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• remove field name from object validation message

  - by Colin G

  I've got a simple active record validation on an object using this within a form: form.error_messages({:message => '', :header_message => ''}) This in turn outputs something like "FieldName My Custom message" What i need to do is remove the field name from the error message but leave my custom message. Can anyone point me in the right direction for this.

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• Why abstract classes necessary?

  - by bala3569

  1.What is the point of creating a class that can't be instantiated? Most commonly to serve as a base-class or interface (some languages have a separate interface construct, some don't) - it doesn't know the implementation (that is to be provided by the subclasses / implementing classes) 2.Why would anybody want such a class? For abstraction and re-use 3.What is the situation in which abstract classes become NECESSARY?can anyone brief it with an example?

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• x, y, width, height of actual chart

  - by czerasz

  I wahnt to place a container (alpha red) on top of my chart like on the image. How to get the x, y (point A), width, height of this area? http://img88.imageshack.us/img88/4558/flexchart01.png

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• jQuery apply functionality only to class and parent elements.

  - by kylex

  I have the following list: <ul> <li class="topCurrent">One <ul> <li>One-1 <ul> <li>One-1.1 <ul> <li class="current">One-1.1.1 <ul> <li>One-1.1.1.1</li> <li>One-1.1.1.2</li> <li>One-1.1.1.3</li> </ul> </li> <li>One-1.1.2</li> </ul> </li> <li>One-1.2</li> </ul> </li> <li>One-2</li> <li>One-3</li> </ul> </li> <li>Two <ul> <li>Two-1</li> <li>Two-2</li> </ul> </li> Using the following jQuery: $("ul li ul").hide(); $("ul li").hoverIntent( function(){ $(this).children('ul').slideDown('fast'); }, function(){ $(this).children('ul').slideUp('fast'); } ); What this does is hide all of the ul below the top level ul until there is a hover over it. What I would like to do is this: If an li has a class="current" I would like that structure to be open up until the point that current is hit. It would still allow the ul below it to be displayed on a hover, as well as any other ul's, but at no point would the parents of class="current" be hidden. Suggestions? This problem has been driving me crazy. Thanks!

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• Looking for trustworthy JPEG batch converter/resizer

  - by Simon_Weaver

  I have a batch of PNG files that I need to convert to JPEG. I'm looking for a free trustworthy utility that will give me the most optimal possible JPEGs. I've found some paid utilities and i HAVE Photoshop, but I want something dedicated that is made for the task and I dont want to accidentally download spy ware. I'm really surprised not to find this question already on StackOverflow, but please point me in the direction of any similar questions if they exist.

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• Mouse coordinates on Screen

  - by dineshrekula

  How to track the mouse position on the screen regardless of application.i.e. Whenever the user clicks or select something with mouse in any application, i want to display my own menu at that point itself. Is there any way to get mouse position on the screen using c#?

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• Programatically building an MSI

  - by pm_2

  I would like to create a C# program that creates an MSI based on a number of parameters. For example, based on user settings, certain files would be included, or runtime parameters set. Can anyone point me towards any documentation that might help, or give me an idea where I might start with something like this?

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• How do you create domain.com/?stringhere without a .php extension

  - by matt

  I want to create a link like the following: http://www.myurl.com/?IDHERE What i want to be able to do is be able to goto the above link, and then pull whats after the ? (in this case IDHERE) and be able to use that information to perform a MySQL lookup and return a page. Can anyone point me into the right direction? please know this is using PHP not ASP

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• [C++] Is it possible to roll a significantly faster version of sqrt

  - by John

  In an app I'm profiling, I found that in some scenarios this functions are able to take over 10% of total execution time. I've seen discussion over the years of faster sqrt implementations using sneaky floating-point trickery, but I don't know if such things are outdated on modern CPUs. MSVC++ 2008 compiler is being used, for reference... though I'd assume sqrt is not going to add much overhead though.

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• Lambda Expressions for a 5th Grader

  - by Randy Minder

  If you had to explain Lambda expressions to a 5th grader, how would you do it? And what examples might you give, or resources might you point them to? I may be finding myself in the position of having to teach this to 5th grade level developers and could use some assistance. Thanks very much.

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• Qt - controlling drag behaviour

  - by bullettime

  Suppose I want my draggable widget to move differently than just staying under my cursor while being dragged. For instance, having the widget move only in one axis, or have the widget move double the distance between the cursor and the drag starting point. Which method should I override to define this kind of behaviour?

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• When using Sessions is bad thing, and whats wrong with it?

  - by Amr ElGarhy

  I know that in community server which means that you can't use Sessions, and few years ago i remember i was working on a website where we were not allowed to use sessions. In my point of view sessions are a very helpful tool if we managed how to use the right way, but is using session variable in a website is something bad, when its bad and when its not?

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• Converting a string into a double

  - by Koning Baard

  I am trying to convert a string (const char* argv[]) to a double precision floating point number: int main(const int argc, const char *argv[]) { int i; double numbers[argc - 1]; for(i = 1; i < argc; i += 1) { /* -- Convert each argv into a double and put it in `number` */ } /* ... */ return 0; } Can anyone help me? Thanks

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• Simple check for SELECT query empty result

  - by den-javamaniac

  Hi. Can anyone point out how to check if a select query returns non empty result set? For example I have next query: SELECT * FROM service s WHERE s.service_id = ?; Should I do something like next: ISNULL(SELECT * FROM service s WHERE s.service_id = ?) to test if result set is not empty?

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• Show information over image on rollover

  - by Chris

  I want to be able to show information (HTML basically) over an image when the mouse rolls over the image... I know there is a .hover() jQuery function but am unsure how to use it to get the desired effect. Ideally when a user hovers over an image it would "grey out" (e.g. layer of 50% opacity black) with some HTML like a title etc etc. Can someone point me in the right direction or provide sample code Thanks

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• Silverlight and MV(VM) Pattern - No Code-Behind - Is this possible?

  - by user118190

  I am working on Silverlight 3.0 and currently using code-behind in my Views. I would like to implement the MV(VM) pattern into my project as the project is growing. I have seen some WPF projects where the code-behind has NO CODE except for the InitializeComponent method, which I believe is the right way to go and just looks clean. Is this possible in Silverlight 3.0, that is, no code-behind? Can anyone point me to some good Silverlight (3.0) MV(VM) tutorials / articles?

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• Formating issue in IE6

  - by user354534

  i All, I have deployed my site on internet and I am facing some formating issues, it's working fine in IE8, Firefox and Chrome but not in IE6. I have used asp.net 3.5, please let me know where I have done mistakes. http://www.anujtripathi.net/AboutMe.aspx and the same in image gallery menu, as I don't have 10 reputation point I can't paste another URL here. Thanks

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• C/C++ RPC Tutorial for Linux

  - by devin

  Can someone point me to a decent RPC tutorial for (or books) linux, like in this post. I tried looking around myself, I've only found tutorials that are really old. Thanks

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• How many integers 0 < n < 10E18 have the property that the sum of the digits of n equals the sum of digits of 137n?

  - by Allen

  I'm stumped on a project Euler question, #290. Can anybody point me in the right direction? i = 0 o = 0 p = 1 while i < 10 ** 18 j = i.to_s.split('').map(&:to_i) k = j.inject(:+) l = 137 * i m = l.to_s.split('').map(&:to_i) n = m.inject(:+) if k == n o += 1 end if i == (9 * 10 ** p) * (10 ** p) i += 18 p += 1 o += 1 else i += 9 end end puts o

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• How do you revert (roll back) to an earlier version of a committed file in CVS

  - by CodeLizard

  Let's take for example a single file committed in CVS with the following history. test.cpp rev 1.1 rev 1.2 rev 1.3 How do I revert to rev 1.2 discarding the changes in 1.3 and then continue to make modification from that point on?

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• Where can I find the order of ListView events?

  - by Abe Miessler

  I was wondering specifically about whether ItemCreated or ItemBound happens first but I can't seem to find any information on the order that ListView events fire. Can anyone point me to a resource for this information? Note: this is for the System.Web.UI.WebControls.ListView

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• ASP.NET MVC subdomain shows folder name

  - by Paul

  Hi, I'm using godaddy shared hosting, with IIS7, Integrated mode, and published up a bog standard MVC2 app to dev.lazygekko.com created with Visual Web Developer 2010. It all works, however when any of the links are clicked, they point to dev.lazygekko.com/dev/..., dev being the folder it is pointing at. Can anyone shed some light on what I may be doing wrong? Many thanks.

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• Parsing values from XML into types of Type

  - by DrLazer

  check this out Type configPropType = configurableProp.getPropertyType(); string attValue = xmlelement.GetAttribute(configurableProp.getName()); configProps[configurableProp.getName()] = attValue; At the point where I am setting the value that got read in from XML it turns out the assigning object needs to be parsed to the correct type for it to work. I need something like. configProps[configurableProp.getName()] = configPropType.ParseToThisType(attValue); Looked around on msdn but its a very confusing place.

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• C++ code generation with Python

  - by norapinephrine

  Can anyone point me to some documentation on how to write scripts in Python (or Perl or any other Linux friendly script language) that generate C++ code from XML or py files from the command line. I'd like to be able to write up some xml files and then run a shell command that reads these files and generates .h files with fully inlined functions, e.g. streaming operators, constructors, etc.

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• change background of an ImageView (the old image stays there!)

  - by nourdine

  how can I change the background of an ImageView from java? I have an ImageView and at a certain point I need to change the image that it displays (set in the styles). I tried to do it like this: placeHolder.setImageDrawable(myDrawb); but it looks like the old image remains there and it is partially covered but the new one (which in my case has different shape). hope you guys can help! cheers

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