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  • Can a dropdown box using PHP / MySQL automatically select what was last saved in the database with it?

    - by wertz8090
    I am currently working on trying to get a dropdown box to display the most recently saved field each time I open a page for editing an item in an inventory. For example, let's say that my dropdown box selections are Iron, Copper, Gold, Silver, Titanium. The first time the dropdown box loads, I would like it to load in that order (the default order that I set it to). However, once a user submits a form that specifies a selection, I would like that selection to appear as the new default for the dropdown box (for example, if the user picks Gold, Gold will now display as the default). However - the new default that is selected and submitted can only appear for those fields which it is saved under (for example, since the user selected Gold, their preference is now saved as Gold and will appear as such under the field Necklace - however, Gold should not be the default for the fields Ring, Bracelet, and Earring when I open a page to view them). Basically, I need a dropdown box that can save the option of the latest selection on a page after the form is submitted, while at the same time making sure not to affect the default order of the dropdown box across other pages. Your help is much appreciated.

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  • How to call operator<< on "this" in a descendant of std::stringstream?

    - by romkyns
    class mystream : public std::stringstream { public: void write_something() { this << "something"; } }; This results in the following two compile errors on VC++10: error C2297: '<<' : illegal, right operand has type 'const char [10]' error C2296: '<<' : illegal, left operand has type 'mystream *const ' Judging from the second one, this is because what this points at can't be changed, but the << operator does (or at least is declared as if it does). Correct? Is there some other way I can still use the << and >> operators on this?

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  • If I cast an IQueryable as an IEnumerable then call a Linq extension method, which implementation gets called?

    - by James Morcom
    Considering the following code: IQueryable<T> queryable; // something to instantiate queryable var enumerable = (IEnumerable<T>) queryable; var filtered = enumerable.Where(i => i > 3); In the final line, which extension method gets called? Is it IEnumerable<T>.Where(...)? Or will IQueryable<T>.Where(...) be called because the actual implementation is still obviously a queryable? Presumably the ideal would be for the IQueryable version to be called, in the same way that normal polymorphism will always use the more specific override. In Visual Studio though when I right-click on the Where method and "Go to Definition" I'm taken to the IEnumerable version, which kind of makes sense from a visual point-of-view. My main concern is that if somewhere in my app I use Linq to NHibernate to get a Queryable, but I pass it around using an interface that uses the more general IEnumerable signature, I'll lose the wonders of deferred database execution!

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  • How do I call Matlab in a script on Windows?

    - by Benjamin Oakes
    I'm working on a project that uses several languages: SQL for querying a database Perl/Ruby for quick-and-dirty processing of the data from the database and some other bookkeeping Matlab for matrix-oriented computations Various statistics languages (SAS/R/SPSS) for processing the Matlab output Each language fits its niche well and we already have a fair amount of code in each. Right now, there's a lot of manual work to run all these steps that would be much better scripted. I've already done this on Linux, and it works relatively well. On Linux: matlab -nosplash -nodesktop -r "command" or echo "command" | matlab -nosplash -nodesktop ...opens Matlab in a "command line" mode. (That is, no windows are created -- it just reads from STDIN, executes, and outputs to STDOUT/STDERR.) My problem is that on Windows (XP and 7), this same code opens up a window and doesn't read from / write to the command line. It just stares me blankly in the face, totally ignoring STDIN and STDOUT. How can I script running Matlab commands on Windows? I basically want something that will do: ruby database_query.rb perl legacy_code.pl ruby other_stuff.rb matlab processing_step_1.m matlab processing_step_2.m # etc, etc. I've found out that Matlab has an -automation flag on Windows to start an "automation server". That sounds like overkill for my purposes, and I'd like something that works on both platforms. What options do I have for automating Matlab in this workflow?

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  • Decorator that can take both init args and call args?

    - by digitala
    Is it possible to create a decorator which can be __init__'d with a set of arguments, then later have methods called with other arguments? For instance: from foo import MyDecorator bar = MyDecorator(debug=True) @bar.myfunc(a=100) def spam(): pass @bar.myotherfunc(x=False) def eggs(): pass If this is possible, can you provide a working example?

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  • How can I call a COM component using JavaScript in Mozilla?

    - by kumar
    I am calling a COM component in IE. Here is the code <object align="left" classid="CLSID:22D6F312-B0F6-11D0-94AB-0080C74C7E95" id="Winvideo-Silverlight2RTW-Hypervideo-Part1-WMVa.wmv"> <param name="FileName" value="Winvideo-Silverlight2RTW-Hypervideo-Part1-WMVa.wmv"> <param name="AutoRewind" value="true"> <param name="AutoStart" value="false"> <param name="ClickToPlay" value="true"> <param name="Mute" value="false"> <param name="ShowControls" value="true"> <param name="ShowDisplay" value="true"> <param name="ShowTracker" value="true"> <param name="PlayCount" value="1"> </object> It is working fine in IE, but not in Mozilla Firefox.

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  • Which do I select - Windows Azure or Amazon EC2 - for hosting unmanaged C++ code?

    - by sharptooth
    We have a server solution written entirely in unmanaged Visual C++. It contains complicated methods for really heavy data processing. The whole thing contains millions lines of code, so rewritning it all in some other language is not an option. We could write some extra code or make isolated changes, but rewriting everything is out of the question. Now we'd like to put it on a cloud. Which platform do we choose - Amazon EC2 or Windows Azure - and why?

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  • What's the difference? eval() or just call the function directly?

    - by question_about_the_problem
    I'm not php expert and I don't know what's the difference(1) between a and b. a.)eval('return "'.base64_decode("encoded_text").'";') b.)base64_decode("encoded_text") -I THINK, a is php code and b is just string. And my other question is: What is the difference(2) between c and d? c.)eval('return "'.base64_decode("encoded_text").'";') d.)eval(base64_decode("encoded_text")) So I have 2 questions. Who can answer/help ? Thanks.

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  • How to pass a method as callback to a Windows API call?

    - by Heinrich Ulbricht
    Hi, I'd like to pass a method of a class as callback to a WinAPI function. Is this possible and if yes, how? Example case for setting a timer: TMyClass = class public procedure TimerProc(Wnd:HWND; uMsg:DWORD; idEvent:PDWORD; dwTime:DWORD); procedure DoIt; end; [...] procedure TMyClass.DoIt; begin SetTimer(0, 0, 8, @TimerProc); // <-???- that's what I want to do (last param) end; Thanks for your help! Edit: The goal is to specify a method of this class as callback. No procedure outside the class.

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  • Is it bad practice to select upstream servers based upon the HTTP method?

    - by PartlyCloudy
    I'm wondering if it is bad practice to have a reverse proxy that selects the upstream server depending on the HTTP method used? The background is that I have an abitrary web server that handles POST requests with some logic behind. The same resources also contain static content, that can be retrieved using GET. After some benchmarking I realized that nginx would handle the static content way faster than my abitrary web server doing this. I checked the option to forward incoming requests internally using nginx, which is feasible. But this would lead to the fact that different servers would serve a distinct resource, only depending on issuing a GET or POST, including different header fields.

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  • Can one extract model fit parameters after a ggplot stat_smooth call?

    - by Alex Holcombe
    Using stat_smooth, I can fit models to data. E.g. g=ggplot(tips,aes(x=tip,y=as.numeric(unclass(factor(tips$sex))-1))) +facet_grid(time~.) g=g+ stat_summary(fun.y=mean,geom="point") g=g+ stat_smooth(method="glm", family="binomial") I would like to know the coefficients of the glm binomial fits. I could re-do the fit with dlply and get the coefficients with ldply, but I'd like to avoid such duplication. Calling str(g) reveals the hierarchy of objects that ggplot creates, perhaps there's some way to get to the coefficients through that?

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  • How do I call this function in CodeIgniter controller?

    - by Jason Shultz
    I've got this code, but I'm not sure I make it work: /** * Function: youtube data grabber * * @description : * @param $ : video code, url type (embed/url) * @return : data array * @author : Mamun. * @last -modified-by: Mamun. */ if (! function_exists('youtube_data_grabber')) { function youtube_data_grabber($video_code, $link_type = "embed") { if ($video_code != '') { if ($link_type == "embed") { $splited_data = explode("=",$video_code); $video_unique_code = substr(strrchr($splited_data[4],"/"),1,-strlen(strrchr($splited_data[4],"&"))); } else if ($link_type == "url") { $splited_data = explode("=",$video_code); $video_unique_code = substr($splited_data[1],0,-strlen(strrchr($splited_data[1],"&"))); } else { return; } // set feed URL $feedURL = 'http://gdata.youtube.com/feeds/api/videos/'.$video_unique_code; // read feed into SimpleXML object $sxml = simplexml_load_file($feedURL); return $sxml; } } } // End Youtube Function I'm not sure how to activate it is what I'm trying to say. I placed it in the controller and it's within a function for one of my pages. I don't have any syntax errors. I just don't know how to wake it up and make it work. I thought I could just put youtube_data_grabber('http://www.youtube.com/watch?v=LAcrFym10ZI', 'url'); but that didn't work. I got the code from here: http://bit.ly/b7YnDt and I have the zend functionality working. I tested it earlier and had no errors. I'm just having trouble with this youtube part. Any ideas?

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  • WP7 - attempt to select and use application static resource in codebehind not working (no resources found).

    - by pearcewg
    With Windows Phone 7, I'm attempting to dynamically add controls to and object in codebehind, and apply a StaticResource to the new control. Xaml file sample: <phone:PhoneApplicationPage.Resources> <ControlTemplate x:Key="PushpinControlTemplateBlue" TargetType="my2:Pushpin"> ... </ControlTemplate> </phone:PhoneApplicationPage.Resources> Codebehind sample: >Pushpin myPush = new Pushpin(); >myPush.Location = new GeoCoordinate(52.569593, -0.9261151403188705); >myPush.Content = ""; >myPush.Template = (ControlTemplate)Application.Current.Resources["PushpinControlTemplateBlue"]; >mapMain.Children.Add(myPush); When I debug, and look at "Application.Current.Resources", there are no items in the collection, so the item is added to the controls list, but doesn't show up because it has no content. Is there something simple I'm doing wrong? How do I correctly access the resource?

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  • How to make every Class Method call a specified method before execution?

    - by norm
    I want to make my Python Class behave in such a way that when any Class method is called a default method is executed first without explicitly specifying this in the called Class. An example may help :) Class animals: def _internalMethod(): self.respires = True def cat(): self._internalMethod() self.name = 'cat' def dog(): self._internalMethod() self.name = 'dog' I want _internalMethod() to be called automatically when any method is called from an instance of animals, rather than stating it explicitly in the def of each method. Is there an elegant way to do this? Cheers,

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  • How to fix the size of the <html:select> combo box (contents may be larger but the combo size should

    - by DSB
    Hello all , How to fix the size of the combo box (contents may be larger but the combo size should be fixed).Now my combo size is changed based on the items in the combo. I'm trying to get something similar to the yahoo sign up page security Question combo: https://edit.yahoo.com/registration?.src=fpctx&.intl=in&.done=http://in.yahoo.com/ my code: Text which decides the size of the combo

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  • what happens when I don't manage to call `recv` fast enough?

    - by amn
    Hi all, I want to account for a possible scenario where clients of my TCP/IP stream socket service send data to my service faster than it manages to move the data to its buffers (I am talking about application buffers, naturally) with recv and work with it. So basically, what happens in such scenarios? Obviously, some sort of service beneath my service which is a user application, has to receive incoming stream and store it somewhere until I issue 'recv', right? Most certainly the operating system. I don't want to re-open old questions, but I can't seem to find an answer to this seemingly obvious one?

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