click on submit, then will be open another window of browser with the results. Is it possible ?

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  • dictionary/map/key-value pairs data structure in C

    - by morgancodes
    How does one construct and access a set of key-value pairs in C? To use a silly simple example, let's say I want to create a table which translates between an integer and its square root. If I were writing javascript, I could just do this: var squareRoots = { 4: 2, 9: 3, 16: 4, 25: 5 } and then access them like: var squareRootOf25 = squareRoots[5] What's the prettiest way to do this in C? What if I want to use one type of enum as the key and another type of enum as the value?

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  • Problem with generics

    - by jess
    I have this code in base class protected virtual bool HasAnyStuff<TObject>(TObject obj) where TObject:class { return false; } In child class I am overriding protected override bool HasAnyStuff<Customer>(Customer obj) { //some stuff if Customer.sth etc return false; } I am getting this error '''Type parameter declaration must be an identifier not a type''' What is it I am doing wrong here?

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  • How to store array in session in asp.net mvc?

    - by mary
    Can you please tell me how to store an array in session and how to retrieve that array from session? I am trying to store one array of type Double and assigning values of the same type but it is showing me an error so please can anyone tell me how to assign values to the array which is in session? Thank You

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  • C# (non-abstract) class to represent paths

    - by user289770
    I'm looking for a C# class that represents a file system path. I would like to use it (instead of strings) as the data type of variables and method arguments (top reasons: type safety, concat-proof, logical comparisons). System.IO.Path provides most of the functionality I want, but it is abstract. System.IO.FileInfo, as I understand, performs IO operations to do its job. I only want a wrapper for the path string. Thanks!

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  • When to Use Properties & When to Use Methods?

    - by DaveDev
    Hi Guys I was looking at the following line of code foreach (PropertyInfo prop in t.GetProperties()) and I noticed that tprovides a method to return the type's properties instead of a property like t.Properties This makes me wonder why sometimes people use properties to make a type's data avilable and other times there's a method provided? Is there some logic behind the decision? Thanks Dave

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  • generating random enums

    - by null_radix
    How do I randomly select a value for an enum type in C++? I would like to do something like this. enum my_type(A,B,C,D,E,F,G,h,J,V); my_type test(rand() % 10); But this is illegal... there is not an implicit conversion from int to an enum type.

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  • really basic cPanel question?

    - by Haroldo
    I'm trying to install imageMagick but i've got practically zero server knowledge, i don't get what this means: You can easily install Imagemagick on a cPanel by using cPanel script. /scripts/installimagemagick will do it for you. what is this /scripts business, where do i type it? do i type it? what's this all about?!!! http://geobaby.in/installing-imagemagick-on-a-cpanel-server/

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  • [Linux] Incremental search on command line?

    - by florianbw
    I'd like to write small scripts which feature incremental search (find-as-you-type) on the command line. Use case: I have my mobile phone connected via USB, Using gammu --sendsms TEXT I can write text messages. I have the phonebook as CSV, and want to search-as-i-type on that. What's the easiest/best way to do it? It might be in bash/zsh/perl/python or any other scripting language. Thanks!

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  • Pass data to another page

    - by user2331416
    I am trying to pass some data from one page to another page by using jquery but it dose not working, below is the code which I want to click the text in source page and the destination page will hide the current text. Source page: <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <script type="text/javascript"> $(function () { $("a.pass").bind("click", function () { var url = "Destination.html?name=" + encodeURIComponent($("a.pass").text()); window.location.href = url; }); }); </script> </head> <body> <a class="pass">a</a><br /> <a class="pass">b</a><br /> <a class="pass">c</a><br /> <a class="pass">d</a> </body> </html> Destination page: <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <script type="text/javascript"> var queryString = new Array(); $(function () { if (queryString.length == 0) { if (window.location.search.split('?').length > 1) { var params = window.location.search.split('?')[1].split('&'); for (var i = 0; i < params.length; i++) { var key = params[i].split('=')[0]; var value = decodeURIComponent(params[i].split('=')[1]); queryString[key] = value; } } } if (queryString["name"] != null) { var data = queryString["name"] $("p.+'data'").hide(); } }); </script> </head> <body> <p class="a">a</p> <p class="b">b</p> <p class="c">c</p> <p class="d">d</p> </body> </html> Please Help.

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