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• Al Zimmermann's Son of Darts

  - by polygenelubricants

  There's about 2 months left in Al Zimmermann's Son of Darts programming contest, and I'd like to improve my standing (currently in the 60s) to something more respectable. I'd like to get some ideas from the great community of stackoverflow on how best to approach this problem. The contest problem is known as the Global Postage Stamp Problem in literatures. I don't have much experience with optimization algorithms (I know of hillclimbing and simulated annealing in concept only from college), and in fact the program that I have right now is basically sheer brute force, which of course isn't feasible for the larger search spaces. Here are some papers on the subject: A Postage Stamp Problem (Alter & Barnett, 1980) Algorithms for Computing the h-Range of the Postage Stamp Problem (Mossige, 1981) A Postage Stamp Problem (Lunnon, 1986) Two New Techniques for Computing Extremal h-bases Ak (Challis, 1992) Any hints and suggestions are welcome. Also, feel free to direct me to the proper site if stackoverflow isn't it.

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• What's in your .emacs?

  - by A. Rex

  I've switched computers a few times recently, and somewhere along the way I lost my .emacs. I'm trying to build it up again, but while I'm at it, I thought I'd pick up other good configurations that other people use. So, if you use Emacs, what's in your .emacs? Mine is pretty barren right now, containing only: Global font-lock-mode! (global-font-lock-mode 1) My personal preferences with respect to indentation, tabs, and spaces. Use cperl-mode instead of perl-mode. A shortcut for compilation. What do you think is useful?

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• Groupted table view cells not loading.

  - by Tejaswi Yerukalapudi

  Hi, I'm working on creating a grouped table view. The data is being loaded alright, but in the grouped view there are a lot of white empty spaces. They get populated after I scroll up and down a few times. Help? Here's my getCellForRowIndexAtPath method: static NSString *Id= @"CustomDiagChargeID"; CustomCellDiagCharges *cell = (CustomCellDiagCharges *)[tableView dequeueReusableCellWithIdentifier:Id]; if(cell == nil) { NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomCellDiagCharges" owner:self options:nil]; for (id oneObject in nib) { if([oneObject isKindOfClass:[CustomCellDiagCharges class]]) cell = (CustomCellDiagCharges *) oneObject; } } NSUInteger row = [indexPath row]; DiagDetails *rowData = [preferences getDiagElementAt:indexPath.section row:row]; cell.code.text = rowData.ICD9Code; cell.desc.text = rowData.ICD9Desc; return cell; Thanks, Teja.

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• RegEx match open tags except XHTML self-contained tags

  - by Jeff

  I need to match all of these opening tags: <p> <a href="foo"> But not these: <br /> <hr class="foo" /> I came up with this and wanted to make sure I've got it right. I am only capturing the a-z. <([a-z]+) *[^/]*?> I believe it says: Find a less-than, then Find (and capture) a-z one or more times, then Find zero or more spaces, then Find any character zero or more times, greedy, except /, then Find a greater-than Do I have that right? And more importantly, what do you think? =) EDIT: Hmm, which answer to mark as correct? For the record, ALL the answers are appreciated. Many thanks!

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• Querying for names

  - by Sai

  I have a table (say "Demographics") on SQL Server. In this table are the following columns "LastName", "FirstName", "MiddleName", "Prefix" , "Suffix". I have one textbox to search for them on a webpage. My question: Whats a good design strategy for queries where the user could be searching for various combinations of names including last names that have spaces e.g. "Smith James Jr." . Our customers store Jr. sometimes in suffix and sometimes just tack it to lastname. Sometimes Smith James Jr could be the entire last name.

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• Metalanguage like BNF or XML-Schema to validate a tree-instance against a tree-model

  - by Stefan

  Hi! I'm implementing a new machine learning algorithm in Java that extracts a prototype datastructure from a set of structured datasets (tree-structure). As im developing a generic library for that purpose, i kept my design independent from concrete data-representations like XML. My problem now is that I need a way to define a data model, which is basically a ruleset describing valid trees, against which a set of trees is being matched. I thought of using BNF or a similar dialect. Basically I need a way to iterate through the space of all valid TreeNodes defined by the ModelTree (Like a search through the search space for algorithms like A*) so that i can compare my set of concrete trees with the model. I know that I'll have to deal with infinite spaces there but first things first. I know, it's rather tricky (and my sentences are pretty bumpy) but I would appreciate any clues. Thanks in advance, Stefan

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• Control JSON Serialization format of a custom type in .NET

  - by mrjoltcola

  I have a PhoneNumber class that stores a normalized string, and I've defined implicit operators for string <- Phone to simplify treatment of the PhoneNumber as a string. I've also overridden the ToString() method to always return the cleaned version of the number (no hyphens or parentheses or spaces). In any MVC.NET code where I explicitly display the number, I can explicitly call phone.Format(). The problem here is serializing an entity that has a PhoneNumber to JSON; JavaScriptSerializer serializes it as [object Object]. I want to serialize it as a string in (555)555-5555 format. I've looked at writing a custom JavaScriptConverter, but JavaScriptConverter.Serialize() method returns a dictionary of name-value pairs. I don't want PhoneNumber to be treated as an object with fields, I want to simply serialize it as a string.

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• Antlr Lexer Quoted String Problem

  - by Loki

  I'm trying to build a lexer to tokenize lone words and quoted strings. I got the following: STRING: QUOTE (options {greedy=false;} : . )* QUOTE ; WS : SPACE+ { $channel = HIDDEN; } ; WORD : ~(QUOTE|SPACE)+ ; For the corner cases, it needs to parse: "string" word1" word2 As three tokens: "string" as STRING and word1" and word2 as WORD. Basically, if there is a last quote, it needs to be part of the WORD were it is. If the quote is surrounded by white spaces, it should be a WORD. I tried this rule for WORD, without success: WORD: ~(QUOTE|SPACE)+ | (~(QUOTE|SPACE)* QUOTE ~QUOTE*)=> ~(QUOTE|SPACE)* QUOTE ~(QUOTE|SPACE)* ;

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• NSPredicate and Regex

  - by Dave

  Can someone please help me with using Regex with NSPredicate? NSString *regex = @"(?:[A-Za-z0-9])"; NSPredicate *pred = [NSPRedicate predicateWithFormat:@"SELF MATCHES %@", regex]; if ([pred evaluateWithObject:mystring]) { //do something } testing the above wth mystring - qstring123 doesn't seem to work. I am expecting it to enter the if condition because it supposedly should match the regex. Besides, I need a regex for alpha numberic allowing commas and spaces. will this work? @"(?:[A-Za-z0-9])*(?:,[A-sa-z0-9)*(?:\s[A-sa-s0-9])" Please help.

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• Using RichTextBox SelectionTabs property in winforms

  - by Bala R

  In a winforms application, I'm using a RichTextBox and I'm trying to reduce the output from a '\t' to 4 spaces from whatever the default is. I have this in the form's OnLoad _richTextBox.Text = "1\t2\t3\t4\t5"; _richTextBox.SelectAll(); _richTextBox.SelectionTabs = new int[] {100,200,300,400 }; I have a breakpoint before and after this snippet. The SelectionTabs is set to {int[0]} (empty int array) before and after the assignment. Can anyone tell me why my assignment is not going through?

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• XML generation error.

  - by Janis Peisenieks

  I'm trying to generate an XML output with Zend_Framework, but this nasty thing keeps popping up: XML Parsing Error: XML or text declaration not at start of entity Location: http://cart/index/kurpirkt Line Number 2, Column 1:<?xml version="1.0" encoding="utf-8"?> ^ As far as I know there are no white-spaces in any of my include files, and even if there were, I think that the ob_clean() function should have taken care of it. Here is my code: public function kurpirktAction() { ob_clean(); // XML-related routine $xml = new DOMDocument('1.0', 'utf-8'); $xml->appendChild($xml->createElement('foo', 'bar')); $output = $xml->saveXML(); // Both layout and view renderer should be disabled Zend_Controller_Action_HelperBroker::getStaticHelper('viewRenderer')->setNoRender(true); Zend_Layout::getMvcInstance()->disableLayout(); // Setting up headers and body $this->_response->setHeader('Content-Type', 'text/xml; charset=utf-8') ->setBody($output); } Any help or suggestions?

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• Turning off auto indent when pasting text into vim

  - by Rimian

  Unfortunately, I am not an experienced vim user. But, I am making the effort to learn it. When I paste code into my document from the clipboard, I get extra spaces at the start of each new line: line line line I know you can turn off auto indent but mine doesn't seem to work because I have some other settings conflicting or something (which look pretty obvious in my .vimrc but don't seem to matter when I take them out). Can someone please show me the way to turn this off when I paste code but still have vim auto indent when I am writing code? Please see my .vimrc file: set expandtab set tabstop=2 set shiftwidth=2 set autoindent set smartindent set bg=dark set nowrap Many thanks

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• How do I automate navigation to a website that requires authentication?

  - by Wiz

  Here's what I'm trying to achieve. I would like to write a script that will navigate to a website that requires me to be authenticated as myself, say Facebook, Live Spaces, Twitter or any other, and then have that script search for certain information on one of the pages of the website. I've done something similar in the past with the Windows.Forms WebBrowser control, which is a full blown implementation of IE that can be controlled through code and will store whatever cookies you get once you're authenticated, but it was very unfriendly to modify and I was hoping to use a scripting language instead, maybe Powershell or something of that sort. Are there maybe some good tutorials about this out there on the web? Thanks!

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• Slug ID's with the same name?

  - by James Jeffery

  I want to create slug URL's from a users title in my system. If a user types "The best way's to get slim; period!", then I want the slug to be "the-best-ways-to-get-slim-period". Also, if someone has already created a page with that title I want the slug to be "the-best-ways-to-get-slim-period-1". My question is how can I check the database before a record is created? Ok, obviously I am going to have to perform a check in the database, and then a write. That's 2 queries. Is this the normal way to do it? Also, are there any conventional regular expressions for filtering non alpha/number characters and replacing spaces with hyphens? Any help is much appreciated. Thanks.

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• Java JEditorPane Format

  - by ikurtz

  im trying to implement a Chat feature in my application. i have used 2 JEditorPane. one for holding chat history and the other for sending chat to the previous JEditorPane. the JEditorPane is text/html type. the problem i am having is when i put more than one space between characters it is automatically removed by the parser because it is HTML! how can i make it so, that the spaces are not stripped? example: hello world becomes: hello world. also i am having to parse the html tags so the new messages can be added to the history window. is there a better option than using JEditorPane? if i used JTextPane would it be easier to implement? i would like the chat boxes/panes to be able to handle bold, URL embedding for now. thank you and look forward to your guidance.

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• Parsing an RFC822-Datetime in .NETMF 4.0

  - by chris12892

  I have an application written in .NETMF that requires that I be able to parse an RFC822-Datetime. Normally, this would be easy, but NETMF does not have a DateTime.parse() method, nor does it have some sort of a pattern matching implementation, so I'm pretty much stuck. Any ideas? EDIT: "Intelligent" solutions are probably needed. Part of the reason this is difficult is that the datetime in question has a tendency to have extra spaces in it (but only sometimes). A simple substring solution might work one day, but fail the next when the datetime has an extra space somewhere between the parts. I do not have control over the datetime, it is from the NOAA.

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• What's wrong with my Objective-C class?

  - by zgillis

  I am having trouble with my Objective-C code. I am trying to print out all of the details of my object created from my "Person" class, but the first and last names are not coming through in the NSLog method. They are replaced by spaces. Person.h: http://pastebin.com/mzWurkUL Person.m: http://pastebin.com/JNSi39aw This is my main source file: #import <Foundation/Foundation.h> #import "Person.h" int main (int argc, const char * argv[]) { Person *bobby = [[Person alloc] init]; [bobby setFirstName:@"Bobby"]; [bobby setLastName:@"Flay"]; [bobby setAge:34]; [bobby setWeight:169]; NSLog(@"%s %s is %d years old and weighs %d pounds.", [bobby first_name], [bobby last_name], [bobby age], [bobby weight]); return 0; }

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• searching for address matches using sql server 2008 full text search

  - by Sridhar

  Hi, I am not sure how to search for address matches using sql server 2008 full text search. This is what I tried but it doesn't return any records. TableA ------ Address1 Address2 City State Zip All the above columns in the table are full text indexed. Let's say if the user enters "123 Apple street FL 33647" and I have a record in the table as Address1 = "123" , Address2 = "Apple street", City = "Tampa", State = "FL" and Zip = "33647" I would like the query to return this. can you please let me know how I would do this. query tried -------------- SELECT * FROM TableA WHERE CONTAINS((Address1, Address2, City, State, zip), N'FORMSOF(THESAURUS, 123AppleStreetFL33647)'); If I put spaces in the search word, it is giving syntax error. Thanks, sridhar.

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• Python: Split by 1 or more occurrences of a delimiter

  - by Adam Matan

  Hi, I have a formatted string from a log file, which looks like: >>> a="test result" That is, the test and the result are split by some spaces - it was probably created using formatted string which gave test some constant spacing. Simple splitting won't do the trick: >>> a.split(" ") ['test', '', '', '', ... '', '', '', '', '', '', '', '', '', '', '', 'result'] split(DELIMITER, COUNT) cleared some unnecessary values: >>> a.split(" ",1) ['test', ' result'] This helped - but of course, I really need: ['test', 'result'] I can use split() followed by map + strip(), but I wondered if there is a more Pythonic way to do it. Thanks, Adam

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• cmake missing separator error

  - by user198729

  D:\Works\c\cmake\build>cmake .. -- The C compiler identification is MSVC -- The CXX compiler identification is MSVC -- Check for CL compiler version -- Check for CL compiler version - 1500 -- Check if this is a free VC compiler -- Check if this is a free VC compiler - no -- Check for working C compiler: D:/Tools/Microsoft Visual Studio 9.0/VC/bin/cl.exe -- Check for working C compiler: D:/Tools/Microsoft Visual Studio 9.0/VC/bin/cl.exe -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler: D:/Tools/Microsoft Visual Studio 9.0/VC/bin/cl.exe -- Check for working CXX compiler: D:/Tools/Microsoft Visual Studio 9.0/VC/bin/cl.exe -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Configuring done -- Generating done -- Build files have been written to: D:/Works/c/cmake/build D:\Works\c\cmake\build>make Makefile:28: *** missing separator. Stop. I saw many similar problems,but not with cmake,and their solution is to use tabs instead of spaces,but the makefile is generated by cmake,has anyone else met this problem?

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• Creating DescriptionAttribute on Enumeration Field using System.Reflection.Emit

  - by Manish Sinha

  I have a list of strings which are candidates for Enumerations values. They are Don't send diffs 500 lines 1000 lines 5000 lines Send entire diff The problem is that spaces, special characters are not a part of identifiers and even cannot start with a number, so I would be sanitizing these values to only chars, numbers and _ To keep the original values I thought of putting these strings in the DescriptionAttribute, such that the final Enum should look like public enum DiffBehvaiour { [Description("Don't send diffs")] Dont_send_diffs, [Description("500 lines")] Diff_500_lines, [Description("1000 lines")] Diff_1000_lines, [Description("5000 lines")] Diff_5000_lines, [Description("Send entire diff")] Send_entire_diff } Then later using code I will retrieve the real string associated with the enumeration value, so that the correct string can be sent back the web service to get the correct resource. I want to know how to create the DescriptionAttribute using System.Reflection.Emit Basically the question is where and how to store the original string so that when the Enumeration value is chosen, the corresponding value can be retrieved. I am also interested in knowing how to access DescriptionAttribute when needed.

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• Decoding a compressed short string; uncertain on compression used - Updated

  - by James

  Hi, I have a program that is compressing a string in an unknown way. I know a few inputs and the output produced, but I am not sure what is being used to compress the string. Here are my examples. (just 38 x a, no spaces or anything else) In: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" Out: "026900211AA63000026900"   (just 32 x a) In: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" Out: "0209001c1aa7a000020900" (31 x a, then 1 b) In: "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab" Out: "0209000177c553c000020900" (31 x b, then 1 a) In: "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbba" Out: "0209001e7754f38000020900" In: "Hey wot u doing 2day u wanna do something" Out: "02990011C7C62E78CE6B8E3ACD83E81B37C5C5A6B9D1E1B06963DB5E71155C1000029900" (same as previous string, but with a space at the end) In: "Hey wot u doing 2day u wanna do something " Out: "02A90012C7718B9E339AE2EB360FA02CDF17177A674786DF4B1EDAF388AAE08000000002A90000" The only definite thing I can see so far is digit 2 and 3 are the amount of characters (hex value), ie first one is 26 = 38 Also the first 6 digits are repeated at the end Any help / advice would be great, thanks!

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• Regular Expression, JEditorPane, Self-closing tags

  - by Stephen Swensen

  I'm am using JEditorPane to render basic HTML. But it renders self-closing tags incorrectly, specifically br tags, e.g. <br /> is bad but <br> is good. I would like to use String.replaceAll(regex, "<br>") to fix the HTML, where regex is a regular expression matching any self-closing br tag with case-insensitivity and zero to infinity number of spaces between the "r" and the "/" (e.g., <br/>, <BR/>, <br />, <Br     />, etc.). Thanks to any regular expression experts who can solve this!

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• innerHTML removes attribute quotes in Internet Explorer

  - by Augustus

  When you get the innerHTML of a DOM node in IE, if there are no spaces in an attribute value, IE will remove the quotes around it, as demonstrated below: <html> <head> <title></title> </head> <body> <div id="div1"><div id="div2"></div></div> <script type="text/javascript"> alert(document.getElementById("div1").innerHTML); </script> </body> </html> In IE, the alert will read: <DIV id=div2></DIV> This is a problem, because I am passing this on to a processor that requires valid XHTML, and all attribute values must be quoted. Does anyone know of an easy way to work around this behavior in IE?

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• Lucene.Net PrefixQuery

  - by Sole

  Hi, i´m development a suggest box for my site search service. I has to search fields like these: Visual Basic Enterprise Edition Visual C++ Visual J++ My code is: Directory dir = Lucene.Net.Store.FSDirectory.GetDirectory("Index", false); IndexSearcher searcher = new Lucene.Net.Search.IndexSearcher( dir,true); Term term = new Term("nombreAnalizado", _que); PrefixQuery query = new PrefixQuery(term); TopDocs topDocs = searcher.Search(query, 10000); This code works well in this case: "Enterprise" will match "Visual Basic Enterprise Edition" But "Enterprise E" doesn´t match anything. I removed white spaces at indexing time and when the user is searching. Thanks.

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