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• How can I make Excel's MIN function ignore zeroes in a set?

  - by mfg

  In Excel, I have the following formula =(MIN(H69,H52,H35,H18)*(1/H18))*10 that is supposed to return the MIN of a range, and divide it by the current cell (*(1/H18) ), then multiply by 10. I am having difficulty with adding a type of NULLIF statement. I want to be able to have (the possibility for) blank rows, and have the MIN function ignore zero/blank fields while selecting the next lowest value (all are between 1.0-0.1). Is there a modifier i can apply to the MIN function to make it not compare zeroes in the MIN set? Is there a better funtion than MIN to use? This is to prevent the following situation: users will need to eliminate fields that are zeros from the form, theres 2 formula edits per entry, averaging 4 entries per use, so 8 possible errors per form use...

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• a full-screen UIImagePickerController with the right scale?

  - by Kay

  Hi, I'm customizing my image picker controller and I want to have a full-screen viewfinder. I think this might be pretty an old topic and I found an answer here: http://www.gorbster.net/blog/archives/144 But what I want to know is if there's a way to achieve this without distorting the scale of the image. If I scale that clipped preview image, I'm distorting its original x-y ratio, and I want to avoid it. Is there a way to prevent the preview image from being clipped so that I could retain the original 1200x1600 ratio? Thanks!

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• Programmer Health - how to avoid going blind and sick!

  - by stefanyko

  Hi All! this is my very first time here! so nice to meet you guys! ;-) When i was starting with this job, ( when i have chosed of doing this for the rest of my life) i have thinked also, one day, before or after, i would become blind or at least sick by drinking 5 or more coffee per day and of course by sitting down on my pc for hours!!! ;-\ From many years now, i'm asking myself how my eyes can stay in front o the monitor for so many hours per day!? well now i'm to a point of no return!!! i feel my eyes each day more tired, and my productivity is waning, but i can't change work now and i don't want do this!!!! what i need to do for prevent this to become a more serious problem for me and for my eyes!? any suggestion will be really appreciated!!! Thanks!

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• PHP urlencode() tacking on ?SID=xxx ... Why?

  - by retailevolved

  I am trying to output a simple link. This works great: $url = 'http://www.google.com'; echo $url; This doesn't work great: $url = 'http://www.google.com'; echo urlencode($url); The second example tacks on "?SID=xxx" to the end of the URL for some reason. How do I prevent this from happening? Note: The code to generate the URL has been changed to protect the innocent.

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• PHP protected classes and properties, protected from whom?

  - by Andrew Heath

  I'm just getting started with OOP PHP via PHP Object-Oriented Solutions and am a little curious about the notion of protection in OOP. The author clearly explains how protection works, but the bit about not wanting others to be able to change properties falls a bit flat. I'm having a hard time imagining a situation where it is ever possible to prevent others from altering your classes, since they could just open up your class.php and manually tweak whatever they pleased seeing as how PHP is always in plaintext. Caution: all of the above written by a beginner with a beginner's understanding of programming...

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• Block all content on a web page for people using an Adblock-type browser add-on/extension?

  - by Rudiger

  I wish to block ALL my content from any users using an ad-blocking browser extension (ie. Adblock Plus for Firefox, Adthwart for Chrome). How can I acheive this? Is there a server-side solution? Client-side? Edit 1 This question regards the detection of ad-blocking browser extensions: http://stackoverflow.com/questions/1185067/detecting-adblocking-software I'm concerned with post-detection action. Edit 2 A duplicate question was asked after mine, so I thought I'd link to it here: http://stackoverflow.com/questions/2002403/prevent-adblock-users-from-accessing-website

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• Generate non-identity primary key

  - by MikeWyatt

  My workplace doesn't use identity columns or GUIDs for primary keys. Instead, we retrieve "next IDs" from a table as needed, and increment the value for each insert. Unfortunatly for me, LINQ-TO-SQL appears to be optimized around using identity columns. So I need to query and update the "NextId" table whenever I perform an insert. For simplicity, I do this immediately creating the new object. Since all operations between creation of the data context and the call to SubmitChanges are part of one transaction, do I need to create a separate data context for retrieving next IDs? Each time I need an ID, I need to query and update a table inside a transaction to prevent multiple apps from grabbing the same value. Is a separate data context the only way, or is there something better I could try?

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• SVN Path Based Authorization: Granting listing access but not read access

  - by Jim

  Hello, We're using path-based-authorization module for Apache SVN. It all works fine, except that when users try to check out code they have access to, their SVN clients get confused if they don't have at least read access to the parent directories - all the way up to root. It works, but some clients just get confused sometimes. Because SVN path-based-authorization is recursively applied, we don't want to give all users read access to root, because that would give them access to all source code in the repository. It would, however, be acceptable if users could get directory listings (just not actual lines of code) for the entire repository. This would prevent the svn clients from getting confused. Does any one know how to grant permissions to get directory listings without granting permissions to the actual contents of the files? Thanks!

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• Embedded Linux: Memory Fragmentation

  - by waffleman

  In many embedded systems, memory fragmentation is a concern. Particularly, for software that runs for long periods of time (months, years, etc...). For many projects, the solution is to simply not use dynamic memory allocation such as malloc/free and new/delete. Global memory is used whenever possible and memory pools for types that are frequently allocated and deallocated are good strategies to avoid dynamic memory management use. In Embedded Linux how is this addressed? I see many libraries use dynamic memory. Is there mechanism that the OS uses to prevent memory fragmentation? Does it clean up the heap periodically? Or should one avoid using these libraries in an embedded environment?

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• What *collaborative* wireframing / UI mockup tools are out there?

  - by taco

  I'm looking for something that applies the collaboration focus (one location/URL, always up-to-date, multi-person online read/write access anywhere) of google docs / google spreadsheets to wireframing. Bonus points if, like Google Docs, it needs only a browser yet also works offline. More bonus points if it supports automatic revisions. Even more bonus points if you can hand out login-less 'invitation' URLs like Flickr does, instead of forcing people into signing up for accounts or using their home accounts. To start off, there's one called iPlotz, but it didn't enchant me -- ironically, mostly because of its akward UI, which can't hold a candle to omnigraffle (don't let that prevent you from giving it a try though). And no, paper prototyping, wonderful as it is, does not qualify: it does not combine being instantly globally shareable & editable very well :-)

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• jQuery stopPropagation bubble down

  - by Jasie

  I have a div with a link inside of it: <div id="myDiv"> <a href="http://www.lol.com">Lol</a> </div> Clicking the <div /> should go somewhere, but clicking the child <a /> should go to www.lol.com. I've seen from previous questions and the jQuery website that .stopPropagation prevents bubbling upwards, but how do I prevent a bubble downwards (isn't that what's necessary here?).

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• Why does my PDF ask for a password after being retrieved from Visual SourceSafe?

  - by Schnapple

  PREFACE: Yes we're moving away from VSS in the next few months. One of my web projects contains, as one of its files, a PDF. The PDF on our QA site is being pulled from VSS. A QA tester recently told me he's being prompted for a password when he tries to open it. VSS says the file I have on disk is different than the one it has, so I updated it, but afterwards it's still being shown as different. So basically VSS is mangling my PDF and the results are so wobbly that Adobe Acrobat Reader is confused and thinks it has a password. I've tried adding it as Auto-Detect and as Binary. Same results. Why does my PDF ask for a password after being retrieved from Visual SourceSafe and how can I prevent it?

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• Simulated click on "add more value" button of multi value cck field causes whole content form to sub

  - by ninja

  Hi I have a multi value cck field in my cck content type. I want to simulate click on "add another item" using jquery. which is like $('#edit-field-supp-quan-field-supp-quan-add-more').trigger('click'); but it causes whole content form to submit instead of adding extra multi value cck field. Manuall clicks are working perfectly. Can anyone tell me why behavior of manual clicks and simulated clicks are different. thanks ----Update ---- This is the code I was using:- $('#edit-field-freightamount-0-value').click(function(){ alert('hello'); $('#edit-field-supp-quan-field-supp-quan-add-more').trigger('click'); //$('.form-submit ahah-processed').trigger('click'); }); I actually intended to call this from inside some other function but I just wanted to test it before that . So i wrote this dummy function which is like if i click inside a texrfield it should simulate a click on "add more item" How do we prevent default action of click?

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• Consuming all touchEvents not preventing scrolling on the blackberry storm

  - by Some guy with a headache

  Hello, I am trying to make a custom control for the BlackBerry Storm using SDK v5.0. This control needs to disable scrolling while the user is dragging elements within a field. The problem is that even if I my control consumes every single touch event send to it, when the user lifts their finger off the screen it still flings up or down as if its finishing a scroll action. Does anyone know of a way to prevent this from happening or what I might be doing wrong ? Thank you.

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• Sending email from Drupal contact form, but GMail marks it as "Forged"

  - by James Shields

  Hi, My Drupal site sends email to a GMail account, but the emails sent all go into the Spam folder, and GMail puts up a bar with the message "This message was likely forged and did not originate from your account." Although I can create a filter to prevent them going to Spam, I want to start sending newsletters, and I suspect they'll have the same problem. I suspect the problem is with the way I've set up either PHP or Drupal to send mail. As far as I know it's just using the sendmail function. I've set the from address to "info@..." where ... is the site domain. Any tips on how I can make set up my outgoing mail so it won't be refused by GMail (and presumably other major mail providers)? Thanks, James

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• SQLAlchemy automatically converts str to unicode on commit

  - by Victor Stanciu

  Hello, When inserting an object into a database with SQLAlchemy, all it's properties that correspond to String() columns are automatically transformed from <type 'str'> to <type 'unicode'>. Is there a way to prevent this behavior? Here is the code: from sqlalchemy import create_engine, Table, Column, Integer, String, MetaData from sqlalchemy.orm import mapper, sessionmaker engine = create_engine('sqlite:///:memory:', echo=False) metadata = MetaData() table = Table('projects', metadata, Column('id', Integer, primary_key=True), Column('name', String(50)) ) class Project(object): def __init__(self, name): self.name = name mapper(Project, table) metadata.create_all(engine) session = sessionmaker(bind=engine)() project = Project("Lorem ipsum") print(type(project.name)) session.add(project) session.commit() print(type(project.name)) And here is the output: <type 'str'> <type 'unicode'> I know I should probably just work with unicode, but this would involve digging through some third-party code and I don't have the Python skills for that yet :)

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• Java and gstreamer-java initialisation error

  - by Mark

  I am building a small app which will play streaming audio from the internet in java (mainly internet radio stations). I have decided to use the gstreamer-java library for the sound, which uses JNA. I would like to include a check in the code, to see whether the gstreamer library has been initialised. When I have left the "Gst.init()" code out (to mimic when the library has not been initialised correctly), the application throws out the following messages: (process:21888): GLib-GObject-CRITICAL **: /build/buildd/glib2.0-2.22.3/gobject/gtype.c:2458: initialization assertion failed, use IA__g_type_init() prior to this function (process:21888): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed The app calls the gstreamer-java library. The error messages appear but the thread continues to run, hogging the CPU. Is there any way to catch the error or to add a check to prevent it from happening? An alternative would be to put the "Gst.init()" in the main class, but I am not sure if this would always guarantee the gstreamer library is initialised.

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• multiple occurences of HandleCreated for a single control

  - by Asher

  I’m using control that needs to be register to asynchronous events. The events will be raised in the UI thread using the ISynchronizeInvoke interface implemented by WinForms controls I can’t register to the event at the constructor because it will allow calling the event handler before the control is fully created. during which calls to ISynchronizeInvoke are not allowed. Solution to that problem is to use the perform the asynchronous event registration from an event handler to the HandleCreated instead of registering from the constructor. however, this poses another issue, in some scenations the HandleCreated event is raised multiple times as result of change at the control state. For example, each changing of the “RightToLeft” property causes a WMCreate message that cause raising the “HandleCreated” event. How can I prevent the multiply times of event rising? Is there is another way to know when the control is created and display for the first time? I can keep a boolean flag in the HandleCreated, however it feels like a hack and I am wondering if there is a better way to handle this issue.

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• How do I impliment a hidden field in a post form so users can't accidentally double post? (PHP/Mysql

  - by ggfan

  When users submit a form, they will sometimes click refresh or backspace then resubmit which causes multiple entries in mysql. How can i prevent mysql from allowing more than 1 of the same entry? People suggested a hidden field with a value, but how do I use that? <label for="state" class="styled">State:</label> <input type="text" id="state" name="state" value="<?php if (!empty($state)) echo $state; ?>" size="30" /><br /> //a hidden field of a certain value? ________________________________________ <input type="submit" value="Post Ad!" name="submit" /> //php to insert to mysql $query4 = "INSERT INTO posting (state) VALUES ('$state')"; mysqli_query($dbc, $query4);

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• Telerik RadControls RadFormDecorator - Tow Problem About Positioning

  - by LostLord

  hi my dear friends ... i am using asp.net with c# web app in vs 2008 problem 1: i do not know why Telerik RadControls- RadFormDecorator Moves some controls (such as Buttons or chech boxes) and changes their positioning up or down in my form after viewing in browser... i put those controls in a cell of a table ... but not help i had this problem about radajaxmanager and by setting UpdatePanelsRenderMode property to inline problem solved - but here there is no property like that... what is going on here? problem2: i decorated my buttons and chechboxes with radformdecorator (telerik radcontrols) control... when i click on a checkbox to set it to true or false so my webpage positioning goes to up (like when postback occurs , but this is not postback) how can i prevent this problem ? thanks for attention

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• Is the javaScript not part of the DOM?

  - by DKinzer

  Why is it that scripts can still function even after the code used to create them is removed from the DOM? I ran into a situation where I wanted to prevent a broken script from running (@see my post). In my attempt to come up with a solution I wrote an extension with the following line (just to see what would happen). //doc is passed here because this script is running as a firefox extension outside //of the document context. $('script', doc).remove(); I assumed that this would remove all the scripts from the DOM, which it did, and that therefore no scripts would run on the page, which is not the case. I would love to know more about what's behind this behavior.

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• Joomla Template Parameters and params.ini

  - by Moak

  I am using wamp and creating a Joomla template with changeable parameters. initially the message is The parameter file \templates\ssc_2010\params.ini is writable! once I make changes everything works as expected, except now i get the message: The parameter file \templates\ssc_2010\params.ini is unwritable! One solution is to brows to the directory, right click the file, select properties, and uncheck read-only. Again the file is writable but once I modify the parameters again it becomes read only again. I'm quite lazy and would like to prevent this from happening again, I've notice this happening in past projects, but now I have to work a lot with parameters so it becomes quite boring doing manual labor like that :P

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• Stored Procedure for Multi-Table Insert Error: Cannot Insert the Value Null into Column

  - by SidC

  Good Evening All, I've created the following stored procedure: CREATE PROCEDURE AddQuote -- Add the parameters for the stored procedure here AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; Declare @CompanyName nvarchar(50), @Addr nvarchar(50), @City nvarchar(50), @State nvarchar(2), @Zip nvarchar(5), @NeedDate datetime, @PartNumber float, @Qty int -- Insert statements for procedure here Insert into dbo.Customers (CompanyName, Address, City, State, ZipCode) Values (@CompanyName, @Addr, @City, @State, @Zip) Insert into dbo.Orders (NeedbyDate) Values(@NeedDate) Insert into dbo.OrderDetail (fkPartNumber,Qty) Values (@PartNumber,@Qty) END GO When I execute AddQuote, I receive an error stating: Msg 515, Level 16, State 2, Procedure AddQuote, Line 31 Cannot insert the value NULL into column 'ID', table 'Diel_inventory.dbo.OrderDetail'; column does not allow nulls. INSERT fails. The statement has been terminated. I understand that I've set Qty field to not allow nulls and want to continue doing so. However, are there other syntax changes I should make to ensure that this sproc works correctly? Thanks, Sid

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• jQuery: How do I stop the page being displayed until it's been processed?

  - by Alistair Christie

  I'm using jQuery to modify the style of some pages in a large set of existing Web pages. This works, but the problem I have is that, for longer pages, the page is briefly visible with the wrong styles before the javascript kicks in and transforms the page. I'm using this kind of thing (the alerts are just to emphasize the problem): $(document).ready(function(){ ... alert("at this point the page is visible unstyled"); $('body').addClass('myStyle'); alert("now page looks like I want it to"); ... } How do I prevent the browser from displaying the page until $(document).ready(function() completes?

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• External Javascript Timeout

  - by yummm

  I have a number of tracking scripts and web services installed on my website and I noticed when one of the services goes down, it still tries to call the external javascript file hosted on a different server. In Firefox, Chrome and other new browsers, there doesn't seem to be any issues when one of the services go down. However, in IE7 and IE8, my pages don't load all the way and time out before everything is displayed. Is there any way to add a time out on these javascript calls to prevent them from breaking my pages when they go down?

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