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• extract payload from tcpflow output

  - by Felipe Alvarez

  Tcpflow outputs a bunch of files, many of which are HTTP responses from a web server. Inside, they contain HTTP headers, including Content-type: , and other important ones. I'm trying to write a script that can extract just the payload data (i.e. image/jpeg; text/html; et al.) and save it to a file [optional: with an appropriate name and file extension]. The EOL chars are \r\n (CRLF) and so this makes it difficult to use in GNU distros (in my experiences). I've been trying something along the lines of: sed /HTTP/,/^$/d To delete all text from the the beginning of HTTP (incl) to the end of \r\n\r\n (incl) but I have found no luck. I'm looking for help from anyone with good experience in sed and/or awk. I have zero experience with Perl, please I'd prefer to use common GNU command line utilities for this Find a sample tcpflow output file here. Thanks, Felipe

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• update query on multiple tables

  - by jon

  I have a schema like : employees (eno, ename, zip, hdate) customers (cno, cnmae, street, zip, phone) zipcodes (zip, city) where zip is pk in zipcodes and fk in other tables. I have to write an update query which updates all the occurence of zipcode 4994 to 1234 throughout the database. update zipcodes,customers,employees set zip = 0 where customers.zip = zipcodes.zip and employees.zip = zipcodes.zip; but i know i am not doing it right. Is there a way to update all the tables zip ina single update query?

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• save selected row in UITableView after reloadData

  - by vinnitu

  I write custom jabber client in iphone. I use xmppframework as engine. And I have UITableViewController with NSMutableArray for repesent contact list. When i receive(or somebody change it contents) roster (aka contact list) i wanna change UITableView items (add/remove/modify). So if User work with listView at time when list updates by [items addObject:newItem]; [self.tableView reloadData]; user lost current selection item. So, my question is howto save (if possible, i mean if given selected item not removed) current select item after reloadData? Thx.

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• jQuery event handlers always execute in order they were bound - any way around this?

  - by asgeo1

  It can be anoying that jQuery event handlers always execute in the order they were bound. For example: $('span').click(doStuff1()); $('span').click(doStuff2()); clicking on the span will cause doStuff1() to fire, followed by doStuff2(). At the time I bind doStuff2(), I would like the option to bind it before doStuff1(), but there doesn't appear to be any easy way to do this. I suppose most people would say, just write the code like this: $('span').click(function (){ doStuff2(); doStuff1(); }); But this is just a simple example - in practise it is not always convienient to do that. There are situations when you want to bind an event, and the object you are binding to already has events. And in this case you may simply want the new event to fire before any other existing events. So what is the best way to achieve this in jQuery?

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• Specify an inline callback function as an argument.

  - by Matthias Vance

  LS, Let me first explain what I'm trying to achieve using some pseudo-code (JavaScript). // Declare our function that takes a callback as as an argument, and calls the callback with true. B(func) { func(true); } // Call the function B(function(bool success) { /* code that uses success */ }); I hope this says it all. If not, please comment on my question so I can write a little more to clarify my issue. What I want is to have code like this in C++. I have tried to use lambda functions, but I was unable to specify a parameter type for those. Kind regards, Matthias Vance

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• SPWeb.Webs, Site vs SubSite

  - by noob.spt

  Hi, I have a very basic question here. I am confused between SPSite. SiteCollection and SPWeb. So my understanding is (or what I could research on this) that, http://My_server TOP Level SIte or SPWEbApplication http://My_server/My_site Site Collection or SPSite Now a site under SPSite that will be referenced through SPWeb. So what are we getting when using SPWeb.Webs. What is a Subsite? Please let me know if I need to rephrase the question or more info is needed. Thanks. SPWeb mySite = SPContext.Current.Web; SPWebCollection sites = mySite.Webs; foreach (SPWeb subSite in sites) { Response.Write(SPEncode.HtmlEncode(subSite.Title) + "<BR>"); }

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• Can I pass data into a HashMap<String,Object> from JSP to a JavaBean?

  - by Parris

  Hi Everyone, I am just starting out with JSP, Java, etc web development... I would love to use some sort of framework, but for this project I can't do that. In any case I want to potentially pass essentially limitless data (for flexibility) to my javabeans. My idea was if I can have key value pairs that would really easy. The values will always be strings or integers. HashMap seems ideal in this case. Is this possible? Any ideas? Can I do this with JSP Bean tags or should I write scriptlets? Thanks!!!

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• How long should it take for someone to be able to type code from memory?

  - by LordSnoutimus

  Hi, I understand that this question could be answered with a simple sentence and that it may be viewed as subjective, however, I am a young student who is interested in pursuing a career in programming and wondered how long it took some of you to get to the level of experience you are now?. I ask this because I am currently working on building an application in Java on the Android platform and it bothers me that I am constantly having to look up how to write a certain section of code in my application such as writing to a database, or how the if loop should be structured. My question really is, how long did it take for you to become experienced enough to actually know exactly how your next line of code was going to look, before you even wrote it?

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• When is a PHP project too small for a framework?

  - by Jonathan Nicol

  I'm about to start on a small, static website project: no database or CMS required. Basically, a brochure website. I used the CodeIgniter framework recently to develop a full-blown web application, and I'm wondering if it appropriate to also use CI for smaller, simpler sites. Typically for a static brochure site I would write regular PHP pages with a few includes thrown in to save on repetition (i.e. HTML with a sprinking of PHP), but this time around I'm wondering if my new friend CodeIgniter might be able to streamline the development process. Is it sensible to consider a framework for such a simple project, or is it overkill? I'm worried that I might be the proverbial carpenter whose only tool is a hammer, and sees every problem as a nail!

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• Is it possible to have AVFramework and AudioToolbox framework in one app?

  - by Satyam

  I'm trying to write develop audio related application. In that, I'm using AudioToolBox framework for recording the sound. And I'm using AVFramework to play soudns. When app is stared, it will play some mp3 file using AVFramework. And also initializes Audiotoolbox. In simulator, I'm able to record and play. But when I'm testing it on iPhone, I'm getting following error for initializing AudioToolBox. 2009-12-11 22:25:51.599 StoryBook[807:207] AudioRecorder init AudioSessionInitialize failed with error: 1768843636 Can some one tell me whether we can use both AV as well as Audio Toolbox frame works in one application? Why I'm getting that error?

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• Is it safe to use Select Top and Delete Top in sequence?

  - by Rob Nicholson

  I often write T-SQL loops that look like this While Exists (Select * From #MyTable) Begin Declare @ID int, @Word nvarchar(max) Select Top 1 @ID=ID, @Word=[Word] From #MyTable -- Do something -- Delete #MyTable Where ID=@ID End Works a treat but I noticed the new Delete Top function which would be useful when #MyTable is just a list of strings. In this case, would this work: While Exists (Select * From #MyTable) Begin Declare @Word nvarchar(max) Select Top 1 @Word=[Word] From #MyTable -- Do something -- Delete Top(1) #MyTable End Well yes, it works in my test script but is this safe? Will Select Top 1 and Delete Top(1) always refer to the same record or is Top a little more vague. Thanks, Rob.

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• Why `#import("dart:unittest")` can't run?

  - by Freewind

  I write some dart test code: #import("dart:unittest"); main() { test('this is a test', () { int x = 2+3; expect(x).equals(5); }); } It doesn't display any error in dart editor, but when I press the "run" button, it reports: Do not know how to load 'dart:unittest''file:///home/freewind/dev/dart/editor /samples/shuzu.org/test/model_test.dart': Error: line 1 pos 1: library handler failed #import("dart:unittest"); ^ I see there is a "dart:unittest" library in my dart-sdk. Why it can't be run?

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• avoid dialog box when netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); is

  - by ganapati

  Hi i got to create.write,read a local file within the javascript using XPCom. For that i have included the below line at the beginning of javascript. netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); But when the above script executes, a dialog box appears saying **Internet security** A script from "file://" is requesting enhanced abilities that are UNSAFE and could be used to compromise your machine or data: Run or install software on your machine Allow these abilities only if you trust this source to be free of viruses or malicious programs. ______ _______ | Deny | | Allow | -------- --------- But i dont want the dialog box to be appeared.How can i avoid it?. Thanks.

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• Should developers know how to use office suites?

  - by systempuntoout

  How deep is your knowledge on Office suites? Personally i don't like them, i hate create and manage word documents, excel datasheets etc. etc. I'm not talking about opening a word document and write some text or calculate sum and division on excel; i'm talking about advanced features like revisions, vba macros and so on. I have a co-worker, actually he's a talented functional analyst, that don't know anything about programming but he's kind a monster guru on Microsoft Office suite. When he sits on my desk and asks me to open and modify some of his hardly complicated Microsoft Excel multicolor multipivotal recursive datasheet, ehm, i feel like a baby in front of a nuclear plant console.It' not a great feeling if you know what i mean. As programmer, do you feel guilty about not knowing office suites enough?

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• Rails XML Builder - Code refactoring

  - by Vijay Dev

  I have written the following code in my Rails app to generate XML. I am using Aptana IDE to do Rails development and the IDE shows a warning that the code structure is identical in both the blocks. What changes can be done to the code to remove the duplicity in structure? Is there any other way to write the same? xml.roles do @rolesList.each do |r| xml.role(:id => r["role_id"], :name => r["role_name"]) end end xml.levels do @levelsList.each do |lvl| xml.level(:id => lvl["level_id"], :name => lvl["level_name"]) end end

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• Insert element into a tree from a list in Standard ML

  - by vichet

  I have just started to learn SML on my own and get stuck with a question from the tutorial. Let say I have: tree data type datatype node of (tree*int*tree) | null insert function fun insert (newItem, null) = node (null, newItem, null) | insert (newItem, node (left, oldItem, right)) = if (newItem <= oldItem) then node (insert(newItem,left),oldItem, right) else node (left, oldItem, insert(newItem, right) an integer list val intList = [19,23,21,100,2]; my question is how can I add write a function to loop through each element in the list and add to a tree? Your answer is really appreciated.

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• Reading HttpURLConnection InputStream - manual buffer or BufferedInputStream?

  - by stormin986

  When reading the InputStream of an HttpURLConnection, is there any reason to use one of the following over the other? I've seen both used in examples. Manual Buffer: while ((length = inputStream.read(buffer)) > 0) { os.write(buf, 0, ret); } BufferedInputStream is = http.getInputStream(); bis = new BufferedInputStream(is); ByteArrayBuffer baf = new ByteArrayBuffer(50); int current = 0; while ((current = bis.read()) != -1) { baf.append(current); } EDIT I'm still new to HTTP in general but one consideration that comes to mind is that if I am using a persistent HTTP connection, I can't just read until the input stream is empty right? In that case, wouldn't I need to read the message length and just read the input stream for that length? And similarly, if NOT using a persistent connection, is the code I included 100% good to go in terms of reading the stream properly?

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• Does UIWebView support javascript-based double-click events?

  - by Eric

  As usual, I'm trying to do something the easiest way possible, in this case implement a double-tap handler on a UIWebView like so: <div id="foo" ondblclick="clickHandler(this);" ... > It works fine in Safari and Firefox, and I know the code containing clickHandler is loading on the iPhone thanks to a now-annoying alert stmt at the end of loading. If I change ondblclick to onclick it works on both the device and the simulator. From reading similar queries it would seem that I need to intercept the taps in ... and then run my JavaScript code with the stringByEvaluatingJavaScriptFromString method, but then how do I know the JS id of the target? I no like that, would rather write a pure HTML/DOM/JS solution. Or since my app is about 80% web content, should I be using phonegap instead?

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• pointer reference type

  - by Codenotguru

  I am trying to write a function that takes a pointer argument, modifies what the pointer points to, and then returns the destination of the pointer as a reference. I am gettin the following error: cannot convert int***' toint*' in return| Code: #include <iostream> using namespace std; int* increment(int** i) { i++; return &i;} int main() { int a=24; int *p=&a; int *p2; p2=increment(&p); cout<<p2; } Thanks for helping!

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• strchr in objective C?

  - by Brian Postow

  I'm trying to write the equivalent of strchr, but with NSStrings... I've currently got this: Boolean nsstrchr(NSString* s, char c) { NSString *tmps = [NSString stringWithFormat: @"%c", c]; NSCharacterSet *cSet = [NSCharacterSet characterSetWithCharactersInString: tmps]; NSRange rg = [s rangeOfCharacterFromSet: cSet]; return rg.location != NSNotFound; } This seems needlessly complex... Is there a way to do this (preferably, one that doesn't involve turning the NSString into a cstring which doubles the run time, or writing it myself using characterAtIndex:... Am I missing some obvious method in the NSString description?

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• LINQ to SQL join when there aren't results

  - by Boarder2

  Given the following database structure I'm trying to write a LINQ query that will return images grouped by tags it's associated with. So far I've got this: var images = from img in db.Images join imgTags in db.ImageTags on img.idImage equals imgTags.idImage join t in db.Tags on imgTags.idTag equals t.idTag where img.OCRData.Contains(searchText.Text) group img by new { t.TagName } into aGroup select new { GroupName = aGroup.Key.TagName, Items = from x in aGroup select new ImageFragment() { ImageID = x.idImage, ScanDate = x.ScanTime } }; Which works great. However, I also want to return Images that do not have any tags associated with them in a group of "(Untagged)" or something. I can't wrap my head around how I would do this without inserting a default tag for every image and that seems like generally not a very good solution.

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• What's the best method to be overloaded in ViewPage for inserting some script to all ViewPage?

  - by Soul_Master

  I want to insert some script that is required for my JavaScript library in all view pages. I know that Asp.net MVC is built on Asp.net Framework. Therefore, I can override many methods in “System.Web.UI.Page” class that is a parent of “System.Web.Mvc.ViewPage” class. Nevertheless, I can do it by override Render method but it makes all view pages be invalid for XHTML 1.0 strict. Correct JavaScript must be placed in header tag of HTML document. public class ViewPage<TModel> : ViewPage where TModel : class { protected override void Render(System.Web.UI.HtmlTextWriter writer) { base.Render(writer); writer.Write("<script type='text/javascript>applicationPath = window.applicationPath = 'somePath';</script>"); } } Thanks, PS. I know I can create some code in each master page for doing that. However, it is a quite complicate for other developers to start using my JavaScript source code.

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• Using stored procedure in crystal report 8.5?

  - by odiseh

  I have made a new report using Crystal Reports 8.5 (report1) which uses a stored procedure as its data source. The stored procedure has 2 input parameters (@p1 and @p2) and when I enter some test data for @p1 and @p2 within crystal report IDE , every thing is all right. Then, I added the report1 in visual basic 6.0 IDE and added a new form (form1) and a crystal report viewer control on form1. Now please help me: I wanna to show the report1. What codes exactly should I write to show it?How send data user has entered to the stored procedure parameters via application? I also get this error messsage: the server has not been opened yet" What's wrong?

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• Marshal struct to unmanaged array

  - by Pedro

  Hi guys, I have a C# struct to represent a cartesian vector, something like this: public struct Vector { private double x; private double y; private double z; //Some properties/methods } Now I have an unmanaged C dll that I need to call with P/Invoke. Some methods expect a double[3] parameter. The unmanaged C signature is something like void Cross(double a[3], double b[3], double c[3]); Is there any way to set up a P/Invoke signature so I can pass instances of my Vector struct and marshal them transparently to unmanaged double[3]? I would also need bidirectional marshaling as the unmanaged function needs to write the output to the argument array, so I guess I would need to marshal as LpArray. Any ideas? Thanks Pedro

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• Sudoku solver evaluation function

  - by Rich

  Hi, So I'm trying to write a simple genetic algorithm for solving a sudoku (not the most efficient way, I know, but it's just to practice evolutionary algorithms). I'm having some problems coming up with an efficient evaluation function to test if the puzzle is solved or not and how many errors there are. My first instinct would be to check if each row and column of the matrix (doing it in octave, which is similar to matlab) have unique elements by ordering them, checking for duplicates and then putting them back the way they were, which seems long winded. Any thoughts? Sorry if this has been asked before...

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