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dojox.widget.dialog: disable close button opacity animation

- by James Maroney

I am nearly happy with my dialog widget now, only that there is a built-in behavior of the close button fading in and out with mouseover/out interaction. I have found no way to disable this feature such that the close button remains at full opacity anytime the dialog is open. Here's roughly the code I'm working from: var d = new dojox.widget.Dialog({modal:true,sizeMethod:"chain",closable:true}); d.startup(); d.attr('content', /*html content*/); d.attr('dimensions',[/*width*/, /*height*/ ]).show(); There's much logic that I'm omitting here for brevity, but this should be all that is specifically pertinent to the way I am constructing the dialog. Many Thanks.

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Grails searchable plugin

- by Don

Hi, In my Grails app, I'm using the Searchable plugin for searching/indexing. I want to write a Compass/Lucene query that involves multiple domain classes. Within that query when I want to refer to the id of a class, I can't simply use 'id' because all classes have an 'id' property. Currently, I work around this problem by adding the following property to a class Foo public Long getFooId() { return id } static transients = ['fooId'] Then when I want to refer to the id of Foo within a query I use 'fooId'. Is there a way I can provide an alias for a property in the searchable mapping rather than adding a property to the class?

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Find directory on different server C#

- by rainhider

I have a website on Server A and it needs to find a directory on Server B. On my aspx page, I have: <mb:FileSystemDataSource ID="fileSystemDataSource" runat="server" RootPath="\\servername\Folder\Subfolder" FoldersOnly="true" /> mb is assembly name alias. On my aspx.cs page, I have: protected void Page_Load(object sender, EventArgs e) { DataTable gridviewSource = DisplayFilesInGridView(); DataRow gridviewRow; //sets the server path so it does not default to current server string ServerPath = System.IO.Path.Combine( "//", this.fileSystemDataSource.RootPath); //Get All Folders Or Directories and add in table DirectoryInfo directory = new DirectoryInfo(Server.MapPath(ServerPath)); DirectoryInfo[] subDirectories = directory.GetDirectories(); } Well, it throws an error on the Server.MapPath because it cannot find the server. I am connected to the network. I looked at IIS, and I am pretty sure that is not the problem. If so, I would really need specifics. Any help would be appreciated.

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Is ruby ||= intelligent?

- by brad

I have a question regarding the ||= statement in ruby and this is of particular interest to me as I'm using it to write to memcache. What I'm wondering is, does ||= check the receiver first to see if it's set before calling that setter, or is it literally an alias to x = x || y This wouldn't really matter in the case of a normal variable but using something like: CACHE[:some_key] ||= "Some String" could possibly do a memcache write which is more expensive than a simple variable set. I couldn't find anything about ||= in the ruby api oddly enough so I haven't been able to answer this myself. Of course I know that: CACHE[:some_key] = "Some String" if CACHE[:some_key].nil? would achieve this, I'm just looking for the most terse syntax.

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surfaceDestroyed called out of turn

- by Avasulthiris

I'm currently developing on minimum sdk version 3 (Android 1.5 - cupcake) and I'm having a strange unexplained issue that I have not been able to solve on my own. It is now becoming a rather urgent issue as I've already missed 1 deadline... I'm writing a high-level library to make long term android development easier and quicker. The one specific module has to capture images for a application... I've gotten everything right so far over the last couple months, except this one little thing and I don't know what to do any more: When I use the Camera object and implement a SurfaceHolder.Callback, the methods surfaceCreated() and surfaceChanged() are called one after the other. Then when the activity finishes, surfaceDestroyed() is called. This is how it should be, but when I stick the exact same code in my library (plain Java library that references the Android API - not in an activity), surfaceDestroyed() is called directly after created and changed. As a result - the camera object is closed before I can use it and the application force closes. What a pain. I can't do anything! This method call is controlled by the device.. Why does the surface close for no reason? Even when I post it to run on the activity thread through my own invokeAndWait(Runnable) method, like I do for many other things. I have 5 different working examples of different ways and implementations of capturing images in android but I still get the same issue when I plug it into my library. I don't understand what the difference is. The code is pretty much the same - and I post all the related code to the UI thread so its not a thread handling issue or anything like that. I've rewritten it about 20 times in different ways - same issue every time.. The only other way to approach it that I know of is creating a new Camera and setting it to the VideoView. The android source (c++ native code) however provides no Camera constructor, only an open() method which automatically forwards the camera's state to 'prepared' but I can only set the camera to the VideoView from the 'initialized' state. Pretty silly, I know, but there is no way around it unless I modify the Android library source code haha. not an option! The API does not allow for this method - you are expected to use it like my first example. So essentially - i just need to understand exactly why surfaceDestroyed() is called out of turn and if there is anything I can do to avoid it closing? If i can just understand the exact logic behind it and how it works! The documentation isn't much help! Secondly, if someone knows of any alternative ways to do it, as my second example, but hopefully one which the API actually allows for? haha Thanks guys. I would post code, but its fairly complicated, a couple thousand lines for this specific class and it would probably take a couple days to explain with all the threading and event listeners and what not. I just need help with this 1 single thing. Please let me know if you have any questions.

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Getting past Salesforce trigger governors

- by Jake

I'm trying to write an "after update" trigger that does a batch update on all child records of the record that has just been updated. This needs to be able to handle 15k+ child records at a time. Unfortunately, the limit appears to be 100, which is so far below my needs it's not even close to acceptable. I haven't tried splitting the records into batches of 100 each, since this will still put me at a cap of 10k updates per trigger execution. (Maybe I could just daisy-chain triggers together? ugh.) Does anyone know what series of hoops I can jump through to overcome yet another ridiculously short-sighted limitation by this awful development "platform"?

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Program crashes in debugger before anything happens

- by Tim

I'm building an application for Windows XP using the MinGW tool chain and it sometimes crashes unexpectedly. So, I'm trying to use a debugger (Gdb) but the program exits with code 03 before anything happens. In fact, all I see from GDB is: [New thread 3184.0x7b8][New thread 3184.0xef8] Program exited with code 03. My suspicion is that there is some failed dynamic linking of a dependency (which are Qt, VTK, and ITK, all built with MinGW). However, this does not happen when I just run the program normally. Or if it happens, it appears to be intermittent and well after the program is launched and running. NOTE: I'm also using Cmake for cross compiling. What should I do? What can I try?

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How to filter results by multiple fields?

- by hadees

I am working on a survey application in ruby on rails and on the results page I want to let users filter the answers by a bunch of demographic questions I asked at the start of the survey. For example I asked users what their gender and career was. So I was thinking of having dropdowns for gender and career. Both dropdowns would default to all but if a user selected female and marketer then my results page would so only answers from female marketers. I think the right way of doing this is to use named_scopes where I have a named_scope for every one of my demographic questions, in this example gender and career, which would take in a sanitized value from the dropdown to use at the conditional but i'm unsure on how to dynamically create the named_scope chain since I have like 5 demographic questions and presumably some of them are going to be set to all.

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Dynamic "OR" conditions in Rails 3

- by Ryan Foster

I am working on a carpool application where people can search for lifts. They should be able to select the city from which they would liked to be picked up and choose a radius which will then add the cities in range to the query. However the way it is so far is that i can only chain a bunch of "AND" conditions together where it would be right to say "WHERE start_city = city_from OR start_city = a_city_in_range OR start_city = another_city_in_range" Does anyone know how to achive this? Thanks very much in advance. class Search < ActiveRecord::Base def find_lifts scope = Lift.where('city_from_id = ?', self.city_from) #returns id of cities which are in range of given radius @cities_in_range_from = City.location_ids_in_range(self.city_from, self.radius_from) #adds where condition based on cities in range for city in @cities_in_range_from scope = scope.where('city_from_id = ?', city) #something like scope.or('city_from_id = ?', city) would be nice.. end end

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Using a Filter to serve a specific page?

- by user246114

Hi, I am using a class which implements Filter for my jsp stuff. It looks like this: public class MyFilter implements Filter { public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { request.getRequestDispatcher("mypage.jsp").forward(request, response); } } So the target, "mypage.jsp", is just sitting in my top-level directory. The filter works fine if I'm entering urls like: http://www.mysite.com/foo http://www.mysite.com/boo but if I enter a trailing slash, I'll get a 404: http://www.mysite.com/foo/ http://www.mysite.com/boo/ HTTP ERROR: 404 /foo/mypage.jsp RequestURI=/foo/mypage.jsp it seems if I enter the trailing slash, then the filter thinks I want it to look for mypage.jsp in subfolder foo or boo, but I really always want it to just find it at: http://www.mysite.com/mypage.jsp how can I do that? Thank you

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Using inheritance and polymorphism to solve a common game problem

- by Barry Brown

I have two classes; let's call them Ogre and Wizard. (All fields are public to make the example easier to type in.) public class Ogre { int weight; int height; int axeLength; } public class Wizard { int age; int IQ; int height; } In each class I can create a method called, say, battle() that will determine who will win if an Ogre meets and Ogre or a Wizard meets a Wizard. Here's an example. If an Ogre meets an Ogre, the heavier one wins. But if the weight is the same, the one with the longer axe wins. public Ogre battle(Ogre o) { if (this.height > o.height) return this; else if (this.height < o.height) return o; else if (this.axeLength > o.axeLength) return this; else if (this.axeLength < o.axeLength) return o; else return this; // default case } We can make a similar method for Wizards. But what if a Wizard meets an Ogre? We could of course make a method for that, comparing, say, just the heights. public Wizard battle(Ogre o) { if (this.height > o.height) return this; else if (this.height < o.height) return o; else return this; } And we'd make a similar one for Ogres that meet Wizard. But things get out of hand if we have to add more character types to the program. This is where I get stuck. One obvious solution is to create a Character class with the common traits. Ogre and Wizard inherit from the Character and extend it to include the other traits that define each one. public class Character { int height; public Character battle(Character c) { if (this.height > c.height) return this; else if (this.height < c.height) return c; else return this; } } Is there a better way to organize the classes? I've looked at the strategy pattern and the mediator pattern, but I'm not sure how either of them (if any) could help here. My goal is to reach some kind of common battle method, so that if an Ogre meets an Ogre it uses the Ogre-vs-Ogre battle, but if an Ogre meets a Wizard, it uses a more generic one. Further, what if the characters that meet share no common traits? How can we decide who wins a battle?

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Use of (non) qualified names

- by AProgrammer

If I want to use the name baz defined in package foo|bar|quz, I've several choices: provide fbq as a short name for foo|bar|quz and use fbq|baz use foo|bar|quz|baz import baz from foo|bar|quz|baz and then use baz (or an alias given in the import process) import all public symbols from foo|bar|quz|baz and then use baz For the languages I know, my perception is that the best practice is to use the first two ways (I'll use one or the other depending on the specific package full name and the number of symbols I need from it). I'd use the third only in a language which doesn't provide the first and hunt for supporting tools to write the import statements. And in my opinion the fourth should be reserved to package designed with than import in mind, for instance if all exported symbols start with a prefix or contains the name of the package. My questions: what is in your opinion the best practice for your favorite languages? what would you suggest in a new language? what would you suggest in an old language adding such a feature?

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Deep Null checking, is there a better way?

- by Mattias Konradsson

We've all been there, we have some deep property like cake.frosting.berries.loader that we need to check if it's null so there's no exception. The way to do is is to use a short-circuiting if statement if (cake != null && cake.frosting != null && cake.frosting.berries != null) ... This strikes me however as not very elegant, there should perhaps be an easier way to check the entire chain and see if it comes up against a null variable/property. So is it possible using some extension method or would it be a language feature, or is it just a bad idea?

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What's the best way to measure and track performance over various calls at runtime?

- by bitcruncher

Hello. I'm trying to optimize the performance of my code, but I'm not familiar with xcode's debuggers or debuggers in general. Is it possible to track the execution time and frequency of calls being made at runtime? Imagine a chain of events with some recursive calls over a fraction of a second. What's the best way to track where the CPU spends most of its time? Many thanks. Edit: Maybe this is better asked by saying, how do I use the xcode debug tools to do a stack trace?

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using Applescript to retrieve movie file duration via Finder properties

- by Matt

When using Get Info on movie files in the Finder, I've noticed that many movie files have an accessible "Duration" property under the More Info tab. Is there an easy way to access this data using Applescript? I've tried lines like "set theTime to (duration of aFile)", but it doesn't seem to be as simple as that. Ideally I'd like to access the movie duration via the Finder properties without having to actually open the file in QuickTime. Is this possible? Edit: I seem to have figured this out... you need to use the "System Events" application, specifically the Movie File Suite of commands (and, importantly, you need to set the movie variable as a string, rather than an alias): set theMovie to (choose file with prompt "Select a movie file:") as string tell application "System Events" set theName to name of movie file theMovie set theDuration to (duration of contents of movie file theMovie) / (time scale of contents of movie file theMovie) end tell

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CentOS: revert python version back to original

- by NP

Hi all, I installed python 2.6 using the instructions here on CentOS 5.4. However I realized it was a bad move and I need to revert back to 2.4, which was there originally. Can anyone guide me on how to undo what I did here? In particular, I am not sure how to undo this: Configure ld to find your shared libs: $ cat /etc/ld.so.conf.d/opt-python2.5.conf /opt/python2.5/lib (hit enter) (hit ctrl-d to return to shell) $ ldconfig I tried removing the alias and the symlink and even re-aliasing python to /usr/bin/python, but when I try to install an RPM i get this error: error: Failed dependencies: libpython2.4.so.1.0 is needed by ... Thanks in advance.

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Ado.Net Entity produces "namespace cannot be found"

- by Dave

I've seen several possible solutions to this, but none have worked for me. After adding a ADO.NET Entity Data Model to my .Net Forms C# web project, I am unable to use it. Perhaps I made a mistake adding it? The name of the file added is QcFormData.edmx. In my code, perhaps I'm instantiating it incorrectly? I tried adding the line: QcFormDataContainer db = new QcFormDataContainer(); It appears in Intellisense, but when compiling I get the error : Error 13 The type or namespace name 'QcFormDataContainer' could not be found (are you missing a using directive or an assembly reference?) I've followed the suggestions that I found online that did not help: 1) made sure there is "using System.Data.Entity" 2) made sure the dll exists. 3) made sure the reference exists. 4) one post said use using System.Web.Data.Entity; but I do not see that available. What am I missing? QcFormData.edmx <?xml version="1.0" encoding="utf-8"?> <edmx:Edmx Version="3.0" xmlns:edmx="http://schemas.microsoft.com/ado/2009/11/edmx">  <edmx:Runtime>  <edmx:StorageModels> <Schema Namespace="MyCocoModel.Store" Alias="Self" Provider="System.Data.SqlClient" ProviderManifestToken="2008" xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator" xmlns="http://schemas.microsoft.com/ado/2009/11/edm/ssdl"> <EntityContainer Name="MyCocoModelStoreContainer"> <EntitySet Name="QcFieldValues" EntityType="MyCocoModel.Store.QcFieldValues" store:Type="Tables" Schema="dbo" /> </EntityContainer> <EntityType Name="QcFieldValues"> <Key> <PropertyRef Name="ID" /> </Key> <Property Name="ID" Type="int" Nullable="false" StoreGeneratedPattern="Identity" /> <Property Name="FieldID" Type="nvarchar" MaxLength="100" /> <Property Name="FieldValue" Type="nvarchar" MaxLength="100" /> <Property Name="DateTimeAdded" Type="datetime" /> <Property Name="OrderReserveNumber" Type="nvarchar" MaxLength="50" /> </EntityType> </Schema> </edmx:StorageModels>  <edmx:ConceptualModels> <Schema Namespace="MyCocoModel" Alias="Self" p1:UseStrongSpatialTypes="false" xmlns:annotation="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns:p1="http://schemas.microsoft.com/ado/2009/02/edm/annotation" xmlns="http://schemas.microsoft.com/ado/2009/11/edm"> <EntityContainer Name="MyCocoEntities" p1:LazyLoadingEnabled="true"> <EntitySet Name="QcFieldValues" EntityType="MyCocoModel.QcFieldValue" /> </EntityContainer> <EntityType Name="QcFieldValue"> <Key> <PropertyRef Name="ID" /> </Key> <Property Name="ID" Type="Int32" Nullable="false" p1:StoreGeneratedPattern="Identity" /> <Property Name="FieldID" Type="String" MaxLength="100" Unicode="true" FixedLength="false" /> <Property Name="FieldValue" Type="String" MaxLength="100" Unicode="true" FixedLength="false" /> <Property Name="DateTimeAdded" Type="DateTime" Precision="3" /> <Property Name="OrderReserveNumber" Type="String" MaxLength="50" Unicode="true" FixedLength="false" /> </EntityType> </Schema> </edmx:ConceptualModels>  <edmx:Mappings> <Mapping Space="C-S" xmlns="http://schemas.microsoft.com/ado/2009/11/mapping/cs"> <EntityContainerMapping StorageEntityContainer="MyCocoModelStoreContainer" CdmEntityContainer="MyCocoEntities"> <EntitySetMapping Name="QcFieldValues"> <EntityTypeMapping TypeName="MyCocoModel.QcFieldValue"> <MappingFragment StoreEntitySet="QcFieldValues"> <ScalarProperty Name="ID" ColumnName="ID" /> <ScalarProperty Name="FieldID" ColumnName="FieldID" /> <ScalarProperty Name="FieldValue" ColumnName="FieldValue" /> <ScalarProperty Name="DateTimeAdded" ColumnName="DateTimeAdded" /> <ScalarProperty Name="OrderReserveNumber" ColumnName="OrderReserveNumber" /> </MappingFragment> </EntityTypeMapping> </EntitySetMapping> </EntityContainerMapping> </Mapping> </edmx:Mappings> </edmx:Runtime>  <Designer xmlns="http://schemas.microsoft.com/ado/2009/11/edmx"> <Connection> <DesignerInfoPropertySet> <DesignerProperty Name="MetadataArtifactProcessing" Value="EmbedInOutputAssembly" /> </DesignerInfoPropertySet> </Connection> <Options> <DesignerInfoPropertySet> <DesignerProperty Name="ValidateOnBuild" Value="true" /> <DesignerProperty Name="EnablePluralization" Value="True" /> <DesignerProperty Name="IncludeForeignKeysInModel" Value="True" /> <DesignerProperty Name="CodeGenerationStrategy" Value="None" /> </DesignerInfoPropertySet> </Options>  <Diagrams></Diagrams> </Designer> </edmx:Edmx>

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retrieve contact's nickname

- by TomTasche

Hello, I want to get the nickname of a contact from addressbook. I start with his phone number, query it and want the nickname (aka alias) as a result. Cursor cur = context.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.NUMBER + " = " + incomingNumber, null, null); if (cur.moveToFirst()) { Log.e("saymyname", cur.getString(cur.getColumnIndex(ContactsContract.CommonDataKinds.Nickname.NAME))); Log.e("saymyname", cur.getString(cur.getColumnIndex(ContactsContract.CommonDataKinds.Nickname.LABEL))); } Output of the logs is the incomingNumber (first Log.e() ) and null (second Log.e() ), but I want to get the contact's nickname! Thanks Tom

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How to unmangle exported symbols from C++ in dynamic libraries in XCode on OSX

- by Gerald

I've been trying to develop a dynamic library in C++ that can be run-time loaded in an application. I finally got it working, but it's a little ugly. I have a function that takes a pointer to a C++ class as an argument, which looks like this: bool registerGrindPlugin( Grind::PluginManager* mgr ); But of course it's being exported as: _Z19registerGrindPluginPN5Grind13PluginManagerE I tried a .c file with a simple function and it exported fine as "registerGrindPlugin", but of course I can't pass a C++ class as the argument that way. Soo... my question is, is there a way to unmangle or alias the exported symbol so that I don't have to use a monstrosity like Z19registerGrindPluginPN5Grind13PluginManagerE in my dlsym call? I did see something about -alias_list as a linker option, but I haven't quite figured out how to use it in XCode. If that is the solution, can somebody provide some more details on how to use this?

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Understanding a skelton of jQuery plugin

- by TK

At a website, I found the following code to make a jQuery plugin: (function($){ // Our code here... })(jQuery); I don't understand how the code above works. What I understand is that the code executes immediately because the very last () in function(){}(). So the entire code says that is an anonymous function that is run immediately. But I don't understand why the wrapping needs to pass jQuery and that inside it needs $ to be passed. From my understanding, $ is an alias to jQuery, meaning practically the same. What is the meaning of $ and jQuery here? How does the overall code work as a jQuery plugin?

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MySQL/SQL: Update with correlated subquery from the updated table itself

- by Roee Adler

I have a generic question that I will try to explain using an example. Say I have a table with the fields: "id", "name", "category", "appearances" and "ratio" The idea is that I have several items, each related to a single category and "appears" several times. The ratio field should include the percentage of each item's appearances out of the total number of appearances of items in the category. In pseudo-code what I need is the following: For each category find the total sum of appearances for items related to it. For example it can be done with (select sum("appearances") from table group by category) For each item set the ratio value as the item's appearances divided by the sum found for the category above Now I'm trying to achieve this with a single update query, but can't seem to do it. What I thought I should do is: update Table T set T.ratio = T.appearances / ( select sum(S.appearances) from Table S where S.id = T.id ) But MySQL does not accept the alias T in the update column, and I did not find other ways of achieving this. Any ideas?

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Is it possible to use ServicePointManager with Webbrowser control?

- by paul77

I want to disable "Alert window" that I get from login page of one HTTPS site with "untrusted certificate". ServicePointManager is used for WebRequest/WebResponse: > public static bool > ValidateServerCertificate(object > sender, X509Certificate certificate, > X509Chain chain, SslPolicyErrors > sslPolicyErrors) { > return true; } > > ServicePointManager.ServerCertificateValidationCallback > = new RemoteCertificateValidationCallback(ValidateServerCertificate); but how can I use it with Webbrowser control?

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Are multiply-thrown Exceptions checked or runtime?

- by froadie

I have an Exception chain in which method1 throws an Exception to method2 which throws the Exception on to main. For some reason, the compiler forces me to deal with the error in method2 and marks it as an error if I don't, indicating that it's a checked Exception. But when the same Exception is thrown further down the line to main, the compiler allows me to ignore it and doesn't display any errors. The original Exception in method1 is a ParseException, which is checked. But the method has a generic throws Exception clause in the header, and the same object is thrown to method2, which has an identical throws Exception clause. When and how does this Exception lose the status of being checked / caught by the compiler? Edited to clarify: public void method1() throws Exception{ // code that may generate ParseException } public void method2() throws Exception{ method1(); //compiler error } public static void main(String[] args){ method2(); //ignored by compiler }

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what is a performance way to 'tree-walking' through my Entity Framework data

- by Greg

Hi, I have a Entity Framework design with a few tables that define a "graph". So there can be a large chain of relationships between objects in the few tables via concept of parent/child relationships. What is a performance way to 'tree-walking' through my Entity Framework data? That is I assume I wouldn't want to load the full set of all NODES and RELATIONSHIPS from the database for the purpose of walking the tree, where the end result may only be identifying leaf nodes? Or would this be OK with the way lazy loading may work at the column/parameter level? Else how could I load just the skeleton of the objects and then when needing to refer to any attributes have them lazy load then?

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No drop packets using the error models for wirelesss scenario ?

I am trying to use the error model in ns2 with wireless links, I am using ns2.33. I tried the uniform error model and the markov chain model. No errors from ns but when I am trying to find the dropped packets due to corruption I can not find any of them using either the uniform or markov models. So please help me if I made any error in using the error model. to search for dropped packets I am using eid@eid-laptop:~/code/ns2/noisy$ cat mixed.tr | grep d My code is available here : http://pastebin.com/f68749435

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