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  • question regarding rails framework code

    - by Joseph Misiti
    I noticed that the code in the rails framework is using the following convention all over the place: class SomeClass class << self def some function end end end rather than class SomeClass end def SomeClass.function end and class SomeClass def self.somefunction end end What is the reason for this design choice? They all seem to accomplish them same thing

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  • Removing characters from a alphanumeric field SQL

    - by LS
    Im moving data from one table to another using insert into. in the select bit need to transfer from column with characters and numerical in to another with only the numerical. The original column is in varchar format. original column - ABC100 XYZ:200 DD2000 Wanted column 100 200 2000 Cant write a function because cant have a function in side select statement when inserting

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  • How to hide jquery ui slider on blur?

    - by Leon
    I have an image that opens ui slider div on click and allows users to set value by draging handle. What Im trying to do now is hide that handle when user click anywhere else on the page but regular .blur event doesn't seem to work. $("#openPriceToSliderGif").click(function(){ $("#slider-vertical").show(); $("#slider-vertical").focus(); }); $("#slider-vertical").blur(function () { $("#slider-vertical").hide(); });

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  • Doctrine2 update both sides of association

    - by orourkedd
    I'm using this to update both sides of an association but want to know if there is a more efficient way to do this. In this case, it is a self-referencing OneToMany parent/child association: public function setParent(Node $parent, $inverse = true) { $this->parent = $parent; if($inverse) $parent->addChild($this, false); } public function addChild(Node $child, $inverse = true) { if(!$this->children->contains($child)) { $this->children[] = $child; if($inverse) $child->setParent($this, false); } }

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  • Git repo planning questions

    - by masonk
    At work, development uses perforce to handle code sharing. I won't say "revision control", because we aren't allowed to check in changes until they are ready for regression testing. In order to get my personal change sets under revision control, I've been given the go-ahead to build my own git and initialize the client view of the perforce depot as a git repo. There are some difficulties in doing this, however. The client view lives in a subfolder of ~, (~/p4), and I want to put ~ under revision control as well, with its own separate history. I can't figure out how to keep the history for ~ separate from ~/p4 without using a submodule. The problem with a submodule is that it looks like I have to go make a repository that will become the submodule and then git submodule add <repo> <path>. But there is nowhere to make the submodule's repository except in ~. There seems to be no safe place to create the initial client view of the depot with git p4 clone. (I'm working off of the assumption that initing or cloning a repo into a subdirectory of a git repo is not supported. At least, I can find nothing authoritative on nested git repos.) edit: Is merely ignoring ~/p4 in the repo rooted at ~ enough to allow me to init a nested repo in ~/p4? My __git_ps1 function still thinks I'm in a git repository when I visit an ignored subdirectory of a git repo, so I'm inclined to think not. I need the "remote" repository created by git p4 sync to be a branch in ~/p4. We are required to keep all of our code in ~/p4 so that it doesn't get backed up. Can I pull from a "remote" branch that is really a local branch? This one is just for convenience, but I thought I could learn something by asking it. For 99% of the project, I just want to start the with the p4 head revision as the inital commit object. For the other 1%, I would like to suck down the entire p4 history so that I can browse it in git. IOW, after I'm done initalizing it, the initial commit of remotes/p4/master branch will contain: revision 1 of //depot/prod/Foo/Bar/* revision X of other files in //depot/prod/*, where X is the head revision and the remotes/p4/master branch contains Y commits, where Y is the number of changelists that had a file in //depot/prod/Foo/Bar/*, with each commit in the history corresponding to one of those p4 changelists, and HEAD looking like p4's head.

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  • invalid conversion from ‘float**’ to ‘const float**’

    - by Omry
    I have a function that receives float** as an argument, and I tried to change it to take const float**. the compiler (g++) didn't like it and issued : invalid conversion from ‘float**’ to ‘const float**’ this makes no sense to me, I know (and verified) that I can pass char* to a function that takes const char*, so why not with const float** ?

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  • D3.js transition callback on frame

    - by brenjt
    Does anyone know how I could accomplish a per frame callback for a transition with D3. Here is and example of what I am doing currently. link.transition() .duration(duration) .attr("d", diagonal) .each("end",function(e) { if(e.target.id == current) show_tooltip(e.target) }); This currently calls the anonymous function for each element at the end of the animation. I would like to call it for every frame.

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  • $.ajax ColdFusion cfc JSON Hello World

    - by cf_PhillipSenn
    I've simplified this example as much as I can. I have a remote function: <cfcomponent output="false"> <cffunction name="Read" access="remote" output="false"> <cfset var local = {}> <cfquery name="local.qry" datasource="myDatasource"> SELECT PersonID,FirstName,LastName FROM Person </cfquery> <cfreturn local.qry> </cffunction> </cfcomponent> And using the jQuery $.ajax method, I would like to make an unordered list of everyone. <!DOCTYPE HTML> <html> <head> <script src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load("jquery", "1"); </script> <script type="text/javascript"> jQuery(function($){ $.ajax({ url: "Remote/Person.cfc?method=Read&ReturnFormat=json", success: function(data){ var str = '<ul>'; // This is where I need help: for (var I=0; I<data.length; I++) { str += '<li>' + I + data[I][1]+ '</li>' } str += '</ul>'; $('body').html(str); }, error: function(ErrorMsg){ console.log("Error"); } }); }); </script> </head> <body> </body> </html> The part where I'm lost is where I'm looping over the data. I prefer to the use jQuery $.ajax method because I understand that $.get and $.post don't have error trapping. I don't know how to handle JSON returned from the cfc.

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  • How to dynamic call property on javascript object with jQuery

    - by Massimo Ugues
    Hallo all. I got a javascript object with some propeties let's say function Animal() { this.id; this.name; I need to call id function in a dynamic way to get and set its value: something like this Animal animal = new Animal(); var propertyName = "id"; animal.+propertyName = "name"; Is there an elegant way to do it? With jQuery? Kind regards Massimo

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  • Programming a windows service

    - by xarzu
    I have started prgramming a windows service. I have added a notify icon from the toolbox. It has the small notify icon that appears in the systray as a member of those icons. It works so far. So far I have a blank form. I have used the DoubleClick for the notifyIcon to bring up the form (I will use the form for something later). Now I have a list of things I want to accomplish to make this work like a true windows service. First of all, if possible, I owuld like to remove the maximize and cancel button on the form. Most windos service apps that I have seen offer the ability to close the app by right-mouse-button clicking on the notify icon which brings up a menu of options. I see in the properties of the form under Misc there is an CancelButton. But I do not see how do deactivate it. In the Properties of the forum I see under Window Style there is a ControlBox option that, if I turn to false, all three buttons, (minimize, maximize and cancel) go away. These are not what i am looking for. I would not like the option for them to resize, maximize or close the form here. I suspect people will close the box intending to make the box go away while still wanting the app to run. Under the "Focus" caption in Properties, there id "Deactivate". I have created my own event/method/function for this and in debug I noticed that when you click on the x-box in the upper right corner, this function is called. The problem is that after the function is over, the app closes anyway. How do I over-ride this function? Secondly, how do you catch the right button click event on the notify icon in the systray? I can see how to create events for "Click" and "MouseClick" etc. but how so I determine which button was click? Using the right buton click is how such programs know when to pull up a menu. So I would like to know how to do this as well.

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  • vb.net system beep sound on XP

    - by Toby
    Is it possible to have a vb.net program sound the PC's internal speaker? you know the one that produces C's \a BELL I have tried beep(), but this only produces the error sound on the sound card. I have also tried <Runtime.InteropServices.DllImport("KERNEL32.DLL", EntryPoint:="Beep", SetLastError:=True, _ CharSet:=Runtime.InteropServices.CharSet.Unicode, ExactSpelling:=True, _ CallingConvention:=Runtime.InteropServices.CallingConvention.StdCall)> _ Public Shared Function _ aBeep(ByVal dwFreq As Integer, ByVal dwDuration As Integer) _ As Boolean End Function With no joy apparently its only good on vista and above Any suggestions? thanks

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  • Are Drupal theme settings cached?

    - by barraponto
    i want to change theme_username, a core theme function that outputs that dreadful "not verified" string on users who are not logged in (when they comment, for example). i want a checkbox in admin/build/themes/settings/MYTHEME to change that. but since that theme function gets called a lot, will it hurt the performance of any site using my theme or are theme settings cached?

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  • UNIX timestamp always in GMT?

    - by bn
    UNIX timestamp always in GMT? I tried to run php function time() and when I tried to convert the unix timestamp from the time() function, the output is not similar to the computer time. Thank You

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  • JBoss JDBC warning - "Unable to fill pool"

    - by Marcus
    We're getting this random warning from JBoss.. any idea why? It happens at random times when there are no active threads. Everything works when any processing resumes. 13:49:31,764 WARN [JBossManagedConnectionPool] [ ] Unable to fill pool org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sql.SQLException: Listener ref used the connection with the following error: ORA-12516, TNS:listener could not find available handler with matching protocol stack The Connection descriptor used by the client was: //localhost:1521/orcl

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  • JQuery timer, how do I do this

    - by Roland
    Is there anyway to implement a timer for JQuery, eg. every 10 seconds it needs to call a js function. I tried the following window.setTimeout(function() { alert('test'); }, 1000); but this only executes ones and then never again.

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  • Flex - Problem with auto resizing datagrid

    - by Marty Pitt
    Hi All I'm trying to create a datagrid which will resize vertically to ensure all the renderers are displayed in full. Additionally, Renderers are of variable height Renderers can resize themselves Generally speaking, the flow of events is as follows : One of the item renderers resizes itself (normally in response to a user click etc) It dispatches a bubbling event which the parent datagrid picks up The DataGrid attempts to resize to ensure that all renderers remain visible in full. I'm currently using this code within the datagrid to calculate the height: height = measureHeightOfItems(0, dataProvider.length ) + headerHeight; This appears to get an incorrect height. I've tried a number of variations including callLater ( to ensure the resize has completed so measure can work correctly), and overriding meausre() and calling invalidateSize() / validateSize(), but neither works. Below are 3 classes which will illustrate the problem. Clicking the button in the item renderers resizes the renderer. The grid should also expand so that all of the 3 renderers are shown in their entirety. Any suggestions would be greatly appreciated. Regards Marty DataGridProblem.mxml (Application file) <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" xmlns:view="view.*"> <mx:ArrayCollection id="dataProvider"> <mx:String>Item A</mx:String> <mx:String>Item B</mx:String> <mx:String>Item C</mx:String> </mx:ArrayCollection> <view:TestDataGrid id="dg" dataProvider="{ dataProvider }" width="400"> <view:columns> <mx:DataGridColumn dataField="text" /> <mx:DataGridColumn itemRenderer="view.RendererButton" /> </view:columns> </view:TestDataGrid> </mx:Application> view.TestDataGrid.as package view { import flash.events.Event; import mx.controls.DataGrid; import mx.core.ScrollPolicy; public class TestDataGrid extends DataGrid { public function TestDataGrid() { this.verticalScrollPolicy = ScrollPolicy.OFF; this.variableRowHeight = true; this.addEventListener( RendererButton.RENDERER_RESIZE , onRendererResize ); } private function onRendererResize( event : Event ) : void { resizeDatagrid(); } private function resizeDatagrid():void { height = measureHeightOfItems(0, dataProvider.length ) + headerHeight; } } } view.RendererButton.mxml <?xml version="1.0" encoding="utf-8"?> <mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Button width="50" height="50" click="onClick()" /> <mx:Script> <![CDATA[ public static const RENDERER_RESIZE : String = "resizeRenderer"; private function onClick() : void { this.height += 20; dispatchEvent( new Event( RENDERER_RESIZE , true ) ); } ]]> </mx:Script> </mx:HBox>

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  • How to compute fmod in C#?

    - by Danvil
    For given floating point numbers x and a, I would like to compute r (and n) such that x = a*n + r . In C/C++ this function is called fmod. However I do not see a convenient function in .NET. Math.DivRem is only for integers ...

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  • How to prevent flickering on click of browser back button

    - by venlak
    Hi...I am working on Asp.Net application.I wrote the below JavaScript code to prevent the user to not going to login page on click of browser back button when he logs into the application.It is working fine for me,but from the homepage when i click on browser back button,the flickering appears due to post back.How to prevent the flickering. Please provide the solution. function preventBack() { window.history.forward(); } setTimeout("preventBack()", 0); window.onunload=function() { null; }

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  • usage of try catch

    - by Muhammed Rauf K
    Which is best: Code Snippet 1 or Code Snippet 2 ? And Why? /* Code Snippet 1 * * Write try-catch in function definition */ void Main(string[] args) { AddMe(); } void AddMe() { try { // Do operations... } catch(Exception e) { } } /* Code Snippet 2 * * Write try-catch where we call the function. */ void Main(string[] args) { try { AddMe(); } catch (Exception e) { } } void AddMe() { // Do operations... }

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  • Random position without overlapping

    - by Hwang
    How to stop MCs from overlapping each other? private function loadWishes():void { for (i; i } } private function checkOverlap(wishB:MovieClip) { wishB.x=Math.random()*stage.stageWidth; wishB.y=Math.random()*stage.stageHeight; for (var i:uint=0; i This doesn't seems to be working cause the amount of it checking whether MC is overlapping is about the amount of MC on stage. how to make it keep checking till everything's fine?

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  • prgramming a windows service

    - by xarzu
    I have started prgramming a windows service. I have added a notify icon from the toolbox. It has the small notify icon that appears in the systray as a member of those icons. It works so far. So far I have a blank form. I have used the DoubleClick for the notifyIcon to bring up the form (I will use the form for something later). Now I have a list of things I want to accomplish to make this work like a true windows service. First of all, if possible, I owuld like to remove the maximize and cancel button on the form. Most windos service apps that I have seen offer the ability to close the app by right-mouse-button clicking on the notify icon which brings up a menu of options. I see in the properties of the form under Misc there is an CancelButton. But I do not see how do deactivate it. In the Properties of the forum I see under Window Style there is a ControlBox option that, if I turn to false, all three buttons, (minimize, maximize and cancel) go away. These are not what i am looking for. I would not like the option for them to resize, maximize or close the form here. I suspect people will close the box intending to make the box go away while still wanting the app to run. Under the "Focus" caption in Properties, there id "Deactivate". I have created my own event/method/function for this and in debug I noticed that when you click on the x-box in the upper right corner, this function is called. The problem is that after the function is over, the app closes anyway. How do I over-ride this function? Secondly, how do you catch the right button click event on the notify icon in the systray? I can see how to create events for "Click" and "MouseClick" etc. but how so I determine which button was click? Using the right buton click is how such programs know when to pull up a menu. So I would like to know how to do this as well.

    Read the article

  • PHP: Array access short-hand?

    - by motionman95
    In Javascript, after executing a function I can immediately get the an element of the array returned by the function, like so: myFunc("birds")[0] //gets element zero returned from "myFunc()" This is much easier and faster than doing this: $myArray = myFunc("birds"); echo $myArray[0]; Does PHP have a similar shorthand to javascript? I'm just curious. Thanks in advance!

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  • Accessing other controls by name in a Silverlight ControlTemplate

    - by Chris S
    I have a custom control that inherits from ContentControl. Inside the generic.xaml file is a simple Grid with 2 rows: Row 1 - A toggle button Row 2 - A StackPanel with a TextBlock, named "Stackpanel1" The ToggleButton has its own nested ControlTemplate which has VisualStates for Checked/Unchecked. Is it possible to reference "Stackpanel1" from inside the ToggleButton's control template somehow? In order to show or hide the stackpanel.

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