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• Checking that all libs and dlls are from the same build?

  - by unknownthreat

  I am developing a program in VS C++ 2008. Right now, I have a huge list of dll and lib dependencies and I am adding some more. I worry that when I need to update a dependency by building from source (where I have to manually replace built dlls and libs in the correct place), if I accidently forgot to replace something or vice versa, I may run into a compile and/or runtime problem. And finding which place goes wrong can be a bit difficult. So is there some sort of program or method out there that can suit this task to ease building a program with many updating dependencies?

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• Memory leak with preg_replace

  - by Silvio Donnini

  I'm using the preg_replace function to replace accents in a string, I'm working with UTF-8. I have incurred in what seems to be a memory leak, but I can't isolate the root cause, my code is rather simple: preg_replace( array_keys($aToNoAccents), array_values($aToNoAccents), $sText ); where $aToNoAccents is an associative array with entries like '~[A]~u' => 'A', '~[C]~u' => 'C',. My script prints this error for the above line: Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 3039 bytes) Obviously it's not a matter of increasing the allowed memory for PHP, (a 1Gb footprint is way off the scale of my application). Also, that line is executed thousands of times without problems but, just for some cases which are difficult to reproduce, it yields the error. Is anyone aware of memory problems with preg_replace and UTF-8 strings? Am I to use special care in passing actual parameters to such function? I'm using PHP 5.2.6-3 with Suhosin-Patch thanks Silvio

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• How can I learn the math necessary for working with computer vision?

  - by Duncan Benoit

  I know that computer vision involves a lot of math, but I need some tips about how programmers gain that knowledge. I've started to use the OpenCV library but I have some major problems in understanding how the math works in the algorithms. In college I have studied some math and we worked with matrices and derivatives, but I didn't pay to much attention to the subject. It seemed to be so difficult and useless from a programmer point of view. I suppose that there has to be some easy way to understand what a second derivative is without calculating an equation. (Derivatives are just an example) Do you have any tips for me about how can i gain such knowledge? A forum, book, link, advice, anything?

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• jQuery UI autocomplete examples

  - by RUtt

  I'm hoping someone can help with this, I'm having a real difficult time getting jQueryUI's autocomplete to work with ajax in a asp.net app (not MVC). I can get it to make the ajax call but I'm not doing something right handling the response. Just for starters I'm trying to have autocomplete make an ajax call to 'GetSuggestions.aspx' which will return a hard coded string. I have it where it will make the call to GetSuggestions.aspx but I can't get it to return anything to the page. (My next step would be to have 'GetSuggestions.asxp' return a list of name/value pairs but I'll tackle that next). I'm using the example from here: http://jqueryui.com/demos/autocomplete/#remote with the exception of using 'source: "GetSuggestions.aspx" (instead of "search.php")

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• [PHP] Sorting data in an array

  - by kwokwai

  Hi all, I got an array which has 7 types of fruit: $fruits = array( "lemon", "orange", "banana", "apple", "cherry", "apricot", "Blueberry" ); I don't know how to print out the data in a way that the outcome will like this: <A> Apple, Apricot (Note that Apricot is followed by Apple in alphabetic order) <B> Banana <C> Cherry <L> Lemon <O> Orange I am sorry that the question may be a bit difficult. But please kindly help if you could.

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• regex partial match for several different groups

  - by koral

  I need regexp to match string build from several groups (A is any letter, 9 is any digit): group 1 regex [A-Z]{1,2}[0-9]? A A9 AA9 group 2 regex [A-Z]{1,3}[0-9]? A AA AAA AAA9 group 3 regex [A-Z]{2,3}[0-9]?[A-Z]? AAA AA9 AA9A group 4 regex [0-9]{1,2}[A-Z]{1,2}[0-9]? 9A 9AA 9A9 99A9 Not each group must be present but there must be all in correct order - I mean (digit is group number): 1 12 123 1234 So if there is present group 3 there must me all preceding groups present also. As there are four groups (can be more), so alternative like ^[A-Z]{1,2}[0-9]{1}|[A-Z]{1,2}[0-9]{1}\s{1}[A-Z]{1}[0-9]?$ is not the best option as it would be complicated and difficult to maintain. Is there any solution with groups or something? The order of groups is important.

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• In which order I had to simplify this Boolean expression?

  - by user3662105

  I have to simplify this Boolean expression but i quite found it difficult since don't know in which order had to start with. the expression is: (x iff y) or (y iff z) if x found it little complicated to simplify since i don't know the order do I have to write it like: ((x iff y) or (y iff z)) if x or: (x iff y) or ((y iff z) if x) if you can give me a spot on this section of Boolean algebra. and I really will appreciate it if you gave me steps on how to simplify it. and had to say that I already tried a lot, solved a lot, tried wolfram alpha and others too even compared the results using truth tables but get different results and didn't know the right one from them. thanks in advance for your helping

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• Sum of Fibonacci numbers

  - by Rafal

  Hi, I'm rather new to Haskell. The problem is to find the sum of all even Fibonacci numbers not greater than 4 million. I can't use lists. If I understand correctly, the below solution is wrong, because it uses lists: my_sum = sum $ filter (even) $ takeWhile (< 4000000) fibs Where fibs is the list of all Fibonacci numbers. Somehow, I find it difficult not to think in Haskell in terms of lists. Could anyone guide me to a solution to this problem? Regards

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• design time usercontrols - I can't see anything!

  - by taglius

  newbie question, please forgive... I'm developing a Wpf UserControl that will eventually be bound to a business object. The usercontrol is little more than a series of laid out TextBlocks, and perhaps (later) an image or two. As I'm laying out the usercontrol, I can put dummy text into all the TextBlocks so I can see what the usercontrol will look like, but as soon as I change the text property to contain the Binding information: <TextBlock Margin="0,12.8,42,0" Name="lblLastName" FontSize="8" Height="19" VerticalAlignment="Top" Text="{Binding Mode=OneWay, Path=LastName}"/> Then I can no longer see the textbox, or any "placeholder" text. This makes it very difficult to adjust the location and sizes of all the controls on the UserControl. In WinFormas programming, you could set binding information independently of the Text property, so you could at least see the Placeholder text during design time development. It's going to be pretty hard to visually arrange a bunch of invisible TextBlocks! What's the standard solution for this?

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• Lack of IsNumeric function in C#

  - by Michael Kniskern

  One thing that has bothered me about C# since its release was the lack of a generic IsNumeric function. I know it is difficult to generate a one-stop solution to detrmine if a value is numeric. I have used the following solution in the past, but it is not the best practice because I am generating an exception to determine if the value is IsNumeric: public bool IsNumeric(string input) { try { int.Parse(input); return true; } catch { return false; } } Is this still the best way to approach this problem or is there a more efficient way to determine if a value is numeric in C#?

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• Cannot manage to have the main form to show scrollbars if bigger

  - by Philippe Watel

  Hi everyone I have developped an app on 22inch monitor at its max resolution when I run this on a laptop with a different ratio and a smaller resolution well the form is too big - to be expected but no scroll bar appear automaticaly to see the whole thing if needed I have tempered with all options but could not figure it out I have tried autoscroll of course but nothing I am sure it is not so difficult but I am stuck So if anyone could indicate me what properties to change I'll be most greatful or even better some easy strategy or components (even paying) to achieve a better screen resolution independance but the scrollbar would be great to start with Thanks & Regards Philippe Watel

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• Stopping Windows Mobile 6.5 tab reordering

  - by PaulH

  I have a C++ Visual Studio 2008 Windows Mobile 6.5 application that uses a tab control. I've noticed that depending on how careful you are with the stylus, when using the tab control you can accidentally re-order the tabs. It's difficult to do deliberately, but it's very easy to do when you're not trying. I assume this is a new "feature" of Windows Mobile 6.5 as it doesn't happen in Windows Mobile 6.1 with the same code. Is there a window style or something I can set that will lock the tab order such that people don't accidentally re-arrange them? Also, is there an MSDN page that describes this behavior and how it is supposed to work? I've looked, but have come up empty. Thanks, PaulH

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• php error not displayed

  - by devil eye

  I am new to php ; when ever ther is some error in my script ,the browser do not display error wirh line nymber but displays : Server error The website encountered an error while retrieving "http://localhost/gmailAPP/google-api-php-client/examples/calendar/simple.php". It may be down for maintenance or configured incorrectly. Here are some suggestions: Reload this webpage later. HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request. It is very difficult to debug the code with out error message and line number .Please help

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• How to represent double values as circles in a 2d matrix in java

  - by marco

  Hello, so I want to write a matrix explorer which enables me to reorder rows and columns of a matrix. For this porpouse I used the Jtable class. Now the problem that I have is that it is very difficult to reorder a matrix by looking at double values, so I would like to print the matrix not with the double values but with circles in which the radius of the circle represents the value. So that I can tell the difference between big values and small values quicker. Anybody has any idea how I can turn this double values into filled circles with JTable or any table class for that matter?

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• -sizeWithFont Functions Differently on Device

  - by LucasTizma

  So I am seemingly encountering some strange behavior when using NSString's -sizeWithFont family of method calls depending on whether or not I'm invoking it on the iPhone Simulator or an actual device. Simply enough, when the receiver of the -sizeWithFont method call is nil, the resulting CGSize passed back on the Simulator is {0, 0}. However, on the device, it is the size of the bounding rectangle I specified in the method call. See the following log statements: Simulator: someString: (null) someStringSize: {0, 0} Device: someString: (null) someStringSize: {185, 3.40282e+38} The behavior on the Simulator is what I would expect. Not that this issue is difficult to circumvent, but 1) I'm a little confused why this family of functions would behave differently on the Simulator and an actual device, and 2) why does calling a method on a nil receiving return a particular result? Thanks for any pointers or insight you guys can provide! EDIT: I suppose I should mention that I'm building against the 3.1 SDK.

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• Best ASP.NET reporting engine with custom reports creation ability

  - by Alex Konduforov

  We need to choose the reporting engine for our ASP.NET application. The main functional requirement is an ability for end users (not programmers, just normal users) to create custom reports. We will be using SQL Server as a database so I am aware of some options: SQL Server Reporting services, Crystal Reports, Active Reports, even WindwardReports. But frankly speaking I've never used any of those except Reporting services and it's quite difficult to choose which one suits the best to customer needs of custom reports creation. Is it possible to get some pros and cons for these options or at least your advice on what would be better to use in this case. Thanks a lot.

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• ASP MVC 2 : Custom display of a required form element based on ModelMetaData

  - by Nigel

  I have an MVC 2 application that utilises forms. The required fields within the form are set using attributes that update the model metadata. The form fields are created using the MVC HtmlHelper method : Html.EditorFor. This works fine so far as validation is concerned, but it seems that by default the required fields are not displayed to the user (for example by appending a * to the control). If I wanted to provide some custom means of displaying this fact to the user (lets immagine I want to change the background colour of the edit control for example), where is the best place to do it. Would I need to create a custom html helper to replace EditorFor? I tried but it seemed difficult to gain access to the metadata for the correct property. I already have a custom ModelMetaDataProvider so there is no problem adding it there if that is the correct place.

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• Resolving patch conflicts manually

  - by Antony Hatchkins

  I've downloaded a patch from some site and trying to apply it (twisted, python web framework). Several hunks failed. How do I automate manual patching process using vim? Details: I'm trying to automate the process of applying failed hunks. Many tiny changes, each about adding/removing 1-2 chars. Difficult to see. I Have to create two new temporary files and :diffthis them manually to see the difference. Yes, outside VCS. I can imagine a neat way to deal with it using git, but I would prefer to avoid creating git repo for that.

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• Ruby on Rails questionnaire tutorial?

  - by kovrik

  Can't find any tutorial for creating a simple questionnaire system on RoR (without using Finite State Machines). I think the Model is simple: Quizzes (have many Questions) Questions (belong to Quizzes, have many Choices, have one Answer) Choices (belong to Questions) Responses (belong to Users, belong to Questions) Users (have many Responses). User logs in (session is created), chooses some Quiz (Questions which belong to this Quiz are shown). User navigates through the Questions, makes his choice (Response), finishes the Quiz. Responses are compared with Answers. System shows some results. But as I'm new to Rails it is difficult for me to make it work properly. Any help? Maybe there is a tutorial where some similar app is created?

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• Software Requirement Specifications for Web Applications

  - by illuminatedtiger

  Hi guys, I'm looking for some guidance/books to read when it comes to creating a software requirement specification for a web application. For inspiration I have read some spec documents for desktop based applications. The documents I have read capture a systems functional requirements in use cases which tend to be rather data oriented with use cases centered around the various CRUD operations the application is intended to perform. I like this structure however I'm finding it rather difficult to marry it to what my web application needs to do, mostly reading data as opposed to manipulating it. I've had a go at writing some use cases however they all tend to boil down to "Search for item", "Change view of search results" or "User selects facet to refine search results". This doesn't sound quite right to me and makes me wonder if I'm going about this the right way. Are there planning differences between web based and desktop based applications?

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• Find model records by ID in the order the array of IDs were given

  - by defaye

  I have a query to get the IDs of people in a particular order, say: ids = [1, 3, 5, 9, 6, 2] I then want to fetch those people by Person.find(ids) But they are always fetched in numerical order, I know this by performing: people = Person.find(ids).map(&:id) => [1, 2, 3, 5, 6, 9] How can I run this query so that the order is the same as the order of the ids array? I made this task more difficult as I wanted to only perform the query to fetch people once, from the IDs given. So, performing multiple queries is out of the question. I tried something like: ids.each do |i| person = people.where('id = ?', i) But I don't think this works.

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• Where does complexity bloat from?

  - by AareP

  Many of our design decisions are based on our gut feeling about how to avoid complexity and bloating. Some of our complexity-fears are true, we have plenty of painful experience on throwing away deprecated code. Other times we learn that some particular task isn't really that complex as we though it to be. We notice for example that upkeeping 3000 lines of code in one file isn't that difficult... or that using special purpose "dirty flags" isn't really bad OO practice... or that in some cases it's more convenient to have 50 variables in one class that have 5 different classes with shared responsibilities... One friend has even stated that adding functions to the program isn't really adding complexity to your system. So, what do you think, where does bloated complexity creep from? Is it variable count, function count, code line count, code line count per function, or something else?

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• Title for postion needed, can someone help [closed]

  - by Jeffery

  I work in a large resort style rental community. Recently I was given a promotion, though my senior management has found it difficult to come up with a job title. I hold the position of concierge manager, spa manager and special events coordinator. So I would like to come up with a job title that would encompass the three areas. The suggested title was Hospitality Director. However it sounds like I would be working at a Hotel. Can someone please give me some ideas. Thank you in advance

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• Fill a rails form with a hashmap

  - by Ignace

  Hey, I have a difficult situation. I let the the user create a form through a Rich Text Editor and then I save this. So for example, I save this literally into my DB: http://pastebin.com/DNdeetJp (how can you post HTML here? It gets interpreted, so now I use pastebin...) On another page I wrap this in a form_tag and it gets presented as it should be. What I want to do is save this as a template and save the answers as a hashmap to my DB. This works well, but the problem is I want to recreate what checkbox/radiobutton/... is selected when the user goes back to the page. So I want to fill the form with the answers from the hashmap. Is there a way to use a 'dummy' model or something else to accomplish this? Thanks!

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• How do I use a variable argument number in a bash script?

  - by Corbin Tarrant

  #!/bin/bash # Script to output the total size of requested filetype recursively # Error out if no file types were provided if [ $# -lt 1 ] then echo "Syntax Error, Please provide at least one type, ex: sizeofTypes {filetype1} {filetype2}" exit 0 fi #set first filetype types="-name *."$1 #loop through additional filetypes and append num=1 while [ $num -lt $# ] do (( num++ )) types=$types' -o -name *.'$$num done echo "TYPES="$types find . -name '*.'$1 | xargs du -ch *.$1 | grep total The problem I'm having is right here: #loop through additional filetypes and append num=1 while [ $num -lt $# ] do (( num++ )) types=$types' -o -name *.'>>$$num<< done I simply want to iterate over all the arguments not including the first one, should be easy enough, but I'm having a difficult time figuring out how to make this work

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