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• using 'ar' tool in Alchemy

  - by paleozogt

  I've found that if you specify a path to Alchemy's 'ar' tool, it won't create the 'l.bc' file necessary to link the library. For example, here is the case when I don't specify a path (it works): asimmons-mac:test asimmons$ echo 'int main() { return 42; }' > testmain.cpp asimmons-mac:test asimmons$ echo 'int test1() { return -1; }' > test1.cpp asimmons-mac:test asimmons$ echo 'int test2() { return 1; }' > test2.cpp asimmons-mac:test asimmons$ g++ -c testmain.cpp asimmons-mac:test asimmons$ g++ -c test1.cpp asimmons-mac:test asimmons$ g++ -c test2.cpp asimmons-mac:test asimmons$ ar cr libtest.a test1.o test2.o asimmons-mac:test asimmons$ g++ testmain.cpp libtest.a llvm-ld, "-o=".(98237.achacks.o = "98237.achacks.exe"), -disable-opt -internalize-public-api-list=_start,malloc,free,__adddi3,__anddi3,__ashldi3,__ashrdi3,__cmpdi2,__divdi3,__fixdfdi,__fixsfdi,__fixunsdfdi,__fixunssfdi,__floatdidf,__floatdisf,__floatunsdidf,__iordi3,__lshldi3,__lshrdi3,__moddi3,__muldi3,__negdi2,__one_cmpldi2,__qdivrem,__adddi3,__anddi3,__ashldi3,__ashrdi3,__cmpdi2,__divdi3,__qdivrem,__fixdfdi,__fixsfdi,__fixunsdfdi,__fixunssfdi,__floatdidf,__floatdisf,__floatunsdidf,__iordi3,__lshldi3,__lshrdi3,__moddi3,__muldi3,__negdi2,__one_cmpldi2,__subdi3,__ucmpdi2,__udivdi3,__umoddi3,__xordi3,__subdi3,__ucmpdi2,__udivdi3,__umoddi3,__xordi3,__error /Users/asimmons/Development/alchemy-darwin-v0.5a/avm2-libc/lib/avm2-libc.l.bc /Users/asimmons/Development/alchemy-darwin-v0.5a/avm2-libc/lib/avm2-libstdc++.l.bc, test.l.bc 98237.achacks.o 98237.achacks.swf, 5593510 bytes written asimmons-mac:test asimmons$ ls -l total 10992 -rwxr-xr-x 1 asimmons staff 5593575 Apr 9 17:44 a.exe -rw------- 1 asimmons staff 1284 Apr 9 17:43 libtest.a -rw-r--r-- 1 asimmons staff 672 Apr 9 17:43 test.l.bc -rw-r--r-- 1 asimmons staff 27 Apr 9 17:43 test1.cpp -rwxr-xr-x 1 asimmons staff 536 Apr 9 17:43 test1.o -rw-r--r-- 1 asimmons staff 26 Apr 9 17:43 test2.cpp -rwxr-xr-x 1 asimmons staff 536 Apr 9 17:43 test2.o -rw-r--r-- 1 asimmons staff 26 Apr 9 17:43 testmain.cpp -rwxr-xr-x 1 asimmons staff 552 Apr 9 17:43 testmain.o asimmons-mac:test asimmons$ And here is an example where I do specify a path (it doesn't work). I try to tell 'ar' to put the library under 'lib' and then link to lib/libtest.a: asimmons-mac:test asimmons$ mkdir lib asimmons-mac:test asimmons$ echo 'int main() { return 42; }' > testmain.cpp asimmons-mac:test asimmons$ echo 'int test1() { return -1; }' > test1.cpp asimmons-mac:test asimmons$ echo 'int test2() { return 1; }' > test2.cpp asimmons-mac:test asimmons$ g++ -c testmain.cpp asimmons-mac:test asimmons$ g++ -c test1.cpp asimmons-mac:test asimmons$ g++ -c test2.cpp asimmons-mac:test asimmons$ ar cr lib/libtest.a test1.o test2.o asimmons-mac:test asimmons$ g++ testmain.cpp lib/libtest.a llvm-ld, "-o=".(98638.achacks.o = "98638.achacks.exe"), -disable-opt -internalize-public-api-list=_start,malloc,free,__adddi3,__anddi3,__ashldi3,__ashrdi3,__cmpdi2,__divdi3,__fixdfdi,__fixsfdi,__fixunsdfdi,__fixunssfdi,__floatdidf,__floatdisf,__floatunsdidf,__iordi3,__lshldi3,__lshrdi3,__moddi3,__muldi3,__negdi2,__one_cmpldi2,__qdivrem,__adddi3,__anddi3,__ashldi3,__ashrdi3,__cmpdi2,__divdi3,__qdivrem,__fixdfdi,__fixsfdi,__fixunsdfdi,__fixunssfdi,__floatdidf,__floatdisf,__floatunsdidf,__iordi3,__lshldi3,__lshrdi3,__moddi3,__muldi3,__negdi2,__one_cmpldi2,__subdi3,__ucmpdi2,__udivdi3,__umoddi3,__xordi3,__subdi3,__ucmpdi2,__udivdi3,__umoddi3,__xordi3,__error /Users/asimmons/Development/alchemy-darwin-v0.5a/avm2-libc/lib/avm2-libc.l.bc /Users/asimmons/Development/alchemy-darwin-v0.5a/avm2-libc/lib/avm2-libstdc++.l.bc, lib/test.l.bc 98638.achacks.o llvm-ld: error: Cannot find linker input 'lib/test.l.bc' asimmons-mac:test asimmons$ ls -l total 56 -rw-r--r-- 1 asimmons staff 552 Apr 9 17:46 98638.achacks.o drwxr-xr-x 3 asimmons staff 102 Apr 9 17:46 lib -rw-r--r-- 1 asimmons staff 27 Apr 9 17:45 test1.cpp -rwxr-xr-x 1 asimmons staff 536 Apr 9 17:46 test1.o -rw-r--r-- 1 asimmons staff 26 Apr 9 17:45 test2.cpp -rwxr-xr-x 1 asimmons staff 536 Apr 9 17:46 test2.o -rw-r--r-- 1 asimmons staff 26 Apr 9 17:45 testmain.cpp -rwxr-xr-x 1 asimmons staff 552 Apr 9 17:45 testmain.o asimmons-mac:test asimmons$ ls -l lib/ total 8 -rw------- 1 asimmons staff 1284 Apr 9 17:46 libtest.a asimmons-mac:test asimmons$ but the linker errors out because it can't find lib/test.l.bc. Notice how in the first example, 'test.l.bc' was generated alongside libtest.a. But in the second example test.l.bc was not generated. Where did it go? This is a contrived example, but in the project I'm trying to build with alchemy the make scripts generate libraries in full paths and then refer to them that way. It seems that alchemy's 'ar' tool is broken if you try to generate a library anywhere other than '.'. Has anyone else seen this? Is there a workaround? fyi, I've also posted this question on the Alchemy formus.

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• BitmapFactory.decodeStream returning null when options are set.

  - by Robert Foss

  Hi! I'm having issues with BitmapFactory.decodeStream(). When using it without options, it will return an image. But when I use it with options as in .decodeStream(inputStream, null, options) it never returns Bitmaps. What I'm trying to do is to downsample a Bitmap before I actually load it to save memory. I've read some good guides, but none using .decodeStream. Here httpIM:NOT//nornalbion.SPAMcom/blog/?p=143 httpIM:NOT//kfb-android.blogspot.SPAMcom/2009/04/image-processing-in-android.html WORKS JUST FINE InputStream is = connection.getInputStream(); Bitmap img = BitmapFactory.decodeStream(is, null, options); DOESNT WORK InputStream is = connection.getInputStream(); Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeStream(is, null, options); Boolean scaleByHeight = Math.abs(options.outHeight - TARGET_HEIGHT) >= Math.abs(options.outWidth - TARGET_WIDTH); if(options.outHeight * options.outWidth * 2 >= 200*100*2){ // Load, scaling to smallest power of 2 that'll get it <= desired dimensions double sampleSize = scaleByHeight ? options.outHeight / TARGET_HEIGHT : options.outWidth / TARGET_WIDTH; options.inSampleSize = (int)Math.pow(2d, Math.floor( Math.log(sampleSize)/Math.log(2d))); System.out.println("Samplesize: " + options.inSampleSize); } // Do the actual decoding options.inJustDecodeBounds = false; //options.inTempStorage = new byte[IMG_BUFFER_LEN]; Bitmap img = BitmapFactory.decodeStream(is, null, options);

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• Issues Connecting to SQLExpress using Oracle SQL Developer

  - by ArtDeveloper

  Hey Guys, I'm trying to create a connection inside Oracle SQL Developer to a SQLExpress database I have Everything I have resides on the same machine so there isn't any network issues I should have to deal with but everytime I follow the instructions and I try to connect I get the following message "Failure - Unable to get information from SQL Server: localhost." I can connect to the SQLExpress DB using the SQL Management Studio and through an ODBC connection. I've installed the third party extensions and I've enabled the TCP protocol on the SQL Server Configuration manager as well as enabled the IP Addresses I'm assuming that the SQLExpress Database is on port 1433 because I didn't change this when I installed but if someone can tell me how to double check that I would appreciate that info as well. I setup the new connection with the following information name: databasename I'm using windows authentication so the username and password aren't filled in host:localhost port:1433/databasename;instance=SQLEXPRESS *databasename - this is replaced with the actual DB name I've just changed the name here to protect the innocent I've spent about a full day on this trying to get it connected and many google attempts where other ppl have had this issue but have gotten it solved through various methods that I've tried and it hasn't resolved my issue. Any information would be much appreciated Thank you in Advance, AD

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• LINQ-to-SQL: Could not find key member 'x' of key 'x' on type 'y'

  - by Austin Hyde

  I am trying to connect my application to a SQLite database with LINQ-to-SQL, and so far everything has worked fine. The only hitch was that the SQLite provider I am using does not support code generation (unless I was doing something wrong), so I manually coded the 4 tables in the DB. The solution builds properly, but will not run, giving me the error message Could not find key member 'ItemType_Id' of key 'ItemType_Id' on type 'Item'. The key may be wrong or the field or property on 'Item' has changed names. I have checked and double checked spellings and field names on the database and in the attribute mappings, but could not find any problems. The SQL for the table looks like this: CREATE TABLE [Items] ( [Id] integer PRIMARY KEY AUTOINCREMENT NOT NULL, [Name] text NOT NULL, [ItemType_Id] integer NOT NULL ); And my mapping code: [Table(Name="Items")] class Item { // [snip] [Column(Name = "Id", IsPrimaryKey=true, IsDbGenerated=true)] public int Id { get; set; } // [snip] [Column(Name="ItemType_Id")] public int ItemTypeId { get; set; } [Association(Storage = "_itemType", ThisKey = "ItemType_Id")] public ItemType ItemType { get { return _itemType.Entity; } set { _itemType.Entity = value; } } private EntityRef<ItemType> _itemType; // [snip] } This is really my first excursion into LINQ-to-SQL, and am learning as I go, but I cannot seem to get past this seeming simple problem. Why cannot LINQ see my association?

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• How can I effectively test a scripting engine?

  - by ChaosPandion

  I have been working on an ECMAScript implementation and I am currently working on polishing up the project. As a part of this, I have been writing tests like the following: [TestMethod] public void ArrayReduceTest() { var engine = new Engine(); var request = new ExecScriptRequest(@" var a = [1, 2, 3, 4, 5]; a.reduce(function(p, c, i, o) { return p + c; }); "); var response = (ExecScriptResponse)engine.PostWithReply(request); Assert.AreEqual((double)response.Data, 15D); } The problem is that there are so many points of failure in this test and similar tests that it almost doesn't seem worth it. It almost seems like my effort would be better spent reducing coupling between modules. To write a true unit test I would have to assume something like this: [TestMethod] public void CommentTest() { const string toParse = "/*First Line\r\nSecond Line*/"; var analyzer = new LexicalAnalyzer(toParse); { Assert.IsInstanceOfType(analyzer.Next(), typeof(MultiLineComment)); Assert.AreEqual(analyzer.Current.Value, "First Line\r\nSecond Line"); } } Doing this would require me to write thousands of tests which once again does not seem worth it.

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• Crystal Reports Programmatic Image Resizing... Scale?

  - by C. Griffin

  I'm working with a Crystal Reports object in Visual Studio 2008 (C#). The report is building fine and the data is binding correctly. However, when I try to resize an IBlobFieldObject from within the source, the scale is getting skewed. Two notes about this scenario. Source image is 1024x768, my max width and height are 720x576. My math should be correct that my new image size will be 720x540 (to fit within the max width and height guidelines). The ratio is wrong when I do this though: img = Image.FromFile(path); newWidth = img.Size.Width; newHeight = img.Size.Height; if ((img.Size.Width > 720) || (img.Size.Height > 576)) { double ratio = Convert.ToDouble(img.Size.Width) / Convert.ToDouble(img.Size.Height); if (ratio > 1.25) // Adjust width to 720, height will fall within range { newWidth = 720; newHeight = Convert.ToInt32(Convert.ToDouble(img.Size.Height) * 720.0 / Convert.ToDouble(img.Size.Width)); } else // Adjust height to 576, width will fall within range { newHeight = 576; newWidth = Convert.ToInt32(Convert.ToDouble(img.Size.Width) * 576.0 / Convert.ToDouble(img.Size.Height)); } imgRpt.Section3.ReportObjects["image"].Height = newHeight; imgRpt.Section3.ReportObjects["image"].Width = newWidth; } I've stepped through the code to make sure that the values are correct from the math, and I've even saved the image file out to make sure that the aspect ratio is correct (it was). No matter what I try though, the image is squashed--almost as if the Scale values are off in the Crystal Reports designer (they're not). Thanks in advance for any help!

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• function to get the file name of an URL

  - by user262325

  Hello everyone I have some source code to get the file name of an url for example: http://www.google.com/a.pdf I hope to get a.pdf because the way to join 2 NSStrings I can get is 'appendString' which only for adding a string at right side, so I planned to check each char one by one from the right side of string 'http://www.google.com/a.pdf', when it reach at the char '/', stop the checking, return string fdp.a , after that I change fdp.a to a.pdf source codes are below -(NSMutableString *) getSubStringAfterH : originalString:(NSString *)s0 { NSInteger i,l; l=[s0 length]; NSMutableString *h=[[NSMutableString alloc] init]; NSMutableString *ttt=[[NSMutableString alloc] init ]; for(i=l-1;i>=0;i--) //check each char one by one from the right side of string 'http://www.google.com/a.pdf', when it reach at the char '/', stop { ttt=[s0 substringWithRange:NSMakeRange(i, 1)]; if([ttt isEqualToString:@"/"]) { break; } else { [h appendString:ttt]; } } [ttt release]; //below are to change the sequence of char in h // txt.edcba -> abcde.txt NSMutableString *h1=[[[NSMutableString alloc] initWithFormat:@""] autorelease]; for (i=[h length]-1;i>=0;i--) { NSMutableString *t1=[[NSMutableString alloc] init ]; t1=[h substringWithRange:NSMakeRange(i, 1)]; [h1 appendString:t1]; [t1 release]; } [h release]; return h1; } h1 can reuturn the coorect string a.pdf, but if it returns to the codes where it was called, after a while system reports 'double free * set a breakpoint in malloc_error_break to debug' I checked a long time and foudn that if I removed the code ttt=[s0 substringWithRange:NSMakeRange(i, 1)]; everything will be Ok (of course getSubStringAfterH can not returns the corrent result I expected.), no error reported. I try to fix the bug a few hours, but still no clue. Welcome any comment Thanks interdev

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• Common coding style for Python?

  - by Oscar Carballal

  Hi, I'm pretty new to Python, and I want to develop my first serious open source project. I want to ask what is the common coding style for python projects. I'll put also what I'm doing right now. 1.- What is the most widely used column width? (the eternal question) I'm currently sticking to 80 columns (and it's a pain!) 2.- What quotes to use? (I've seen everything and PEP 8 does not mention anything clear) I'm using single quotes for everything but docstrings, which use triple double quotes. 3.- Where do I put my imports? I'm putting them at file header in this order. import sys import -rest of python modules needed- import whatever import -rest of application modules- <code here> 4.- Can I use "import whatever.function as blah"? I saw some documents that disregard doing this. 5.- Tabs or spaces for indenting? Currently using 4 spaces tabs. 6.- Variable naming style? I'm using lowercase for everything but classes, which I put in camelCase. Anything you would recommend?

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• Programmatically swap colors from a loaded bitmap to Red, Green, Blue or Gray, pixel by pixel.

  - by eyeClaxton

  Download source code here: http://www.eyeClaxton.com/download/delphi/ColorSwap.zip I would like to take a original bitmap (light blue) and change the colors (Pixel by Pixel) to the red, green, blue and gray equivalence relation. To get an idea of what I mean, I have include the source code and a screen shot. Any help would be greatly appreciated. If more information is needed, please feel free to ask. If you could take a look at the code below, I have three functions that I'm looking for help on. The functions "RGBToRed, RGBToGreen and RGBToRed" I can't seem to come up with the right formulas. unit MainUnit; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls, StdCtrls; type TMainFrm = class(TForm) Panel1: TPanel; Label1: TLabel; Panel2: TPanel; Label2: TLabel; Button1: TButton; BeforeImage1: TImage; AfterImage1: TImage; RadioGroup1: TRadioGroup; procedure FormCreate(Sender: TObject); procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var MainFrm: TMainFrm; implementation {$R *.DFM} function RGBToGray(RGBColor: TColor): TColor; var Gray: Byte; begin Gray := Round( (0.90 * GetRValue(RGBColor)) + (0.88 * GetGValue(RGBColor)) + (0.33 * GetBValue(RGBColor))); Result := RGB(Gray, Gray, Gray); end; function RGBToRed(RGBColor: TColor): TColor; var Red: Byte; begin // Not sure of the algorithm for this color Result := RGB(Red, Red, Red); end; function RGBToGreen(RGBColor: TColor): TColor; var Green: Byte; begin // Not sure of the algorithm for this color Result := RGB(Green, Green, Green); end; function RGBToBlue(RGBColor: TColor): TColor; var Blue: Byte; begin // Not sure of the algorithm for this color Result := RGB(Blue, Blue, Blue); end; procedure TMainFrm.FormCreate(Sender: TObject); begin BeforeImage1.Picture.LoadFromFile('Images\RightCenter.bmp'); end; procedure TMainFrm.Button1Click(Sender: TObject); var Bitmap: TBitmap; I, X: Integer; Color: Integer; begin Bitmap := TBitmap.Create; try Bitmap.LoadFromFile('Images\RightCenter.bmp'); for X := 0 to Bitmap.Height do begin for I := 0 to Bitmap.Width do begin Color := ColorToRGB(Bitmap.Canvas.Pixels[I, X]); case Color of $00000000: ; // Skip any Color Here! else case RadioGroup1.ItemIndex of 0: Bitmap.Canvas.Pixels[I, X] := RGBToBlue(Color); 1: Bitmap.Canvas.Pixels[I, X] := RGBToRed(Color); 2: Bitmap.Canvas.Pixels[I, X] := RGBToGreen(Color); 3: Bitmap.Canvas.Pixels[I, X] := RGBToGray(Color); end; end; end; end; AfterImage1.Picture.Graphic := Bitmap; finally Bitmap.Free; end; end; end. Okay, I apologize for not making it clearer. I'm trying to take a bitmap (blue in color) and swap the blue pixels with another color. Like the shots below.

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• cakephp paginate using mysql SQL_CALC_FOUND_ROWS

  - by michael

  I'm trying to make Cakephp paginate take advantage of the SQL_CALC_FOUND_ROWS feature in mysql to return a count of total rows while using LIMIT. Hopefully, this can eliminate the double query of paginateCount(), then paginate(). http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_found-rows I've put this in my app_model.php, and it basically works, but it could be done better. Can someone help me figure out how to override paginate/paginateCount so it executes only 1 SQL stmt? /** * Overridden paginateCount method, to using SQL_CALC_FOUND_ROWS */ public function paginateCount($conditions = null, $recursive = 0, $extra = array()) { $options = array_merge(compact('conditions', 'recursive'), $extra); $options['fields'] = "SQL_CALC_FOUND_ROWS `{$this->alias}`.*"; Q: how do you get the SAME limit value used in paginate()? $options['limit'] = 1; // ideally, should return same rows as in paginate() Q: can we somehow get the query results to paginate directly, without the extra query? $cache_results_from_paginateCount = $this->find('all', $options); /* * note: we must run the query to get the count, but it will be cached for multiple paginates, so add comment to query */ $found_rows = $this->query("/* do not cache for {$this->alias} */ SELECT FOUND_ROWS();"); $count = array_shift($found_rows[0][0]); return $count; } /** * Overridden paginate method */ public function paginate($conditions, $fields, $order, $limit, $page = 1, $recursive = null, $extra = array()) { $options = array_merge(compact('conditions', 'fields', 'order', 'limit', 'page', 'recursive'), $extra); Q: can we somehow get $cache_results_for_paginate directly from paginateCount()? return $cache_results_from_paginateCount; // paginate in only 1 SQL stmt return $this->find('all', $options); // ideally, we could skip this call entirely }

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• Median Filter a bi-level image with JAI

  - by Mark

  I'd like to apply a Median Filter to a bi-level image and output a bi-level image. The JAI median filter seems to output an RGB image, which I'm having trouble downconverting back to bi-level. Currently I can't even get the image back into gray color-space, my code looks like this: BufferedImage src; // contains a bi-level image ParameterBlock pb = new ParameterBlock(); pb.addSource(src); pb.add(MedianFilterDescriptor.MEDIAN_MASK_SQUARE); pb.add(3); RenderedOp result = JAI.create("MedianFilter", pb); ParameterBlock pb2 = new ParameterBlock(); pb2.addSource(result); pb2.add(new double[][]{{0.33, 0.34, 0.33, 0}}); RenderedOp grayResult = JAI.create("BandCombine", pb2); BufferedImage foo = grayResult.getAsBufferedImage(); This code hangs on the grayResult line and appears not to return. I assume that I'll eventually need to call the "Binarize" operation in JAI. Edit: Actually, the code appears to be stalling once I call getAsBufferedImage(), but returns nearly instantly when the second operation ("BandCombine") is removed. Is there a better way to keep the Median Filtering in the source color domain? If not, how do I downconvert back to binary?

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• Yii: Multi-language website - best practices.

  - by michal

  Hi, I find Yii great framework, and the example website created with yiic shell is a good point to start... however it doesn't cover the topic of multi-language websites, unfortunately. The docs covers the topic of translating short messages, but not keeping the multi-lingual content ... I'm about to start working on a website which needs to be in at least two languages, and I'm wondering what is the best way to keep content for that ... The problem is that the content is mixed extensively with common elements (like embedded video files). I need to avoid duplicating those commons ... so far I used to have an array of arrays containing texts (usually no more than 1-2 short paragraphs), then the view file was just rendering the text from an array. Now I'd like to avoid keeping it in arrays (which requires some attention when putting double quotations " " and is inconvenient in general...). So, what is the best way to keep those short paragraphs? Should I keep them in DB like (id | msg_id | language | content ) and then select them by msg_id & language? That still requires me to create some msg_id's and embed them into view file ... Is there any recommended paradigm for which Yii has some solutions? Thanks, m.

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• Segmentation fault while matrix multiplication using openMp?

  - by harshit

  My matrix multiplication code is int matMul(int ld, double** matrix) { //local variables initialize omp_set_num_threads(nthreads); #pragma omp parallel private(tid,diag,ld) shared(i,j,k,matrix) { /* Obtain and print thread id */ tid = omp_get_thread_num(); for ( k=0; k<ld; k++) { if (matrix[k][k] == 0.0) { error = 1; return error; } diag = 1.0 / matrix[k][k]; #pragma omp for for ( i=k+1; i < ld; i++) { matrix[i][k] = diag * matrix[i][k]; } for ( j=k+1; j<ld; j++) { for ( i=k+1; i<ld; i++) { matrix[i][j] = matrix[i][j] - matrix[i][k] * matrix[k][j]; } } } } return error; } I assume that it is because of matrix object only but why will it be null even though it is passed as a parameter..

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• Best way to sanitize content with PHP?

  - by Jens Törnell

  Which is the best way to "sanitize" content? An example... Example - Before sanitize: Morbi mollis ante vitae massa suscipit a tempus est pellentesque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nulla mattis iaculis consectetur. Morbi mollis ante vitae est pellentesque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nulla mattis iaculis consectetur. Example - After sanitize: <p>Morbi mollis ante vitae massa suscipit a tempus est pellentesque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nulla mattis iaculis consectetur.</p> <p>Morbi mollis ante vitae est pellentesque. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nulla mattis iaculis consectetur.</p> What it should do It should add p-tags instead of line break like. It should remove empty space like tripple spaces It should remove double line breaks. It should remove tabs. It should remove line breaks and spaces before the content if any. It should remove line breaks and spaces after the content if any. Right know I use the str_replace function and it should be a better solution for this? I want the function to look like this: function sanitize($content) { // Do the magic! return $content; }

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• How can I use Convert.ChangeType to convert string into numerics with group separator?

  - by Loic

  Hello, I want to make a generic string to numeric converter, and provide it as a string extension, so I wrote the following code: public static bool TryParse<T>( this string text, out T result, IFormatProvider formatProvider ) where T : struct try { result = (T)Convert.ChangeType( text, typeof( T ), formatProvider ); return true; } catch(... I call it like this: int value; var ok = "123".TryParse(out value, NumberFormatInfo.CurrentInfo) It works fine until I want to use a group separator: As I live in France, where the thousand separator is a space and the decimal separator is a comma, the string "1 234 567,89" should be equals to 1234567.89 (in Invariant culture). But, the function crashes! When a try to perform a non generic conversion, like double.Parse(...), I can use an overload which accepts a NumberStyles parameter. I specify NumberStyles.Number and this time it works! So, the questions are : Why the parsing does not respect my NumberFormatInfo (where the NumberGroupSeparator is well specified to a space, as I specified in my OS) How could I make work the generic version with Convert.ChangeTime, as it has no overload wich accepts a NumberStyles parameter ?

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• C# Random Number Generator getting stuck in a cycle

  - by Jean Azzopardi

  Hi, I am using .NET to create an artificial life program and I am using C#'s pseudo random class defined in a Singleton. The idea is that if I use the same random number generator throughout the application, I could merely save the seed and then reload from the seed to recompute a certain interesting run. public sealed class RandomNumberGenerator : Random { private static readonly RandomNumberGenerator instance = new RandomNumberGenerator(); RandomNumberGenerator() { } public static RandomNumberGenerator Instance { get { return instance; } } } I also wanted a method that could give me two different random numbers. public static Tuple<int, int> TwoDifferentRandomNumbers(this Random rnd, int minValue, int maxValue) { if (minValue >= maxValue) throw new ArgumentOutOfRangeException("maxValue", "maxValue must be greater than minValue"); if (minValue + 1 == maxValue) return Tuple.Create<int, int>(minValue, maxValue); int rnd1 = rnd.Next(minValue, maxValue); int rnd2 = rnd.Next(minValue, maxValue); while (rnd1 == rnd2) { rnd2 = rnd.Next(minValue, maxValue); } return Tuple.Create<int, int>(rnd1, rnd2); } The problem is that sometimes rnd.Next(minValue,maxValuealways returns minValue. If I breakpoint at this point and try creating a double and setting it to rnd.NextDouble(), it returns 0.0. Anyone know why this is happening? I know that it is a pseudo random number generator, but frankly, I hadn't expected it to lock at 0. The random number generator is being accessed from multiple threads... could this be the source of the problem?

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• Diagramming Software for a Developer/Designer

  - by Craig Walker

  For a long time I've been looking for a good diagramming/vector-based drawing program that meets my needs as a developer. I'd like to: Draw database diagrams Draw flow charts Draw object-modeling diagrams (UML being the standard) Draw other free-form diagrams (basically boxes & arrows with the occasional clipart) Draw mockups of user interfaces and web pages EDIT: I want good-looking electronic-format diagrams that I can show to 3rd parties, not just something for my own internal use. EDIT 2: I'm also looking for Windows software, although I'm toying with the idea of switching to Mac, so a really good Mac-only product might get me to switch. Basically I need a good vector graphic program (with decent grouping, connecting lines, and ideally auto-routing). I'd prefer a diagramming tool that can also be used for drawing (for the UI mockups) rather than a drawing tool that can also be used for diagrams. I've tried Visio on several occasions, and every time I've been disappointed. The interface always seems to get in my way at some point. It's pretty close to what I want, and the latest version (I got the trail from MS) seems to be better than previous ones in terms of usability, but I really don't want to plunk down that sort of cash for a mediocre product. I've tried Dia and Inkscape, and while initially promising and with the right price tag, I found both of them to be lacking in several ways (including some recurring bugs). I've toyed with getting Adobe Illustrator, but I've never used it before, and I have a feeling that it wouldn't handle the diagramming aspect very well, and I don't want to buy a copy just to find out it doesn't meet my needs. So far, the product that I've had the most success with is, sadly, OpenOffice Draw. It's free of course (which lowers my expectations and thus improves my view of it) and its usability is pretty good, but in the end I'd like something more suited to diagramming. I'm willing to spend real money (in the $500-$1K range) for a really good piece of software if it does everything I want it to. The front runner is of course Visio but I'm hoping for more. Does anybody have any recommendations? CONCLUSION: @dlamblin had the most informative post, but the part I gained the most from was his/her (and others) mention of OmniGraffle, not Gliffy. I gave Gliffy a try, and it seemed neet for occational use, but since it's a Flash app (note: not AJAX as dlamblin mentioned) it's still a bit of a pain to use (no keyboard shortcuts for copy/paste was pretty much a deal breaker for me). I also tried SmartDraw, but it had 3-strikes-you're-out against it: The trial period was only 7 days long. It used some nonstandard (and visually jarring) GUI widget toolkit for its UI. At the very least it makes me suspicious (how do I know it will actually work & support the standard Windows features?) It crashed on me early into my trial. OmniGraffle looks like exactly what I want... except that it's Mac-only (so I couldn't give it a try). However, it got good reviews from my Mac-owning coworker, and I hope to try it on a friend's Mac soon. If it's good enough then I might spring for a new MacBook.

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• jquery jeditable pass multiple values...

  - by Scott

  Alright totally new to jeditable, Say I have some <div>'s and <input type='hidden' /> items that are generated dynamically with PHP like this: <?php while($row = $db->fetch_assoc($query)) : ?> <input name="hiddenID" type="hidden" value="<?php echo $row['id'] ?>" <div class="items"><?php echo $row['item']; ?></div> <?php endwhile; ?> Which gives me say...this: 1 //hidden value item1 2 //hidden value item2 3 //hidden value item3 And a jeditable inline-edit script to go along with it: hidden = $(".items").siblings("[name=hiddenID]").val(); //using a global var..don't know how to pass it into the editable function. $(".items").editable('save.php', { type : 'text', tooltip : 'Double-Click to edit...', onblur : 'submit', event : 'dblclick', submitdata : function() { return {id : hidden }; //how do I pass mutiple hiddenID values?? } }); I am wondering how to pass multiple values into the editable function. The way I've shown here only passes one value...the first row.

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• Problem with multiple event handling in JQuery

  - by Greg

  Hi everyone, I have a strange jquery problem with multiple event handlers. What I'm trying to achieve is this: User selects some text on the page If the selection is not empty - show a context menu If user clicks somewhere else - the context menu should disappear I'm having troubles with the above i.e. sometimes the context menu appears correctly, sometimes it appears and disappears straight after user makes a selection. Please help. See the relevant parts of my code below. Also when user selects a paragraph or a word by double clicking - context menu appears and quickly disappears again. var ContextMenu = { ... show: function(e) { var z = this; if (!this.shown) { if (this.contextMenu) { this.contextMenu.css({ left: e.pageX, top: e.pageY }).slideDown('fast'); this.shown = true; } var hideHandler = function() { z.hide(this); }; $(document.body).bind("click", hideHandler); } }, hide: function(hideHandler) { if (this.contextMenu && this.shown) { this.contextMenu.slideUp('fast'); this.shown = false; $(document.body).unbind("click", hideHandler); } } }; // Context menu display logic $(document.body).bind("mousedown mouseup", function(e) { if ((window.getSelection().toString() != "") && (!ContextMenu.shown)) { ContextMenu.show(e); } });

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• How do I configure a C# web service client to send HTTP request header and body in parallel?

  - by Christopher

  Hi, I am using a traditional C# web service client generated in VS2008 .Net 3.5, inheriting from SoapHttpClientProtocol. This is connecting to a remote web service written in Java. All configuration is done in code during client initialization, and can be seen below: ServicePointManager.Expect100Continue = false; ServicePointManager.DefaultConnectionLimit = 10; var client = new APIService { EnableDecompression = true, Url = _url + "?guid=" + Guid.NewGuid(), Credentials = new NetworkCredential(user, password, null), PreAuthenticate = true, Timeout = 5000 // 5 sec }; It all works fine, but the time taken to execute the simplest method call is almost double the network ping time. Whereas a Java test client takes roughly the same as the network ping time: C# client ~ 550ms Java client ~ 340ms Network ping ~ 300ms After analyzing the TCP traffic for a session discovered the following: Basically, the C# client sent TCP packets in the following sequence. Client Send HTTP Headers in one packet. Client Waits For TCP ACK from server. Client Sends HTTP Body in one packet. Client Waits For TCP ACK from server. The Java client sent TCP packets in the following sequence. Client Sends HTTP Headers in one packet. Client Sends HTTP Body in one packet. Client Revieves ACK for first packet. Client Revieves ACK for second packet. Client Revieves ACK for second packet. Is there anyway to configure the C# web service client to send the header/body in parallel as the Java client appears to? Any help or pointers much appreciated.

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• Setting WPF RichTextBox width and height according to the size of a monospace font

  - by oxeb

  I am trying to fit a WPF RichTextBox to exactly accommodate a grid of characters in a particular monospace font. I am currently using FormattedText to determine the width and height of my RichTextBox, but the measurements it is providing me with are too small--specifically two characters in width too small. Is there a better way to perform this task? This does not seem to be an appropriate way to determine the size of my control. RichTextBox rtb; rtb = new RichTextBox(); FontFamily fontFamily = new FontFamily("Consolas"); double fontSize = 16; char standardizationCharacter = 'X'; String standardizationLine = ""; for(long loop = 0; loop < columns; loop ++) { standardizationLine += standardizationCharacter; } standardizationLine += Environment.NewLine; String standardizationString = ""; for(long loop = 0; loop < rows; loop ++) { standardizationString += standardizationLine; } Typeface typeface = new Typeface(fontFamily, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal); FormattedText formattedText = new FormattedText(standardizationString, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, typeface, fontSize, Brushes.Black); rtb.Width = formattedText.Width; rtb.Height = formattedText.Height;

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• xcopy failing within TFSbuild

  - by mattgcon

  I am using TFS2008 and within my TFSBuild.proj file I have a target that call xcopy to copy the build to the production website location for automation. However I am receiving the following error when running the build: Task "Exec" Command: xcopy "\\test\TFSBuilds\Online System V2 Build to NETPUB_20100430.2\Debug\_PublishedWebsites\IPAMIntranet" " C:\\Inetpub\wwwroot\IPAMOnlineSystem\IPAMIntranet\IPAMIntranet " /E Parse Error 'C:\\Inetpub\wwwroot\IPAMOnlineSystem\IPAMIntranet\IPAMIntranet' is not recognized as an internal or external command, operable program or batch file. '" /E ' is not recognized as an internal or external command, operable program or batch file. The following is my code line for the xcopy: <Target Name="AfterDropBuild"> <Exec Command="xcopy &quot;$(DropLocation)\$(BuildNumber)\Debug\_PublishedWebsites\IPAMIntranet&quot; &quot;$(RemoteDeploySitePath)&quot; /E " /> </Target> I have even tried single quotes around the file locations and actual double quotes insteand of the " symbols. Why is this happening, can anyone decipher this for me and help me correct this.

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• Implementing Naïve Bayes algorithm in Java - Need some guidance

  - by techventure

  hello stackflow people As a School assignment i'm required to implement Naïve Bayes algorithm which i am intending to do in Java. In trying to understand how its done, i've read the book "Data Mining - Practical Machine Learning Tools and Techniques" which has a section on this topic but am still unsure on some primary points that are blocking my progress. Since i'm seeking guidance not solution in here, i'll tell you guys what i thinking in my head, what i think is the correct approach and in return ask for correction/guidance which will very much be appreciated. please note that i am an absolute beginner on Naïve Bayes algorithm, Data mining and in general programming so you might see stupid comments/calculations below: The training data set i'm given has 4 attributes/features that are numeric and normalized(in range[0 1]) using Weka (no missing values)and one nominal class(yes/no) 1) The data coming from a csv file is numeric HENCE * Given the attributes are numeric i use PDF (probability density function) formula. + To calculate the PDF in java i first separate the attributes based on whether they're in class yes or class no and hold them into different array (array class yes and array class no) + Then calculate the mean(sum of the values in row / number of values in that row) and standard divination for each of the 4 attributes (columns) of each class + Now to find PDF of a given value(n) i do (n-mean)^2/(2*SD^2), + Then to find P( yes | E) and P( no | E) i multiply the PDF value of all 4 given attributes and compare which is larger, which indicates the class it belongs to In temrs of Java, i'm using ArrayList of ArrayList and Double to store the attribute values. lastly i'm unsure how to to get new data? Should i ask for input file (like csv) or command prompt and ask for 4 values? I'll stop here for now (do have more questions) but I'm worried this won't get any responses given how long its got. I will really appreciate for those that give their time reading my problems and comment.

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• Subset a data.frame by list and apply function on each part, by rows

  - by aL3xa

  This may seem as a typical plyr problem, but I have something different in mind. Here's the function that I want to optimize (skip the for loop). # dummy data set.seed(1985) lst <- list(a=1:10, b=11:15, c=16:20) m <- matrix(round(runif(200, 1, 7)), 10) m <- as.data.frame(m) dfsub <- function(dt, lst, fun) { # check whether dt is `data.frame` stopifnot (is.data.frame(dt)) # check if vectors in lst are "whole" / integer # vector elements should be column indexes is.wholenumber <- function(x, tol = .Machine$double.eps^0.5) abs(x - round(x)) < tol # fall if any non-integers in list idx <- rapply(lst, is.wholenumber) stopifnot(idx) # check for list length stopifnot(ncol(dt) == length(idx)) # subset the data subs <- list() for (i in 1:length(lst)) { # apply function on each part, by row subs[[i]] <- apply(dt[ , lst[[i]]], 1, fun) } # preserve names names(subs) <- names(lst) # convert to data.frame subs <- as.data.frame(subs) # guess what =) return(subs) } And now a short demonstration... actually, I'm about to explain what I primarily intended to do. I wanted to subset a data.frame by vectors gathered in list object. Since this is a part of code from a function that accompanies data manipulation in psychological research, you can consider m as a results from personality questionnaire (10 subjects, 20 vars). Vectors in list hold column indexes that define questionnaire subscales (e.g. personality traits). Each subscale is defined by several items (columns in data.frame). If we presuppose that the score on each subscale is nothing more than sum (or some other function) of row values (results on that part of questionnaire for each subject), you could run: > dfsub(m, lst, sum) a b c 1 46 20 24 2 41 24 21 3 41 13 12 4 37 14 18 5 57 18 25 6 27 18 18 7 28 17 20 8 31 18 23 9 38 14 15 10 41 14 22 I took a glance at this function and I must admit that this little loop isn't spoiling the code at all... BUT, if there's an easier/efficient way of doing this, please, let me know!

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• Binary stream 'NN' does not contain a valid BinaryHeader. Possible causes are invalid stream or obje

  - by FinancialRadDeveloper

  I am passing user defined classes over sockets. The SendObject code is below. It works on my local machine, but when I publish to the WebServer which is then communicating with the App Server on my own machine it fails. public bool SendObject(Object obj, ref string sErrMsg) { try { MemoryStream ms = new MemoryStream(); BinaryFormatter bf1 = new BinaryFormatter(); bf1.Serialize(ms, obj); byte[] byArr = ms.ToArray(); int len = byArr.Length; m_socClient.Send(byArr); return true; } catch (Exception e) { sErrMsg = "SendObject Error: " + e.Message; return false; } } I can do this fine if it is one class in my tools project and the other class about UserData just doesn't want to know. Frustrating! Ohh. I think its because the UserData class has a DataSet inside it. Funnily enough I have seen this work, but then after 1 request it goes loopy and I can't get it to work again. Anyone know why this might be? I have looked at comparing the dlls to make sure they are the same on the WebServer and on my local machine and they look to be so as I have turned on versioning in the AssemblyInfo.cs to double check. Edit: Ok it seems that the problem is with size. If I keep it under 1024 byes ( I am guessing here) it works on the web server and doesnt if it has a DataSet inside it.k In fact this is so puzzling I converted the DataSet to a string using ds.GetXml() and this also causes it to blow up. :( So it seems that across the network something with my sockets is wrong and doesn't want to read in the data. JonSkeet where are you. ha ha. I would offer Rep but I don't have any. Grr

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