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• R strsplit and vectorization

  - by James

  When creating functions that use strsplit, vector inputs do not behave as desired, and sapply needs to be used. This is due to the list output that strsplit produces. Is there a way to vectorize the process - that is, the function produces the correct element in the list for each of the elements of the input? For example, to count the lengths of words in a character vector: words <- c("a","quick","brown","fox") > length(strsplit(words,"")) [1] 4 # The number of words (length of the list) > length(strsplit(words,"")[[1]]) [1] 1 # The length of the first word only > sapply(words,function (x) length(strsplit(x,"")[[1]])) a quick brown fox 1 5 5 3 # Success, but potentially very slow Ideally, something like length(strsplit(words,"")[[.]]) where . is interpreted as the being the relevant part of the input vector.

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• bash rename using regex array substitution

  - by mulllhausen

  hi, i have a very similar question as for this post. i would like to know how to rename occurances within a filename with designated substitutions. for example if the original file is called: 'the quick brown quick brown fox.avi' i would like to rename it to 'the slow red slow red fox.avi'. i tried this: new="(quick=>'slow',brown=>'red')" regex="quick|brown" rename -v "s/($regex)/$new{$1}/g" * but no love :( i also tried with regex="qr/quick|brown/" but this just gives errors. any idea what im doing wrong?

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• Anti-aliased text on HTML5's canvas element

  - by Matt Mazur

  I'm a bit confused with the way the canvas element anti-aliases text and am hoping you all can help. In the following screenshot the top "Quick Brown Fox" is an H1 element and the bottom one is a canvas element with text rendered on it. On the bottom you can see both "F"s placed side by side and zoomed in. Notice how the H1 element blends better with the background: http://jmockups.s3.amazonaws.com/canvas_rendering_both.png Here's the code I'm using to render the canvas text: var canvas = document.getElementById('canvas'); if (canvas.getContext){ var ctx = canvas.getContext('2d'); ctx.fillStyle = 'black'; ctx.font = '26px Arial'; ctx.fillText('Quick Brown Fox', 0, 26); } Is it possible to render the text on the canvas in a way so that it looks identical to the H1 element? And why are they different?

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• Python: How would i write this 'if' statement for a word of arbitrary length?

  - by ElCarlos

  This is what I currently have: wordlist = [fox, aced, definite, ace] for word in wordlist: a = len(word) if (ord(word[a-(a-1)] - ord(word[(a-a)])) == ord(word[a-(a-2)])-ord(word[a-(a-1)]: print "success", word else: print "fail", word What I'm trying to do is calculate the ASCII values between each of the letters in the word. And check to see if the ord of the letters are increasing by the same value. so for fox, it would check if the difference between the ord of 2nd and 1st letters are equal to the ord difference of the 3rd and 2nd letters. However, with my current 'if' statement, only the first 3 letters of a word are compared. How can I rewrite this statement to cover every letter in a word of length greater than 3? Sorry if I can't present this clearly, thanks for your time.

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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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• 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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• 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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• Text Box size is different in IE 6 and FireFox 3.6

  - by user299873

  I am facing issues with text box size when veiwing in Fire Fox 3.6. < input class="dat" type="text" name="rejection_reason" size="51" maxlength="70" onchange="on_change();" style is as: .dat { font-family : verdana,arial,helvetica; font-size : 8pt; font-weight : bold; text-align : left; vertical-align : middle; background-color : White; } Text box size in Fire Fox is bit smaller than IE6. Not sure why IE6 and FireFox displaying text box of diff size.

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• Split large text string into variable length strings without breaking words and keeping linebreaks a

  - by Frank

  I am trying to break a large string of text into several smaller strings of text and define each smaller text strings max length to be different. for example: "The quick brown fox jumped over the red fence. The blue dog dug under the fence." I would like to have code that can split this into smaller lines and have the first line have a max of 5 characters, the second line have a max of 11, and rest have a max of 20, resulting in this: Line 1: The Line 2: quick brown Line 3: fox jumped over the Line 4: red fence. Line 5: The blue dog Line 6: dug under the fence. All this in C# or MSSQL, is it possible?

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• Selective coloring on dynamic TextBlock content in WPF

  - by user326579

  For selective coloring of static content the following suggestion works fine : http://stackoverflow.com/questions/2435880/is-it-possible-to-seletively-color-a-wrapping-textblock-in-silverlight-wpf However my content will be generated at runtime. For ex. if the Content generated is : "A Quick Brown Fox" Then I need they string "Brown" to be in color Brown and "Fox" to be in color Red The Keyword-Color list is fixed and available to me at runtime. I have looked at the Advanced TextFormatting page on MSDN, but it is too complicated for me, also the sample in there does not compile :( I am looking at creating a custom control which can do this for me. Let me know if anyone has any idea regarding how to go about this. Thanks in advance.

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• Is there a "Language-Aware" diff?

  - by JS

  (Appologies for the poor title. I'm open to suggestions for a better one. "Language-gnostic", perhaps?) Does there exist a diff utility (preferably *nix-based) that will diff files based on how a (selectable) language compiler would view the code? For example, to a Python compiler, these two 'graphs are identical: # The quick brown fox jumped vs: # The quick brown # fox jumped Telling most diffs (at least the one's I'm familiar with) to ignore spaces and linebreaks still causes them to flag a difference due to the extra '#'. "Language-sensitivity" would sure help to cut down on the "noise". Ideally, it would work in xemacs....(<-- probably pushing my luck? :-)

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• Show surrounding words when searching for a specific word in a text file (Ruby)

  - by Ezra

  Hi, I'm very new to ruby. I'm trying to search for any instance of a word in a text file (not the problem). Then when the word is discovered, it would show the surrounding text (maybe 3-4 words before and after the target word, instead of the whole line), output to a list of instances and continue searching. Example "The quick brown fox jumped over the lazy dog." Search word = "jumped" Output = "...brown fox jumped over the..." Any help is appreciated. Thanks! Ezra def word_exists_in_file f = File.open("test.txt") f.each do line print line if line.match /someword/ return true end end false end

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• Google Wave Robots API v2

  Google Wave Robots API v2 Pamela Fox describes how Wave Robots works, and new features in Robots API v2. From: GoogleDevelopers Views: 2 0 ratings Time: 17:28 More in Science & Technology

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• Google Wave Conversation Model

  Google Wave Conversation Model Pamela Fox explains the Google Wave Conversation - waves, wavelets, conversations, and blips. The Prezi shown is here: prezi.com The Google Wave conversation model spec is here: www.waveprotocol.org From: GoogleDevelopers Views: 2 0 ratings Time: 08:09 More in Science & Technology

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• MSDN Radio: SharePoint 2010 for Developers

  When Microsoft SharePoint Server 2010 is released, it will offer new tools that make customizing and extending your applications much easier. Join us as we talk with Steve Fox, a Senior Evangelism Manager with the Developer and Platform Evangelism team. We'll explore the tools, what's possible, and take your questions....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• 7,500 Online Shoppers Unknowingly Sold Their Souls

  <b>Fox News:</b> "A computer game retailer revealed that it legally owns the souls of thousands of online shoppers, thanks to a clause in the terms and conditions agreed to by online shoppers."

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• Are all <canvas> tag dimensions in pixels?

  - by Simon Omega

  Are all tag dimensions in pixels? I am asking because I understood them to be. But my math is broken or I am just not grasping something here. I have been doing python mostly and just jumped back into Java Scripting. If I am just doing something stupid let me know. For a game I am writing, I wanted to have a blocky gradient. I have the following: HTML <canvas id="heir"></canvas> CSS @media screen { body { font-size: 12pt } /* Game Rendering Space */ canvas { width: 640px; height: 480px; border-style: solid; border-width: 1px; } } JavaScript (Shortened) function testDraw ( thecontext ) { var myblue = 255; thecontext.save(); // Save All Settings (Before this Function was called) for (var i = 0; i < 480; i = i + 10 ) { if (myblue.toString(16).length == 1) { thecontext.fillStyle = "#00000" + myblue.toString(16); } else { thecontext.fillStyle = "#0000" + myblue.toString(16); } thecontext.fillRect(0, i, 640, 10); myblue = myblue - 2; }; thecontext.restore(); // Restore Settings to Save Point (Removing Styles, etc...) } function main () { var targetcontext = document.getElementById(“main”).getContext("2d"); testDraw(targetcontext); } To me this should produce a series of 640w by 10h pixel bars. In Google Chrome and Fire Fox I get 15 bars. To me that means ( 480 / 15 ) is 32 pixel high bars. So I change the code to: function testDraw ( thecontext ) { var myblue = 255; thecontext.save(); // Save All Settings (Before this Function was called) for (var i = 0; i < 16; i++ ) { if (myblue.toString(16).length == 1) { thecontext.fillStyle = "#00000" + myblue.toString(16); } else { thecontext.fillStyle = "#0000" + myblue.toString(16); } thecontext.fillRect(0, (i * 10), 640, 10); myblue = myblue - 10; }; thecontext.restore(); // Restore Settings to Save Point (Removing Styles, etc...) } And get a true 32 pixel height result for comparison. Other than the fact that the first code snippet has shades of blue rendering in non-visible portions of the they are measuring 32 pixels. Now back to the Original Java Code... If I inspect the tag in Chrome it reports 640 x 480. If I inspect it in Fire Fox it reports 640 x 480. BUT! Fire Fox exports the original code to png at 300 x 150 (which is 15 rows of 10). Is it some how being resized to 640 x 480 by the CSS instead of being set to a true 640 x 480? Why, how, what? O_o I confused...

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• Strings in .NET are Enumerable

  - by Scott Dorman

  It seems like there is always some confusion concerning strings in .NET. This is both from developers who are new to the Framework and those that have been working with it for quite some time. Strings in the .NET Framework are represented by the System.String class, which encapsulates the data manipulation, sorting, and searching methods you most commonly perform on string data. In the .NET Framework, you can use System.String (which is the actual type name or the language alias (for C#, string). They are equivalent so use whichever naming convention you prefer but be consistent. Common usage (and my preference) is to use the language alias (string) when referring to the data type and String (the actual type name) when accessing the static members of the class. Many mainstream programming languages (like C and C++) treat strings as a null terminated array of characters. The .NET Framework, however, treats strings as an immutable sequence of Unicode characters which cannot be modified after it has been created. Because strings are immutable, all operations which modify the string contents are actually creating new string instances and returning those. They never modify the original string data. There is one important word in the preceding paragraph which many people tend to miss: sequence. In .NET, strings are treated as a sequence…in fact, they are treated as an enumerable sequence. This can be verified if you look at the class declaration for System.String, as seen below: // Summary:// Represents text as a series of Unicode characters.public sealed class String : IEnumerable, IComparable, IComparable<string>, IEquatable<string> The first interface that String implements is IEnumerable, which has the following definition: // Summary:// Exposes the enumerator, which supports a simple iteration over a non-generic// collection.public interface IEnumerable{ // Summary: // Returns an enumerator that iterates through a collection. // // Returns: // An System.Collections.IEnumerator object that can be used to iterate through // the collection. IEnumerator GetEnumerator();} As a side note, System.Array also implements IEnumerable. Why is that important to know? Simply put, it means that any operation you can perform on an array can also be performed on a string. This allows you to write code such as the following: string s = "The quick brown fox";foreach (var c in s){ System.Diagnostics.Debug.WriteLine(c);}for (int i = 0; i < s.Length; i++){ System.Diagnostics.Debug.WriteLine(s[i]);} If you executed those lines of code in a running application, you would see the following output in the Visual Studio Output window: In the case of a string, these enumerable or array operations return a char (System.Char) rather than a string. That might lead you to believe that you can get around the string immutability restriction by simply treating strings as an array and assigning a new character to a specific index location inside the string, like this: string s = "The quick brown fox";s[2] = 'a';   However, if you were to write such code, the compiler will promptly tell you that you can’t do it: This preserves the notion that strings are immutable and cannot be changed once they are created. (Incidentally, there is no built in way to replace a single character like this. It can be done but it would require converting the string to a character array, changing the appropriate indexed location, and then creating a new string.)

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• Flex textarea control not updating properly.

  - by ielashi

  I am writing a flex application that involves modifying a textarea very frequently. I have encountered issues with the textarea sometimes not displaying my modifications. The following actionscript code illustrates my problem: <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="955" minHeight="600"> <mx:TextArea x="82" y="36" width="354" height="291" id="textArea" creationComplete="initApp()"/> <mx:Script> <![CDATA[ private var testSentence:String = "The big brown fox jumps over the lazy dog."; private var testCounter:int = 0; private function initApp():void { var timer:Timer = new Timer(10); timer.addEventListener(TimerEvent.TIMER, playSentence); timer.start(); } private function playSentence(event:TimerEvent):void { textArea.editable = false; if (testCounter == testSentence.length) { testCounter = 0; textArea.text += "\n"; } else { textArea.text += testSentence.charAt(testCounter++); } textArea.editable = true; } ]]> </mx:Script> </mx:Application> When you run the above code in a flex project, it should repeatedly print, character by character, the sentence "The big brown fox jumps over the lazy dog.". But, if you are typing into the textarea at the same time, you will notice the text the timer prints is distorted. I am really curious as to why this happens. The single-threaded nature of flex and disabling user input for the textarea when I make modifications should prevent this from happening, but for some reason this doesn't seem to be working. I must note too that, when running the timer at larger intervals (around 100ms) it seems to work perfectly, so I am tempted to think it's some kind of synchronization issue in the internals of the flex framework. Any ideas on what could be causing the problem?

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• How can I merge multiple Compass Resources into one, with one score?

  - by Brent Fisher

  I am trying to integrate compass into my platform using the JDBC ResultSetToResourceMapping. What I want to do is set it up so that I could have multiple result set mappings, tied to one Resource, that produces one result, with one score, and a merged score. I have tried to trick Compass into doing this by mapping the same id across them, even though the property fields are different, but it just ends up giving me separate hits for each. E.g. I have the following Data Model, Cases and Comments. One case might have several comments. Say I search for a term that appears in multiple comments. Right now, I a hit for each one, each with a different score. Is there a way that I could merge or aggregate those hits into one hit? Say, instead of Score Entity ID Snippets 100.0% Case 3558 ... The fox jumped over the lazy dog ... 60.0% Case 3558 ... In Alabama today, three jumping turtles were ... 25.0% Case 3558 ... Three jumpers fled the scene... I get Score Entity ID Snippets 100.0% Case 3558 The fox jumped over the lazy dog ...In Alabama today, three jumping turtles were ... Three jumpers fled the scene... Where the latter score is an aggregated score.

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• Table cell doesn't obey vertical-align CSS declaration when it contains a floated element

  - by mikez302

  I am trying to create a table, where each cell contains a big floated h1 on the left side, and a larger amount of small text to the right of the big text, vertically centered. However, the small text is showing up at the top of each cell, despite that it has a "vertical-align: middle" declaration. When I remove the big floated element, everything looks fine. I tested it in recent versions of IE, Firefox, and Safari, and this happened in every case. Why is this happening? Does anyone know of a way around it? Here is an example: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html><head> <meta http-equiv='Content-Type' content='text/html; charset=UTF-8'> <title>vertical-align test</title> <style type="text/css"> td { border: solid black 1px; vertical-align: middle; font-size: 12px} h1 { font-size: 40px; float: left} </style> </head> <body> <table> <tr> <td><h1>1</h1>The quick brown fox jumps over the lazy dog.</td> <td>The quick brown fox jumps over the lazy dog.</td> </tr> </table> </body></html> Notice that the small text in the first cell is at the top for some reason, but the text in the 2nd cell is vertically centered.

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• Time with and without OpenMP

  - by was

  I have a question.. I tried to improve a well known program algorithm in C, FOX algorithm for matrix multiplication.. relative link without openMP: (http://web.mst.edu/~ercal/387/MPI/ppmpi_c/chap07/fox.c). The initial program had only MPI and I tried to insert openMP in the matrix multiplication method, in order to improve the time of computation: (This program runs in a cluster and computers have 2 cores, thus I created 2 threads.) The problem is that there is no difference of time, with and without openMP. I observed that using openMP sometimes, time is equivalent or greater than the time without openMP. I tried to multiply two 600x600 matrices. void Local_matrix_multiply( LOCAL_MATRIX_T* local_A /* in */, LOCAL_MATRIX_T* local_B /* in */, LOCAL_MATRIX_T* local_C /* out */) { int i, j, k; chunk = CHUNKSIZE; // 100 #pragma omp parallel shared(local_A, local_B, local_C, chunk, nthreads) private(i,j,k,tid) num_threads(2) { /* tid = omp_get_thread_num(); if(tid == 0){ nthreads = omp_get_num_threads(); printf("O Pollaplasiamos pinakwn ksekina me %d threads\n", nthreads); } printf("Thread %d use the matrix: \n", tid); */ #pragma omp for schedule(static, chunk) for (i = 0; i < Order(local_A); i++) for (j = 0; j < Order(local_A); j++) for (k = 0; k < Order(local_B); k++) Entry(local_C,i,j) = Entry(local_C,i,j) + Entry(local_A,i,k)*Entry(local_B,k,j); } //end pragma omp parallel } /* Local_matrix_multiply */

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• IE8: intense flickering for Flash in Windows 7 RTM

  - by 280Z28

  Whenever I view a page with Flash on it (example www.fox.com), if I move my mouse around the page flickers intensely - like siezure inducing flicker. Is this a known issue, and is there a way to fix it? Windows 7 RTM x64 IE8 Flash Player, Acrobat Reader, Shockwave Player are all I installed Consistent across 3 very different machines (AMD ZM-82 + Radeon HD3200 laptop, Core i7 + NVidia GT220 desktop, P4D + NVidia 6400GT desktop), but all with the above software.

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• can't connect with Putty after editing configuration of SSH.

  - by Tristan

  Hello i guess i did something bad. i'm 150% new to dedicaced servers and i was editing the cfg file of putty. I didn't know how to save the file (:w and :q) so i quit putty. It crashed the file, i opened it again and saved it. but now, putty tells me : Access denied. How to fox that? :O Thanks,

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• Google I/O 2010 - Fireside chat with the Google Wave team

  Google I/O 2010 - Fireside chat with the Google Wave team Google I/O 2010 - Fireside chat with the Google Wave team Fireside Chats, Wave Lars Rasmussen, Douwe Osinga, Jochen Bekmann, Alan Green, Pamela Fox, Dan Peterson, Stephanie Hannon Join the Google Wave team around the campfire to chat about all things Wave: the product, the API platform, and the wave federation protocol. Come to learn about the new Wave API features, get tips on how to build the best extensions, discuss how to take advantage of the open source code available and hear more about what users are doing with the product. This is an excellent opportunity to ask the engineering team questions directly, and learn more about where Wave is heading. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 5 0 ratings Time: 56:17 More in Science & Technology

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