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  • Is it necessarily bad style to ignore the return value of a method

    - by Jono
    Let's say I have a C# method public void CheckXYZ(int xyz) { // do some operation with side effects } Elsewhere in the same class is another method public int GetCheckedXYZ(int xyz) { int abc; // functionally equivalent operation to CheckXYZ, // with additional side effect of assigning a value to abc return abc; // this value is calculated during the check above } Is it necessarily bad style to refactor this by removing the CheckXYZ method, and replacing all existing CheckXYZ() calls with GetCheckedXYZ(), ignoring the return value? The returned type isn't IDisposable in this case. Does it come down to discretion?

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  • Can I prevent iPhone from using 3G under any circumstances?

    - by dageshi
    I'm writing a travel guide related app that will download large databases (60meg) potentially overseas, with the reachability code I can tell when a host is reachable via wifi or 3g BUT I'm worried that if for some reason the wifi connection breaks for a minute or so as some DSL connections are likely to do on occasion the iphone will switch transparently to 3G and without realising I could be racking up someones phone bill with overseas data charges! So I'm wondering if anyone has any experience, in the event of such break in wifi connectivity (wifi still works but it's connection to the net is down) would the reachability code report ReachableViaWWAN? So I could wait till my download code returns, check how the host is currently reachable and if it's via 3g I could abort? Is it possible to select what type of connection I can use aka 3g or wifi exclusively?

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  • My IP seems to be blocked by web hosting server...

    - by shuxer
    Hi All I have a strange problem, i just installed my php web site on a shared hosting, all services were working fine. But after configuring my app i just could visit my web site only once, other attempts gives "The server is taking too long to respond.". But from other IP i can access, but only once, it seems all ip addressess beeing blocked after first visit(even ftp and other services get down, no access at all from the IP), can anyone help to explore this problem ? i don't think that it's my app problem, the app works fine on my local PC. Thanks.

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  • ASP.NET - DropDown DataBinding (Rebind?)

    - by Bob Fincheimer
    I have a drop down which has a method which binds data to it: dropDown.Items.Clear() dropDown.AppendDataBoundItems = True Select Case selType Case SelectionTypes.Empty dropDown.Items.Insert(0, New ListItem("", "")) Case SelectionTypes.Any dropDown.Items.Insert(0, New ListItem("ANY", "")) Case SelectionTypes.Select dropDown.Items.Insert(0, New ListItem("Select One", "")) End Select BindDropDown(val) The BindDropDown method simply sets the datasource, datakeyname, datavaluename, and then databinds the data. For a reason which I cannot avoid, I MUST call this method twice sometimes. When it is called twice, All of the databound items show up two times, but the top item (the one I manually insert) is there only once. Is ASP doing something wierd when i databind twice even though i clear the list between? Or does it have to do something with the viewstate/controlstate? EDIT__ The entire page, and this control has EnableViewState="false" EDIT___ The dropdown is inside a form view. After the selected value is set I have to rebind the dropdown just in case the selected value is not there [because it is an inactive user]. After this, the formview duplicates the databound items.

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  • How to use Region Time Zone with a .Net application?

    - by davitz38
    I'm working on an asp.net mvc application. Each user have his own time zone. Right now, I'm using "TimeZoneInfo.GetSystemTimeZones" to generate a drop down list in order for the user to select a timezone and this is what I store in my db They are like that: Morocco Standard Time (00:00:00) UTC (00:00:00) GMT Standard Time (00:00:00) ... I know that php use a different timezone set, they are "region timezone", for example: Europe/Paris Europe/London ... My question is: is there a way to play with the region timezone (like php) in an .NET application? The only way I can think of is to bind each php region timezone to the .net timezone. Also, the "TimeZoneInfo.GetSystemTimeZones" list all of the timezone on the machine. Is the list different between windows server, windows vista, windows xp? Hope this make sense, thanks guys

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  • How to read log4j output to a web page?

    - by Ran
    I have a web page, used for admin purposes, which runs a task (image fetching from a remote site). In order to be able to debug the task using the browser only, no ssh etc, I'd like to be able to read all log output from the executing thread and spit it out to the web page. The task boils down to: Changing log level for current thread at the beginning of the call and restore when the call is done. Reading all log output by current thread and storing it in a string. So in pseudocode my execute() method would look like this: (I'm using struts2) public String execute() throws Exception { turnLoggingLevelToDebugOnlyForThisThread() ... do stuff... restoreLoggingLevelForThisThread() String logs = readAllLogsByThisThread(); } Can this be done with log4j? I'm using tomcat, struts2, log4j and slf4j.

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  • In Bloomberg API how do you specify to get FX forwards as a spread rather than absolute values?

    - by Nick Fortescue
    How do you explicitly request fx forwards as outrights using the bloomberg API? In the Bloomberg terminal you can choose whether to get FX Forwards as absolute rates (outrights) or as offsets from Spots (Points) by doing XDF, hitting 7, then the option is about half way down. 0 means outrights, and 1 means offfsets. With most defaults you can explicitly set them in the API, so your code gives the same result whichever computer you run on. How do you set this one in a V3 API query?

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  • Binding Navigation Property with Entity Framework

    - by JSmaga
    Hi, I have another question about binding using C# and the entity framework. Here, I'm looking to bind a navigation property to a listbox or a listview. I saw on different posts that if I update the collection using code behind the list would not be notified because the collection does not handle notification (it's always the same problem anyway). People suggested to use an ObservableCollection for example, but, and here is my question, this comes down to basically duplicate the collection and hence, if I modify it, I'd have to handle in code-behind the fact that the change has also to be applied to the "original" navigation property right? If that's the case, I was thinking: why not create a custom property called, say, MyObservableNavigationProperty in a partial class. I could then interact only with this collection, catch the event when the collection is changed and apply the change to the "original" collection. Is that a nice way to do the trick? or am I getting all confused here....

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  • port binding "problem" with Eclipse, Java, & Windows

    - by Jay
    Hi All, I use eclipse to develop a web based java application. My normal course of business is grab the next task tracking ticket. If there is a problem that needs to correcting, I run the application locally, which loads of a Jetty webserver, and binds to port 8080. After verifying the problem, I fix the problem, rebuild, and the re-run the application. The problem is, I far too often forget to close the jetty server before re-running. This generates the Java bind error: WARNING: failed [email protected]:8080: java.net.BindException: Address already in use: JVM_Bind I work in Windows, and was looking to see if there is command I could run to un-bind the port, but couldn't find an answer there. Does anyone here have a good idea of how to fix my problem, other than remember to shut down the old jetty instance before starting a new one? Thanks, Jay

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  • keypress event not being triggered only at start and end of text field in Firefox (JQuery)

    - by rlivsey
    I'm listening for keypress events on an input field with delegation. For some reason, Firefox doesn't trigger the delegated event for cursor UP when at the start of the field, or cursor DOWN when at the end. LEFT and RIGHT work as expected all the time. Directly binding an event listener to the field works fine, so it has to be something to do with delegation. Does anyone know if this is a know issue, I couldn't find anything on Google/forums etc..? $("div").delegate(":input", "keypress", function(e){ // doesn't get triggered }); $("div :input").bind("keypress", function(e){ // gets triggered fine }); Here's a demo which shows the issue - http://livsey.org/jquery.delegation.html

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  • Rails 3: habtm migration, primary key issue

    - by Brian Wigginton
    I'm trying to setup a migration file for a habtm relationship, however when I run the migration I'm getting the following error: Primary key is not allowed in a has_and_belongs_to_many join table (parts_vehicles). Here is my migration file (20110111035950_create_parts_vehicles.rb): class CreatePartsVehiclesJoinTable < ActiveRecord::Migration def self.up create_table :parts_vehicles, :id => false do |t| t.integer :part_id t.integer :vehicle_id end end def self.down drop_table :parts_vehicles end end The documentation example states to use :id => false to disable a primary key from being generated, but I'm still getting the error.

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  • javax.servlet import cannot be resolved after moving web servlet

    - by Michael Kjörling
    I have written a small web servlet to run under Tomcat, using Eclipse Helios. In its old, non-source-controlled location, everything was fine, but now I need to add this to our source control system. Moving the old files out of the way, creating a new workspace, setting up the server connection and copying and importing the existing projects into the new workspace all worked fine once I figured out how to do it, but I can't get the servlet to build. Instead, I get a whole bunch of cannot be resolved to a type errors talking about various servlet class types; HttpServlet, HttpServletRequest, ServletException, etc. Another error that is almost certainly related is The import javax.servlet cannot be resolved. I am obviously missing something very basic, but I'm new to this (and not having the terminology really down pat probably doesn't help me Google for an answer). Any suggestions as to what I might be missing would be greatly appreciated.

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  • remove eventhandler from wpf scrollviewer

    - by rubentjeuh
    I've got this: <ScrollViewer x:Name="svBegin" CanContentScroll="True"> <Grid x:Name="gGegevensGrid" KeyDown="gGegevensGrid_KeyDown" ScrollViewer.VerticalScrollBarVisibility="Visible"></Grid> </ScrollViewer> As you can see I've got a KeyDown eventhandler on the grid. But when I press the downkey, the scrollviewer scrolls down. Even when I try this, it doesn't work: svBegin.KeyDown += new KeyEventHandler(svBegin_KeyDown); svBegin.KeyDown -= new KeyEventHandler(svBegin_KeyDown); Anybody who knows how to solve this problem?

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  • Re-order mysql rows using PHP

    - by dave e
    | id | url | title | menu_id | ------+--------+--------+---------- | 1 | http://| link 1 | 1 | | 2 | http://| link 2 | 2 | | 3 | http://| link 3 | 3 | | 4 | http://| link 4 | 4 | Hi, I was wondering if its possible using PHP to reorder the above to something like below. I am trying to generate a menu which can easily be reordered by clicking an up or down arrow. I have no idea where to start. Any help would be much appreciated. | id | url | title | menu_id | ------+--------+--------+---------- | 1 | http://| link 1 | 2 | | 2 | http://| link 2 | 4 | | 3 | http://| link 3 | 3 | | 4 | http://| link 4 | 1 |

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  • Singelton on iPhone Simulator vs Singelton on real Device

    - by Helge Becker
    I am using a Singelton for some shared stuff. In the simulator, the app crashes ocasionally. Tracking the crash down shows that the the properties of my Singelton became dealocated. Those crashes never happend on a real device. Does the iPHone simulator handle memory managemend different? GC maybe? Changed the singelton to match this pattern. The iPhone Simulator dont crash now, but I am not sure about the memory handling on the real device. I assume that this solution will cause problems. What do you think?

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  • Why do all module run together?

    - by gunbuster363
    I just made a fresh copy of eclipse and installed pydev. In my first trial to use pydev with eclipse, I created 2 module under the src package(the default one) FirstModule.py: ''' Created on 18.06.2009 @author: Lars Vogel ''' def add(a,b): return a+b def addFixedValue(a): y = 5 return y +a print "123" run.py: ''' Created on Jun 20, 2011 @author: Raymond.Yeung ''' from FirstModule import add print add(1,2) print "Helloword" When I pull out the pull down menu of the run button, and click "ProjectName run.py", here is the result: 123 3 Helloword Apparantly both module ran, why? Is this the default setting?

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  • Date Input in safari

    - by Fresheyeball
    So I am using the HTML5 date input type, primary to trigger the 'wheels' in iOS. Everything is working fine in ie7-9 Chrome and FF. But Safari for OSX is very upset. It sees the need to add little 'up and down' buttons to the right hand side and generally mess up my visual stylings. My attempt to fix this, is to change the date inputs back to text inputs for desktop browsers, and leave it as date inputs for mobile: unless device.is # 'device' is a lib I use to detect mobile browsers dateFields = $ 'input[type="date"]' dateFields.attr 'type', 'text' #this fails dateFields.datepicker() dateFields.on 'keyup', (e) -> e.preventDefault() $(@).val '' Beyond altering the input type with js, I am at a loss for how to fix this little bugger. Have you had to deal with this problem?

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  • Is this a valid benefit of using embedded SQL over stored procedures?

    - by George
    Here's an argument for SPs that I haven't heard. Flamers, be gentle with the down tick, Since there is overhead associated with each trip to the database server, I would suggest that a POSSIBLE reason for placing your SQL in SPs over embedded code is that you are more insulated to change without taking a performance hit. For example. Let's say you need to perform Query A that returns a scalar integer. Then, later, the requirements change and you decide that it the results of the scalar is x that then, and only then, you need to perform another query. If you performed the first query in a SP, you could easily check the result of the first query and conditionally execute the 2nd SQL in the same SP. How would you do this efficiently in embedded SQL w/o perform a separate query or an unnecessary query? Here's an example: --This SP may return 1 or two queries. SELECT @CustCount = COUNT(*) FROM CUSTOMER IF @CustCount 10 SELECT * FROM PRODUCT Can this/what is the best way to do this in embedded SQL?

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  • Where do I put the links to my Javascript/jQuery files in my html file?

    - by Qlidnaque
    I recently noticed that some (not all) of my javascript and jQuery scripts wouldn't work unless I put the link for the .js files nearer towards the bottom of the page instead of the head area where I put my links for my .css files. From what I understand, javascript can go in either places and it is recommended to not be put in the header as it slows down the page loading process as well. At the same time, if I put it in the body tag of the html file, it looks somewhat messy and was wondering what the best practice is for putting .js files in a cleanly place. Should I always put it at the very bottom right before the ending body tag? How do professional web developers handle this?

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  • jquery scrollpane and scrollTo at same time

    - by steve
    Current demo here: http://www.studioimbrue.com/sites/eliotdudik I have the tabs system working wonderfully. I'm trying to get it so that if you're down a ways on the gallery and then click "foreword" or any menu item, it scrolls you back to 0,0. The current sliding code is as follows: $('#wrapper ul li').click(function() { $(window).scrollTo($(this).next('li'), 500, {offset: {top:0, left:-50}}, {easing:'easeOutExpo'} ); }); And I'm trying to add something like this under it: $('#menu li').click(function() { $(window).scrollTo(0,0, 500, {offset: {top:0, left:-50}}, {easing:'easeOutExpo'} ); }); It continues switching tabs, but it won't scroll back to the beginning!

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  • How to abort iPhone's NSXMLParser wait

    - by Wayne Lo
    When init the NSXLParser as below: NSXMLParser* xmlParser=[[NSXMLParser alloc] initWithContentsOfURL:[NSURL URLWithString:urlstring]]; if the server is down, it will wait for quite some time before the thread returns. It is really annoying even if I exit the application and restart the application, it will continue to wait with a black screen until it times out. How to I abort the init? Is there a better way to check whether the server is up before calling the parser? Thanks for helping.

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  • Web framework recommendation for python (webservices, auth, cache, ...)

    - by illuminated
    Hi all, Googling for the past week, but cannot finally decide which python web framework would be right for me. The web app I'm about to develop would be almost completely "pure" html with js (jQuery). Server side would have to do the following: authentication session management caching web services (almost all the on page data would be pulled with jQuery through web services) secured web services (through some form of authentication; this is for remote accessing some of the web services though other web apps, desktop/mobile applications) If there is a good tutorial/guide/idea for how to do this in Django I would be most thankfull if someone could share it as I already have experience with it. The thing that made me start thinking about other frameworks is Django's built in ORM. I know I could swap it with SQLAlchemy, but wouldn't go down that road if I'm not sure all the rest of the requirements is supported. Thanks all in advance.

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  • Passenger, Apache and avoiding page caching

    - by Michael Guterl
    I'm hosting a rack application with passenger and apache. The application is setup to cache the content of each request to the public directory after each request. This allows apache to serve the content directly as a static page for future requests. I would like to tell Apache, presumably through some rewrite rules that any requests with query parameters should not be cached, but instead passed down to the rack application. With a mongrel setup I would just redirect it to the balancer if it meets my rewrite conditions. How do you do the same with passenger?

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  • Getting an icon to always be unrotated regardless of parent rotations in WPF

    - by Jeff Moser
    Is there an easy way in WPF to specify the orientation of an icon (or Button, or any WPF object) so that it always effectively remains unrotated regardless of the rotations of the parent transforms? For example, I'd like to have an icon like this: + + + + + +++++ + + + + + + + However, if I dock it to the left side, it'd by default look like this: +++++ + + + +++++ +++ + and if I docked it to the right, it'd be like this: + +++ +++++ + + + +++++ Is there a way to make it always be: + + + + + +++++ + + + + + + + ? I know I could manually track where it's docked and rotate it appropriately, but I was wondering if there's a clever way to effectively give the icon "gravity" to always point down. Thanks!

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  • PHP Flatten Array with multiple leaf nodes

    - by tafaju
    What is the best way to flatten an array with multiple leaf nodes so that each full path to leaf is a distinct return? array("Object"=>array("Properties"=>array(1, 2))); to yield Object.Properties.1 Object.Properties.2 I'm able to flatten to Object.Properties.1 but 2 does not get processed with recursive function: function flattenArray($prefix, $array) { $result = array(); foreach ($array as $key => $value) { if (is_array($value)) $result = array_merge($result, flattenArray($prefix . $key . '.', $value)); else $result[$prefix . $key] = $value; } return $result; } I presume top down will not work when anticipating multiple leaf nodes, so either need some type of bottom up processing or a way to copy array for each leaf and process (althought that seems completely inefficient)

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