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• Checkbox in a Crystal Report

  - by JosephStyons

  What is the best way to display a checkbox in a Crystal Report? Example: My report has a box for "Male" and "Female", and one should be checked. My current workaround is to draw a small graphical square, and line it up with a formula which goes like this: if {table.gender} = "M" then "X" else " " This is a poor solution, because changing the font misaligns my "X" and the box around it, and it is absurdly tedious to squint at the screen and get a pixel-perfect alignment for every box (there are dozens). Does anyone have a better solution? I've thought about using the old-style terminal characters, but I'm not sure if they display properly in Crystal. Edit: I'm using Crystal XI.

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• Strange behavior of for loop in scheduler_tick

  - by EpsilonVector

  I'm working on Linux kernel 2.4 (homework) and I inserted the following code into the scheduler_tick function: if (unlikely(rt_task(p)) || (p->policy==SCHED_PROD && p->time_ran>=p->process_expected_time)) { /* * RR tasks need a special form of timeslice management. * FIFO tasks have no timeslices. */ if ((p->policy == SCHED_RR || /*change*/p->policy==SCHED_PROD) && !--p->time_slice) { /*changes*/ if (p->policy == SCHED_PROD){ for (i=0; i<5000; i++){ printk("I'm leeching off SCHED_RR code! %d\n", i); } } /*end changes*/ The addition was added for debugging purposes. For some reason this causes very weird behavior: when a SCHED_PROD process triggers this code (and consequently the loop that follows) the loop counts to about 4600 normally, but then goes back to 4600 each time it counts to 4800, and gets stuck in an infinite loop. What's going on?? EDIT: The i variable is my own.

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• Send and receive Array as GET/POST using querystring

  - by Vanwaril

  I've got the following code, but it doesn't seem to work: var post_req = { array: [ [ { param1: 'something', param2: 123 } ], [ ], [ ], [ { param2: 'something', param4: 1234, param1: 'hello' } ] ] }; var data_send = querystring.stringify(post_req); var request = client.request('POST', '/', headers); request.end(data_send); and if( req.method == 'POST' ) { req.addListener('data', function(chunk) { POST = querystring.parse(chunk); console.log(POST); } } I end up with 5 sub-arrays, corresponding to the 5 parameters in the objects but with extra '][' characters in their names: { array: [ { '][param1': 'something' } , { '][param2': '123' } , { '][param2': 'something' } , { '][param4': '1234' } , { '][param1': 'hello' } ] }

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• A linq join combined with a regex

  - by Geert Beckx

  Is it possible to combine these 2 queries or would this make my code too complex? Also I think there should be a performance gain by combining these queries since I think in the near future my source table could be over 11000 records. This is what i came up with so far : Dim lit As LiteralControl ' check characters not in alphabet Dim r As New Regex("^[^a-zA-Z]+") Dim query = From o In source.ToTable _ Where r.IsMatch(o.Field(Of String)("nam")) lit = New LiteralControl(String.Format("letter: {0}, count: {1}<br />", "0-9", query.Count)) plhAlpabetLinks.Controls.Add(lit) Dim q = From l In "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToLower.ToCharArray _ Group Join o In source.ToTable _ On l Equals o.Field(Of String)("nam").ToLowerInvariant(0) Into g = Group _ Select l, g.Count ' iterate the alphabet to generate all the links. For Each letter In q.AsEnumerable lit = New LiteralControl(String.Format("letter: {0}, count: {1}<br />", letter.l, letter.Count)) plhAlpabetLinks.Controls.Add(lit) Next Kind regards, G.

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• Opening an Excel file in c#

  - by Jan de Jager

  So there are a lot of questions regarding this method on SO, but none seem to answer my question. I firstly had an issue with the connectionstring (although it seems to work in other areas of my code correctly). This was resolved easily. Now the issue is with a simple SELECT query via a OLEDBCommand (Text) that keeps popping up the following error? "SELECT [Opportunity#],[BidManager],[Prob %],[Opportunity_Stage].[Opportunity_Status],[Term],[Sign Date] FROM [Sheet1$];" No value given for one or more required parameters. but their are no parameters???? Checked and double checked the columns names, but to no avail. Also tried removing the special characters from the column names, but still the same exception.

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• How to deal with the new line character in the Silverlight TextBox

  - by Ian Oakes

  When using a multi-line TextBox (AcceptsReturn="True") in Silverlight, line feeds are recorded as \r rather than \r\n. This is causing problems when the data is persisted and later exported to another format to be read by a Windows application. I was thinking of using a regular expression to replace any single \r characters with a \r\n, but I suck at regex's and couldn't get it to work. Because there may be a mixture of line endings just blindy replacing all \r with \r\n doesn't cut it. So two questions really... If regex is the way to go what's the correct pattern? Is there a way to get Silverlight to respect it's own Environment.NewLine character in TextBox's and have it insert \r\n rather just a single \r?

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• How to implement a "hidden" Android app?

  - by mawg

  I would like an application which is not readily apparent to casual perusal of the Android. How best to activate it and bring its screen to the fore? Can I detect a special dialing sequence, like *1234#? Or a hotkey combination? When activated, I guess I can pop up an anonymous screen which does not mention the app, but only asks for a password. If password is ok, then show the app. Any suggestions?

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• Proper Regex to find and replace escaped UTF-8 strings

  - by Piet Binnenbocht

  (edited) I am reading a JSON file that includes some UTF-8 characters that are encoded like this: "\uf36b". I am trying to write a RegExp to convert this to an HTML entity that looks like "&#x1F36B;". This displays the character correctly in my html page. I haven't been able to correctly display the character that should be associated with "\uf36b", especially when in a longer sentence that also includes other text. How can I write a regexp that replaces strings like "\uf4d6" and "\uf36b" but leaves other text alone? Example: var str = "I need \uf36b #chocolate"; This should be converted to: I need &#x1F36B; #chocolate;

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• Wordpress items catalogue plugin

  - by cosmorocket

  Could you please recommend me a plugin for Wordpress or may be a tiny standalone php script that allows to add some items with text info and a photo to a database, XML or just a text file from a special admin page. Then I need to fetch these items from the source and show in the page some way. To understand the task better, please check this page http://treaky.com/denis/products-classiccare.html. There is a main area that shows items but now it's just a dummy html to see how it should look in the end. Thank you!

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• How can I deploy a Perl/Python/Ruby script without installing an interpreter?

  - by Brian G

  I want to write a piece of software which is essentially a regex data scrubber. I am going to take a contact list in CSV and remove all non-word characters and such from the person's name. This project has Perl written all over it but my client base is largely non-technical and installing Perl on Windows would not be worth it for them. Any ideas on how I can use a Perl/Python/Ruby type language without all the headaches of getting the interpreter on their computer? Thought about web for a second but it would not work for business reasons.

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• How is the "click to view more" function implemented?

  - by bobo

  We often see websites that display first few lines of an article and then append ... [More] so that people who are interested in can click on it to view the full article. To implement this functionality, we first need to find out where the article text should be cut to append the ... [More]. Since there must be some HTML/ CSS coupled with the article text, we must remember to ignore them when calculating the length of the text. But there is something I just can't figure it out, if more than one language is mixed in the first few lines of the article text, the length of the text will be very difficult to calculate since the characters can be of variable length. How should we solve this problem?

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• What is a good way of checking to see if a particular user may access a particular file?

  - by Rising Star

  I am working on application which runs as a special unprivileged user. I would like to be able to easily check to see if the user can read a given file. It seems like this should be easy, even when I go into the file in Windows Explorer and see that the read permission is checked, it sometimes seems that there is still something preventing the user from reading the file (such as a parent directory that the user cannot browse) when I try to read it as the user programmatically. The user has no console logon permission, so I can't just log in as the user and try to read the file. So... If I want to know, "Does UserBob have access to file c:\specialPath\specialFile, what is an easy way to find out? BTW, my environment is Windows Server 2003.

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• Correct syntax for matching a string inside a variable against an array

  - by Jamex

  Hi, I have a variable, $var, that contains a string of characters, this is a dynamic variable that contains the values from inputs. $var could be 'abc', or $var could be 'blu', I want to match the string inside variable against an array, and return all the matches. $array = array("blue", "red", "green"); What is the correct syntax for writing the code in php, my rough code is below $match = preg_grep($var, $array); (incorrect syntax of course) I tried to put quotes and escape slashes, but so far no luck. Any suggestion? TIA

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• Call function from hyperlink defined in qTip content

  - by user327066

  Hi, I am trying to call a javascript function from a hyperlink that is part of the content in a qTip. I keep getting the error my function is not defined but it is defined within the page and can be called outside of qTip. Below is what I have so far: function addTooltip() { $("#mycontent").qtip({ content: 'mylink' }); } function tester() { alert("hello world"); } If I put the alert within the onClick attribute, I at least get the alert to work. Is there some special way of calling a function from within qTip? Any help is appreciated. Thanks.

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• Time complexity O() of isPalindrome()

  - by Aran

  I have this method, isPalindrome(), and I am trying to find the time complexity of it, and also rewrite the code more efficiently. boolean isPalindrome(String s) { boolean bP = true; for(int i=0; i<s.length(); i++) { if(s.charAt(i) != s.charAt(s.length()-i-1)) { bP = false; } } return bP; } Now I know this code checks the string's characters to see whether it is the same as the one before it and if it is then it doesn't change bP. And I think I know that the operations are s.length(), s.charAt(i) and s.charAt(s.length()-i-!)). Making the time-complexity O(N + 3), I think? This correct, if not what is it and how is that figured out. Also to make this more efficient, would it be good to store the character in temporary strings?

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• reading binary code of a file...in PHP

  - by Val

  How can I read the binary code(to get the 1s and 0s) of a file. $filename = "something.mp3"; $handle = fopen($filename, "rb"); $contents = fread($handle, filesize($filename)); fclose($handle); I tried this but it shows some strange characters... i presume that this is the formated binary...? I was hoping to get the 1's and 0's instead.... also i am not looking only .mp3 files it could be anything .e.g: .txt , .doc , .mp4, .php .jpg,.png etc.... Thanks

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• Use google analytics custom events for feedback form.

  - by chacko

  I was thinking of having a simple feedback form in my website. It would be something like: Your Feedback will help us improve. [ ] and then a textfield/textarea where the user can type (let's say) up to 100 characters of feedback. Rather than handling it all myself on the serverside I was thinking to use google analytics (since my site is already wireup) and everytime a user writes a comment send a custom event to google analytics. I think it might work. Can people suggest a better approach or point out any problem with this idea thanks

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• Android Canvas.DrawBitmap without blurring/AntiAliasing?

  - by Sh33p

  I'm trying to make an android game using sprites, (or very pixelated characters, backgrounds etc.). I draw them on the canvas like so... matrix.preScale(xrat,yrat); canvas.drawBitmap(img, matrix, null); Where img is the Bitmap and the xrat and yrat are the scales. My problem is that when I test, the Bitmap is blurry or anti-aliased, is there a way to prevent this? The rigid-blocky art style of the game will be ruined if the blocks are blurry. Any (ANY) help appreciated!

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• Markdown to text/plain and text/html for multipart email

  - by fphilipe

  I’m looking for a solution to send DRY multipart emails in Rails. With DRY I mean that the content for the mail is only defined once. I’ve thought about some possible solutions but haven’t found any existing implementations. The solutions I’ve thought about are: load the text from I18n and apply Markdown for the html mail and apply Markdown with a special output type for the text mail where links are put in parenthesis after the link text bold, italic and other formatting that doesn't make sense are removed ordered and unordered lists are maintained generate only the html mail and convert that to text according to the above conditions Is there any available solution out there? Which one is probably the better way to do it?

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• Split String in C# without delimiter (sort of)

  - by Zach

  Hi, I want to split a string in C#.NET that looks like this: string Letters = "hello"; and put each letter (h, e, l, l, o) into an array or ArrayList. I have no idea what to use as the delimiter in String.Split(delimiter). I can do it if the original string has commas (or anything else): string Letters = "H,e,l,l,o"; string[] AllLettersArray = Letters.Split(",".ToCharArray()); But I have no idea what to use in a case with (supposedly) no delimiter. Is there a special character like Environment.Newline? Thanks.

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• How to program three editions Light, Pro, Ultimate in one solution

  - by Henry99

  I'd like to know how best to program three different editions of my C# ASP.NET 3.5 application in VS2008 Professional (which includes a web deployment project). I have a Light, Pro and Ultimate edition (or version) of my application. At the moment I've put all in one solution with three build versions in configuration manager and I use preprocessor directives all over the code (there are around 20 such constructs in some ten thousand lines of code, so it's overseeable): #if light //light code #endif #if pro //pro code #endif //etc... I've read in stackoverflow for hours and thought to encounter how e.g. Microsoft does this with its different Windows editions, but did not find what I expected. Somewhere there is a heavy discussion about if preprocessor directives are evil. What I like with those #if-directives is: the side-by-side code of differences, so I will understand the code for the different editions after six months and the special benefit to NOT give out compiled code of other versions to the customer. OK, long explication, repeated question: What's the best way to go?

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• Html POST and return the same form with the values

  - by vtortola

  Hi, I'm learning web development, and I don't know how do this simple thing. I've a html form with "text", "radio" and "checkbox" controls, that POST the values to the server and it saves them, for example in a file. I save the POST in raw format: key=value&key=value&key=value&key=value and I'd like that when the user open the form back, return the form with the saved values already in the controls. Is there any neat way to do this? Or should I parse the POST string and set the values one by one in the controls at the server level? I think, I could return the saved data in a hidden input control, and after with a javascript I could do a getElementById(key) and set the value to each input control... but do I need to put the post string in a special format? How would you do it? Thank you in advance.

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• Actionscript blur/shadows/glows how heavy are they on the processor?

  - by Fahim Akhter

  Hi, I have say 10 items in a particular space, If I apply glows and drop shadows to all of them and all of these items are usually static. Other characters do move around them too. So I'm just wondering would it be wise to use vectors with actionscript blurs and glows. Or to have a PNG? and if I cannot have a PNG and have to work with vectors with glows/blurs/shadows. Would they be too heavy on the processor?

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• Sex appeal of computer graphics: movie like UI systems [closed]

  - by anon

  It's well know that 1) the way computers actually work 2) the way computers are protrayed in movies are not the same. In particular (2) looks much much cooler than (1). Where can I learn more about making flashy, superficially useful but deepdown useless fancy graphics UIs like that? It's almost in the realm of "hollywood special effects" -- like fire/smoke/fire, but I don't want natural phenomenon; I want user interfaces. Concrete question: where can I learn about creating flashy, cool looking (though not necessairly useful) user interfaces? [Perferably in OpenGL]

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• Crystal Report with mutliple row columns.

  - by Jack

  I'm not sure if the title properly explains what I'm trying to do. I'm trying to move from using SQL Reporting Services to a Crystal Reports Web App. I've gotten some reports to design properly because they are simple cross-tab reports that require nothing special. I'm running into a little problem of a user matrix report. Here's how the report looks on SQL Reporting Services: group1 group2 group3 username1 first1 last1 title1 X X username2 first2 last2 title2 X X 2 1 1 Normally in VS2008 with a SQL rdl, I would right click on the row and Insert Column. However, i don't see a way to do this in Crystal Reports. I've tried setting up multiple row groups, but that adds mutliple groupings like: group1 Total ... Username Total ... first Total ... last ...

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