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  • Fuzzy string matching algorithm in Python

    - by Mridang Agarwalla
    Hi guys, I'm trying to find some sort of a good, fuzzy string matching algorithm. Direct matching doesn't work for me — this isn't too good because unless my strings are a 100% similar, the match fails. The Levenshtein method doesn't work too well for strings as it works on a character level. I was looking for something along the lines of word level matching e.g. String A: The quick brown fox. String B: The quick brown fox jumped over the lazy dog. These should match as all words in string A are in string B. Now, this is an oversimplified example but would anyone know a good, fuzzy string matching algorithm that works on a word level. Thanks in advance.

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  • What's wrong with my regex

    - by Tom Brown
    Yes I know its usually a bad idea to parse HTML using RegEx, but that aside can someone explain the fault here: string outputString = Regex.Replace(inputString, @"<?(?i:script|embed|object|frameset|frame|iframe|metalink|style|html|img|layer|ilayer|meta|applet)(.|\n)*?>", ""); if (outputString != inputString) { Console.WriteLine("unwanted tags detected"); } It certainly detects the intended tags like: <script> and <html>, but it also rejects strings I want to allow such as <B>Description</B> and <A href="http://www.mylink.com/index.html">A Link containing 'HTML'</A>

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  • How to transform phrases and words into MD5 hash?

    - by brilliant
    Can anyone, please, explain to me how to transform a phrase like "I want to buy some milk" into MD5? I read Wikipedia article on MD5, but the explanation given there is beyond my comprehension: "MD5 processes a variable-length message into a fixed-length output of 128 bits. The input message is broken up into chunks of 512-bit blocks (sixteen 32-bit little endian integers)" "sixteen 32-bit little endian integers" is already hard for me. I checked the article on little endians and didn't understand a bit. However, the examples of some phrases and their MD5 hashes are very nice: MD5("The quick brown fox jumps over the lazy dog") = 9e107d9d372bb6826bd81d3542a419d6 MD5("The quick brown fox jumps over the lazy dog.") = e4d909c290d0fb1ca068ffaddf22cbd0 Can anyone, please, explain to me how this MD5 algorithm works on some very simple example? And also, perhaps you know some software or a code that would transform phrases into their MD5. If yes, please, let me know.

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  • WinForms: finding the size of a minimized form without going to FormWindowState.Normal

    - by Doc Brown
    Is there an easy way to determine the size of a Form it does have in WindowState=Normal, without actually changing the Form state? Here is what I do now (C# code): public class MyForm: Form { public void MyMethod() { // ... FormWindowState oldState = this.WindowState; this.WindowState = FormWindowState.Normal; Point windowLocation = this.Location; Size windowSize = this.Size; this.WindowState = oldState; // ... } } This is what I would like the code to look like: public class MyForm: Form { public void MyMethod() { // no state change here Point windowLocation = this.NormalStateLocation; Size windowSize = this.NormalStateSize; } } In fact there are no NormalStateLocation or NormalStateSize properties in Windows Forms.

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  • Algorithm for disordered sequences of strings

    - by Kinopiko
    The Levenshtein distance gives us a way to calculate the distance between two similar strings in terms of disordered individual characters: quick brown fox quikc brown fax The Levenshtein distance = 3. What is a similar algorithm for the distance between two strings with similar subsequences? For example, in quickbrownfox brownquickfox the Levenshtein distance is 10, but this takes no account of the fact that the strings have two similar subsequences, which makes them more "similar" than completely disordered words like quickbrownfox qburiocwknfox and yet the completely disordered version has a Levenshtein distance of eight. What distance measures exist which take the length of subsequences into account, without assuming that the subsequences can be easily broken into distinct words?

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  • PHP - Find parent key of array

    - by Jordan Rynard
    I'm trying to find a way to return the value of an array's parent key. For example, from the array below I'd like to find out the parent's key where $array['id'] == "0002". The parent key is obvious because it's defined here (it would be 'products'), but normally it'd be dynamic, hence the problem. The 'id' and value of 'id' is known though. [0] => Array ( [data] => [id] => 0000 [name] => Swirl [categories] => Array ( [0] => Array ( [id] => 0001 [name] => Whirl [products] => Array ( [0] => Array ( [id] => 0002 [filename] => 1.jpg ) [1] => Array ( [id] => 0003 [filename] => 2.jpg ) ) ) ) )

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  • Scrolling with CSS

    - by Jordan Trulen
    I have 4 tables that need to scroll, they are set up as follows: Table1(static) Table2(Horizontal Scrolling) Table3(Vertical Scrolling) Table4(Horizontal and Vertical Scrolling) Table1 Table2 Table3 Table4 The tricky part of this is that Table 3 and 4 need to keep in sync as this is a listing of data broken out into two tables. Table 2 and 4 are in the same situation. Any ideas? No Javascript please as we have a script that works, but it is far too slow to work. Thanks.

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  • What are the primitive Forth operators?

    - by Barry Brown
    I'm interested in implementing a Forth system, just so I can get some experience building a simple VM and runtime. When starting in Forth, one typically learns about the stack and its operators (DROP, DUP, SWAP, etc.) first, so it's natural to think of these as being among the primitive operators. But they're not. Each of them can be broken down into operators that directly manipulate memory and the stack pointers. Later one learns about store (!) and fetch (@) which can be used to implement DUP, SWAP, and so forth (ha!). So what are the primitive operators? Which ones must be implemented directly in the runtime environment from which all others can be built? I'm not interested in high-performance; I want something that I (and others) can learn from. Operator optimization can come later. (Yes, I'm aware that I can start with a Turing machine and go from there. That's a bit extreme.) Edit: What I'm aiming for is akin to bootstrapping an operating system or a new compiler. What do I need do implement, at minimum, so that I can construct the rest of the system out of those primitive building blocks? I won't implement this on bare hardware; as an educational exercise, I'd write my own minimal VM.

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  • What file format contents starts with "URES"?

    - by Jordan
    I have a number of files that contain data in a format I am not familiar with. All of the data files begin with the same byte sequence, presumably a file header, and the sequence is "URES". I'm assuming that these files are some kind of resource file, perhaps a collection of data or other files all embedded into one file; that's just a guess however. Does anyone know what format this is/might be? If so, how would I interrogate the file? Are there applications that let me open these kind of files? Do you know of any libraries or APIs that I can use to gain programmatic access the data?

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  • ExpressionEngine: {exp:query} producing error

    - by Josh Brown
    Hi. I have this code in place to pull some relation data from the database based on a ID of another weblog entry. The relationship custom field would not work for my situation. I have tested the SQL with MySQL and get no errors. But I get an error when I pull up the page. {exp:query sql="SELECT entry_id,field_id_16,field_id_19 FROM exp_weblog_data WHERE field_id_15='2' AND weblog_id='6'"} Also, I want to populate the “field_id_15” from the url. I have tried using the “segment_*” tag, but nothing. Maybe it is something else. Any help is greatly appreciated. Thanks, Josh

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  • Algorithm for measuring distance between disordered sequences

    - by Kinopiko
    The Levenshtein distance gives us a way to calculate the distance between two similar strings in terms of disordered individual characters: quick brown fox quikc brown fax The Levenshtein distance = 3. What is a similar algorithm for the distance between two strings with similar subsequences? For example, in quickbrownfox brownquickfox the Levenshtein distance is 10, but this takes no account of the fact that the strings have two similar subsequences, which makes them more "similar" than completely disordered words like quickbrownfox qburiocwknfox and yet this completely disordered version has a Levenshtein distance of eight. What distance measures exist which take the length of subsequences into account, without assuming that the subsequences can be easily broken into distinct words?

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  • Codeigniter: Make field increase by 1 up to a number?

    - by Kevin Brown
    In my validation class I have this: $fields['a_1'] = 'First Question'; $fields['a_2'] = 'Second Question'; $fields['a_3'] = 'Third Question'; $fields['a_4'] = 'Fourth Question'; This is getting old--I have about 40 of these to write, and each set has matching validation rules: $rules['a_1'] = 'hour'; $rules['a_2'] = 'hour'; ... Is there a way to say: $fields['a_' . 1 - 17] = "One, Two" Etc... Just curious... if not, I'll brute force it.

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  • Looping music with intro in XNA using SoundEffect

    - by Jordan Roher
    I have two sound files: Sound A is an 18 second intro designed to be played once Sound B is a 1 minute looping track I'd like to play Sound A once, then once Sound A is done, immediately play Sound B and keep looping Sound B until I tell it to stop. This is supposed to be looping town music in an RPG. I've tried doing this in code using just SoundEffect, but there's a tiny yet noticeable gap between the end of Sound A and the beginning of Sound B. Even if I put monitoring code watching Sound A's SoundEffectInstance.State in the Update() function, I haven't been able to start Sound B exactly when Sound A finishes so that it's seamless. I'd prefer to use SoundEffect because I can load WMA files rather than being stuck with WAVs in XACT.

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  • PS using Get-WinEvent with FilterXPath and datetime variables?

    - by Jordan W.
    I'm grabbing a handful of events from an event log in chronological order don't want to pipe to Where want to use get-winevent After I get the Event1, I need to get the 1st instance of another event that occurs some unknown amount of time after Event1. then grab Event3 that occurs sometime after Event2 etc. Basically starting with: $filterXML = @' <QueryList> <Query Id="0" Path="System"> <Select Path="System">*[System[Provider[@Name='Microsoft-Windows-Kernel-General'] and (Level=4 or Level=0) and (EventID=12)]]</Select> </Query> </QueryList> '@ $event1=(Get-WinEvent -ComputerName $PCname -MaxEvents 1 -FilterXml $filterXML).timecreated Give me the datetime of Event1. Then I want to do something like: Get-WinEvent -LogName "System" -MaxEvents 1 -FilterXPath "*[EventData[Data = 'Windows Management Instrumentation' and TimeCreated -gt $event1]]" Obviously the timecreated part bolded there doesn't work but I hope you get what I'm trying to do. any help?

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  • Opening XNA Xbox 360 assemblies in Reflector

    - by David Brown
    I'd like to get a look at the differences between the Xbox 360 and Windows XNA assemblies. I know the 360 runs the .NET Compact Framework and I was under the impression that Reflector could read CF assemblies, but when I open them, all of the methods are blank and no internal classes are shown. Is this done on purpose, or is it a limitation of Reflector? Is there another way to see how the Xbox 360 XNA assemblies work?

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  • nHibernate persist IList<DayOfWeek>

    - by Charlie Brown
    Is it possible to persist an IList<DayOfWeek> using nHibernate? public class Vendor { public virtual IList<DayOfWeek> OrderDays { get; private set; } } If not, what are some common solutions; creating a class for OrderDays?, using an IList<string>?

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  • Python re.sub MULTILINE caret match

    - by cdleary
    The Python docs say: re.MULTILINE: When specified, the pattern character '^' matches at the beginning of the string and at the beginning of each line (immediately following each newline)... By default, '^' matches only at the beginning of the string... So what's going on when I get the following unexpected result? >>> import re >>> s = """// The quick brown fox. ... // Jumped over the lazy dog.""" >>> re.sub('^//', '', s, re.MULTILINE) ' The quick brown fox.\n// Jumped over the lazy dog.'

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  • Embedding tcl in ruby

    - by Jordan
    Is there any way to do this? It seems the only possible way to do this is by using ruby/tk and creating a tcl interpreter through that api. However, I'd like to use this on a system with no GUI (x windows). Am I out of options? Thanks

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  • Algorithm for measuring distance between disordered sequences of strings

    - by Kinopiko
    The Levenshtein distance gives us a way to calculate the distance between two similar strings in terms of disordered individual characters: quick brown fox quikc brown fax The Levenshtein distance = 3. What is a similar algorithm for the distance between two strings with similar subsequences? For example, in quickbrownfox brownquickfox the Levenshtein distance is 10, but this takes no account of the fact that the strings have two similar subsequences, which makes them more "similar" than completely disordered words like quickbrownfox qburiocwknfox and yet this completely disordered version has a Levenshtein distance of eight. What distance measures exist which take the length of subsequences into account, without assuming that the subsequences can be easily broken into distinct words?

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  • Can you update/add records in SQL using a datagridview and LINQ to SQL

    - by Jordan S
    Is it possible to bind a DataGridView to a LINQ to SQL class so that when I make changes to the records in the datagridview it automatically updates the SQL database? I have tried binding the data like this but if I make changes to the data in the datagrid view they do not actually affect the data in the database... BOMClassesDataContext DB = new BOMClassesDataContext(); var mfrs = from m in DB.Manufacturers select m; BindingSource bs = new BindingSource(); bs.DataSource = mfrs; dataGridView1.DataSource = bs;

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  • Vala vapi files documentation

    - by Jordan
    Hi there, I'd like to hack on an existing GLib based C project using vala. Basically what I'm doing is, at the beginning of my build process, using valac to generate .c and .h files from my .vala files and then just compiling the generated files the way I would any .c or .h file. This is probably not the best way, but seems to be working alright for the most part. My problem is that I'm having a hard time accessing my existing C code from my Vala code. Is there an easy way to do this? I've tried writing my own .vapi files (I didn't have any luck with the tool that came with vala), but I can't find any decent documentation on how to write these. Does any exist? Do I need one of these files to call existing C code? Thanks.

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  • Update panel and usercontrols

    - by Charlie Brown
    I have two web user controls nested inside of an update panel. The events inside the user controls do not appear to trigger the panel. For testing, I have set the method the fires to sleep for 3 seconds, and added an update progress panel to the page. The update progress panel never comes up and the page reflashes as usual. The user controls work correctly and do what they need to do, but I would like to make them ajaxy and pretty. Is there a special method for adding usercontrols to an update so the postback works correctly? <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdateProgress ID="UpdateProgress1" runat="server" DisplayAfter="100"> <ProgressTemplate> UPDATING...</ProgressTemplate> </asp:UpdateProgress> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <div id="order"> <keg:BeerList runat="server" ID="uxBeerList" /> <kegcart:ShoppingCart runat="server" ID="uxCustomerCart" /> <br class="clearfloat" /> </div> </ContentTemplate> </asp:UpdatePanel> Protected Sub uxBeerList_AddItem(ByVal item As KegData.IOrderableItem) Handles uxBeerList.AddItem uxCustomerCart.AddItemToOrder(item) System.Threading.Thread.Sleep(5000) End Sub

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  • Enabling PostgreSQL support in PHP on Mac OS X

    - by Jordan Scales
    I'm having a terribly difficult time getting the command "pg_connect()" to work properly on my Mac. I'm currently writing a PHP script (to be executed from console) to read a PostgreSQL database and email a report. I've gone into my php.ini file and added extension=pgsql.so But, I'm met with the following error. PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/php_pgsql.so' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/php_pgsql.so, 9): image not found in Unknown on line 0 PHP Fatal error: Call to undefined function pg_connect() in... (blah file here) When running phpinfo(), I see nothing about PostgreSQL, so what is my issue here?

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  • Why does Font.registerFont throw an error the second time a swf is loaded?

    - by Al Brown
    I've found an issue (in flash cs5) when using TLFTextfields and fonts shared at runtime, and I wondered if anyone has a solution. Here's the scenario. Fonts.swf: library for fonts (runtime shared DF4) Popup.swf: popup with a TLFTextfield (with text in it) using a font from Fonts.swf Main.swf : the main swf with a button that loads and unloads Popup.swf (using Loader or SafeLoader give the same results) Nice and simple, Run main.swf, click button and the popup appears with the text. Click the button again to remove the popup. All well and good now click the button again and I get the following error. ArgumentError: Error #1508: The value specified for argument font is invalid. at flash.text::Font$/registerFont() at Popup_fla::MainTimeline()[Popup_fla.MainTimeline::MainTimeline:12] I'm presuming it's happening because the font is already registered (checked when clicking before the load). Does anyone know how to get past this? If you are wondering here's my Main.as package { import fl.controls.Button; import flash.display.Loader; import flash.display.Sprite; import flash.events.Event; import flash.events.IOErrorEvent; import flash.events.MouseEvent; import flash.events.UncaughtErrorEvent; import flash.net.URLRequest; import flash.text.Font; public class Main extends Sprite { public var testPopupBtn:Button; protected var loader:Loader; public function Main() { trace("Main.Main()"); testPopupBtn.label = "open"; testPopupBtn.addEventListener(MouseEvent.CLICK, testClickHandler); } protected function testClickHandler(event:MouseEvent):void { trace("Main.testClickHandler(event)"); if(loader) { testPopupBtn.label = "open"; this.removeChild(loader); //loader.unloadAndStop(); loader = null; }else{ testPopupBtn.label = "close"; trace("Registered Fonts -->"); var fonts:Array = Font.enumerateFonts(false); for each (var font:Font in fonts) { trace("\t",font.fontName, font.fontStyle, font.fontType); } trace("<--"); loader = new Loader(); loader.uncaughtErrorEvents.addEventListener(UncaughtErrorEvent.UNCAUGHT_ERROR, uncaughtErrorHandler); this.addChild(loader); try{ loader.load(new URLRequest("Popup.swf")); }catch(e:*){ trace(e); } } } private function uncaughtErrorHandler(event:UncaughtErrorEvent):void { trace("Main.uncaughtErrorHandler(event)", event); } } }

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