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• Slow SelectSingleNode

  - by Simon

  I have a simple structured XML file like this: <ttest ID="ttest00001", NickName="map00001"/> <ttest ID="ttest00002", NickName="map00002"/> <ttest ID="ttest00003", NickName="map00003"/> <ttest ID="ttest00004", NickName="map00004"/> ..... This xml file can be around 2.5MB. In my source code I will have a loop to get nicknames In each loop, I have something like this: nickNameLoopNum = MyXmlDoc.SelectSingleNode("//ttest[@ID=' + testloopNum + "']").Attributes["NickName"].Value This single line will cost me 30 to 40 millisecond. I searched some old articles (dated back to 2002) saying, use some sort of compiled "xpath" can help the situation, but that was 5 years ago. I wonder is there a mordern practice to make it faster? (I'm using .NET 3.5)

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• "Replay" the steps needed to recreate an error

  - by David

  I am going to create a typical business application that will be used by a few hundred consultants. Normally, the consultants would be presented with an error message with a standard text. As the application will be a complicated one with lots of changes being made to it constantly I would like the following: When an error message is presented, the user has the option to "send" the error message to the developers. The developers should be able to open the incoming file in i.e. Eclipse and debug the steps of the last 10 minutes of work step by step (one line at a time if they want to). Everything should be transparent, meaning that they for example should be able to see the return values of calls to the database. Are there any solutions that offer such functionality today, my preferred language is Python or also Java. I know that there will be a huge performance hit because of such functionality, but that is acceptable as this kind of software is not performance sensitive. It would be VERY nice if the database also had a cronology so that one could query the database for values that existed at the exact time that a specific line of code was run in the application, leading up to the bug.

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• Imagemagick - File Naming

  - by Josh Crowder

  I am using the convert command to convert a pdf to multiple pngs, I need the naming conventions to be slide-##.png at the moment they come out like slide-1.png but because there is 20+ slides when I loop through them to add them into the model the order comes up wrong, so it looks like slide-1.png slide-10.png slide-11.png and so on, how can I force convert to use double numbers like 01 02 03 and so forth or is there a better way to loop through them, this is the code I have at the moment def convert_keynote_to_slides system('convert -size 640x300 ' + keynote.queued_for_write[:original].path + ' ~/rails/arcticfox/public/system/keynotes/slides/'+File.basename( self.keynote_file_name )+'0%d.png') slide_basename = File.basename( self.keynote_file_name ) files = Dir.entries('/Users/joshcrowder/rails/arcticfox/public/system/keynotes/slides') for file in files #puts file if file.include?(slide_basename +'-') self.slides.build("slide" => "#{file}") if file.include?(slide_basename) end end

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• java BufferedReader specific length returns NUL characters

  - by Bastien

  I have a TCP socket client receiving messages (data) from a server. messages are of the type length (2 bytes) + data (length bytes), delimited by STX & ETX characters. I'm using a bufferedReader to retrieve the two first bytes, decode the length, then read again from the same bufferedReader the appropriate length and put the result in a char array. most of the time, I have no problem, but SOMETIMES (1 out of thousands of messages received), when attempting to read (length) bytes from the reader, I get only part of it, the rest of my array being filled with "NUL" characters. I imagine it's because the buffer has not yet been filled. char[] bufLen = new char[2]; _bufferedReader.read(bufLen); int len = decodeLength(bufLen); char[] _rawMsg = new char[len]; _bufferedReader.read(_rawMsg); return _rawMsg; I solved the problem in several iterative ways: first I tested the last char of my array: if it wasn't ETX I would read chars from the bufferedReader one by one until I would reach ETX, then start over my regular routine. the consequence is that I would basically DROP one message. then, in order to still retrieve that message, I would find the first occurence of the NUL char in my "truncated" message, read & store additional characters one at a time until I reached ETX, and append them to my "truncated" messages, confirming length is ok. it works also, but I'm really thinking there's something I could do better, like checking if the total number of characters I need are available in the buffer before reading it, but can't find the right way to do it... any idea / pointer ? thanks !

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• Bit manipulation, permutate bits

  - by triktae

  Hi. I am trying to make a loop that loops through all different integers where exactly 10 of the last 40 bits are set high, the rest set low. The reason is that I have a map with 40 different values, and I want to sum all different ways ten of these values can be multiplied. (This is just out of curiosity, so it's really the "bitmanip"-loop that is of interest, not the sum as such.) If I were to do this with e.g. 2 out of 4 bits, it would be easy to set all manually, 0011 = 7, 0101 = 5, 1001 = 9, 0110 = 6, 1010 = 10, 1100 = 12, but with 10 out of 40 I can't seem to find a method to generate these effectively. I tried, starting with 1023 ( = 1111111111 in binary), finding a good way to manipulate this, but with no success. I've been trying to do this in C++, but it's really the general method(if any) that is of interest. I did some googling, but with little success, if anyone has a good link, that would of course be appreciated too. :)

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• Xpages conditional validation: make a field required only if report is being submitted as final

  - by Randal Oulton

  Doing server-side Xpages conditional validation.... I want the follow validation to kick in only if the Report.Status field = 'Final'. (The users are allowed to submit the report as draft and come back and finish it later, when they submit as draft we don't want to make the fields required.) How would I go about this? <xp:inputTextarea style="width:75%" value="#{Report.Agenda}" id="Agenda"> <xp:this.validators> <xp:validateRequired message="Question 1 can't be blank"> </xp:validateRequired><!-- (1) --> </xp:this.validators> </xp:inputTextarea> Tried this, didn't work, was still required even if Status field not set to final :{ <xp:inputTextarea style="width:75%" value="#{Report.Agenda}" id="Agenda" defaultValue="5 year agenda"> <xp:this.validators> <xp:validateRequired message="Question 1 can't be blank"></xp:validateRequired><!-- (1) --> <xp:validateExpression message="Question 1 can't be blank"> <xp:this.expression><![CDATA[#{javascript: if (Report.getItemValueString('Status')!='Final') { return true; } else { return false; } }]]></xp:this.expression> </xp:validateExpression> </xp:this.validators> </xp:inputTextarea>

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• Excel Automation From .NET - creating a new worksheet

  - by Andrew Shepherd

  I am attempting what seems like a simple task: using C# to create a new Excel document containing new worksheets. For some reason, I am getting a strange COM error (0x800A03EC) Has anyone managed to get this to work? Does anyone have suggestions as to how to troubleshoot this? I've isolated this into the minimum amount of code: using Microsoft.Office.Interop.Excel; using System.Diagnostics; namespace ExcelAutomation { public static class ExcelTests { public static void CreateWorksheet() { try { var app = new Microsoft.Office.Interop.Excel.Application(); app.Visible = true; var workBooks = app.Workbooks; var newWorkbook = app.Workbooks.Add(XlWBATemplate.xlWBATWorksheet); Worksheet existingWorksheet = (Worksheet)newWorkbook.Sheets[1]; Worksheet workSheet = (Worksheet)newWorkbook.Sheets.Add ( null, // before existingWorksheet, null, // 1, null //XlSheetType.xlWorksheet ); } catch (System.Runtime.InteropServices.COMException ex) { Trace.WriteLine(string.Format("Caught COMException. Message: \"{0}\"", ex.Message)); } } } } The output window now says: Caught COMException. Message: "Exception from HRESULT: 0x800A03EC"

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• NHybernate, the Parallel Framework, and SQL Server

  - by andy

  hey guys, we have a loop that: 1.Loops over several thousand xml files. Altogether we're parsing millions of "user" nodes. 2.In each iteration we parse a "user" xml, do custom deserialization 3.finally, in each iteration, we send our object to nhibernate for saving. We use: .SaveOrUpdateAndFlush(user); This is a lengthy process, and we thought it would be a perfect candidate for testing out the .NET 4.0 Parallel libraries. So we wrapped the loop in a: Parallel.ForEach(); After doing this, we start getting "random" Timeout Exceptions from SQL Server, and finally, after leaving it running all night, OutOfMemory unhandled exceptions. I haven't done deep debugging on this yet, but what do you guys think. Is this simply a limitation of SQL Server, or could it be our NHibernate setup, or what? cheers andy

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• how to specify open id realm in openid4java 0.9.5

  - by Salvin Francis

  my url @ development : http://192.168.0.1:8888/com.company.MyEntryPoint/MyEntrypoint.html my url @ live env : http://www.example.com/com.company.MyEntryPoint/MyEntrypoint.html I need users to authenticate using open id, this is how i want my realm to be: *.company.MyEntryPoint I wrote a simple code to specify realm: AuthRequest authReq = manager.authenticate( discovered, returnToUrl, "*.company.MyEntryPoint" ); it does not work. Exception: org.openid4java.message.MessageException: 0x301: Realm verification failed (2) for: *.company.MyEntryPoint at org.openid4java.message.AuthRequest.validate(AuthRequest.java:354) at org.openid4java.message.AuthRequest.createAuthRequest(AuthRequest.java:101) at org.openid4java.consumer.ConsumerManager.authenticate(ConsumerManager.java:1073) Of all the combinations I tried, curiously, the following worked: AuthRequest authReq = manager.authenticate( discovered, returnToUrl, "http://localhost:8888/com.capgent.MyEntryPoint" ); This does not solves my issue but rather complicates it :) According to google and open id spec it should have worked complete code snippet: List discoveries = manager.discover(clientUrl); DiscoveryInformation discovered = manager.associate(discoveries); AuthRequest authReq = manager.authenticate(discovered, returnToUrl,"*.company.MyEntryPoint"); FetchRequest fetch = FetchRequest.createFetchRequest(); fetch.addAttribute("email", "http://schema.openid.net/contact/email", true); fetch.addAttribute("country", "http://axschema.org/contact/country/home", true); fetch.addAttribute("firstname", "http://axschema.org/namePerson/first", true); fetch.addAttribute("lastname", "http://axschema.org/namePerson/last", true); fetch.addAttribute("language", "http://axschema.org/pref/language", true); authReq.addExtension(fetch); String returnStr; if (!discovered.isVersion2()) { returnStr = authReq.getDestinationUrl(true); } else { returnStr = authReq.getDestinationUrl(false); } What am I doing wrong over here ?

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• How to "kill" background worker completely?

  - by Ken Hung

  Hi All, I am writing a windows application that runs a sequence of digital IO actions repeatedly. This sequence of actions starts when the user click a "START" button, and it is done by a background worker in backgroundWorker1_DoWork(). However, there are occasions when I get the "This backgroundworker is currently busy......." error message. I am thinking of implementing the following in the code, by using a while loop to "kill" the background worker before starting another sequence of action: if (backgroundWorker1.IsBusy == true) { backgroundWorker1.CancelAsync(); while (backgroundWorker1.IsBusy == true) { backgroundWorker1.CancelAsync(); } backgroundWorker1.Dispose(); } backgroundWorker1.RunWorkerAsync(); I think my main concern is, will the backgroundWorker1 be "killed" eventually? If it will, will it take a long time to complete it? Will this coding get me into an infinite loop?

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• Streaming files from EventMachine handler?

  - by Noah

  I am creating a streaming eventmachine server. I'm concerned about avoiding blocking IO or doing anything else to muck up the event loop. From what I've read, ruby's non-blocking IO can be used to stream files in a non-blocking way, or I can call next_tick, but I'm a little unclear about which of these approaches is preferable. Part of the problem is that I have not found a good explanation of non-blocking IO library functions in ruby. Short version: Assuming a long-lived network IO operation, several wall clock minutes of streaming per file, transfer, what is the best way to do this in eventmachine without gumming up the event loop? while 1 do file.read do |bytes| @conn.send_data bytes end end I understand that the above code will block and I'm wondering what to put in its place. Also, I cannot use the FileStreamer class that is part of eventmachine as is, because I need to manipulate the data after it's read but before it's sent. Thanks, Noah

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• effective retrieve for a voting system in PHP

  - by Adnan

  Hello, I have a system where registered users can vote up/vote down comment for a picture. Something very similar to SO's voting system. I store the votes in a table with values as such; vote_id | vote_comment_id | vote_user_id | vote_date Now I have few a question concerned the speed and efficiency for the following; PROB: Once a user opens the picture page with comments I need, if that user has already voted UP/DOWN a comment to show it like; "you voted up" or "you voted down" next to the comment (in SO it the vote image is highlighted) MY POSSIBLE SOL: Right now when I open a picture page for each comment I loop thru, I loop thru my table of votes as well and check if a user has voted and show the status (I compare the vote_user_id with the user's session). How efficient is this? Anyone have a better approach to tackle this kind of problem?

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• How to program a real-time accurate audio sequencer on the iphone?

  - by Walchy

  Hi... I want to program a simple audio sequencer on the iphone but I can't get accurate timing. The last days I tried all possible audio techniques on the iphone, starting from AudioServicesPlaySystemSound and AVAudioPlayer and OpenAL to AudioQueues. In my last attempt I tried the CocosDenshion sound engine which uses openAL and allows to load sounds into multiple buffers and then play them whenever needed. Here is the basic code: init: int channelGroups[1]; channelGroups[0] = 8; soundEngine = [[CDSoundEngine alloc] init:channelGroups channelGroupTotal:1]; int i=0; for(NSString *soundName in [NSArray arrayWithObjects:@"base1", @"snare1", @"hihat1", @"dit", @"snare", nil]) { [soundEngine loadBuffer:i fileName:soundName fileType:@"wav"]; i++; } [NSTimer scheduledTimerWithTimeInterval:0.14 target:self selector:@selector(drumLoop:) userInfo:nil repeats:YES]; In the initialisation I create the sound engine, load some sounds to different buffers and then establish the sequencer loop with NSTimer. audio loop: - (void)drumLoop:(NSTimer *)timer { for(int track=0; track<4; track++) { unsigned char note=pattern[track][step]; if(note) [soundEngine playSound:note-1 channelGroupId:0 pitch:1.0f pan:.5 gain:1.0 loop:NO]; } if(++step>=16) step=0; } Thats it and it works as it should BUT the timing is shaky and instable. As soon as something else happens (i.g. drawing in a view) it goes out of sync. As I understand the sound engine and openAL the buffers are loaded (in the init code) and then are ready to start immediately with alSourcePlay(source); - so the problem may be with NSTimer? Now there are dozens of sound sequencer apps in the appstore and they have accurate timing. I.g. "idrum" has a perfect stable beat even in 180 bpm when zooming and drawing is done. So there must be a solution. Does anybody has any idea? Thanks for any help in advance! Best regards, Walchy

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• convert password encryption from java to php

  - by Obay

  I'm trying to create a PHP version of an existing JSP program, however I'm stuck at the password encryption part. Could you please tell me how to convert this one? I know it tries to get the md5() but after that, I don't get it. I get lost in the Stringbuffer and for() parts. Can you help me out? public static String encryptPassword( String password ) { String encrypted = ""; try { MessageDigest digest = MessageDigest.getInstance( "MD5" ); byte[] passwordBytes = password.getBytes( ); digest.reset( ); digest.update( passwordBytes ); byte[] message = digest.digest( ); StringBuffer hexString = new StringBuffer(); for ( int i=0; i < message.length; i++) { hexString.append( Integer.toHexString( 0xFF & message[ i ] ) ); } encrypted = hexString.toString(); } catch( Exception e ) { } return encrypted; }

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• Looping through JSON arrays

  - by George

  I'm trying to pull the field names in the header of some JSON output. The following is a sample of the JSON header info: {"HEADER":{"company":{"label":"Company Name"},"streetaddress":{"label":"Street Address"},"ceo":{"label":"CEO Name","fields":{"firstname":{"label":"First Name"},"lastname":{"label":"Last Name"}}} I'm able to loop through the header and output the field and label (i.e. company and Company Name) using the following code: obj = JSON.parse(jsonResponse); for (var key in obj.HEADER) { response.write ( obj.HEADER[key].label ); response.write ( key ); } but can't figure out how to loop through and output the sub array of fields (i.e. firstname and First Name). Any ideas?

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• Concatenation with Zero is not occurring properly in code?

  - by Vineet

  I was trying to reverse a number in PL/SQL. It's working fine, but when my number contains any 0, the output is unexpected. For example: 1234 output 4321 1000 output 1 1203 ouput 3021 10001 output 1 DECLARE r number(9); num number(9):=&p_num; BEGIN WHILE num>=1 LOOP IF mod(num,10)=0 THEN -- extracting last digit of a number . r:=r||0; --if end digit is 0 then concat r with 0 ELSE r:=r||mod(num,10);--if mod is not 0 then it would be last digit. END IF; num:=trunc(num/10);--Removing last digit from number END LOOP; dbms_output.put_line(r); END;

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• VB listbox cannot be indexed because it has no default value

  - by Shane Fagan

  I have a listbox and I want to loop through each of the items to see if the string im looking for is inside. I know I could do .contains but that wouldnt look at substrings. The code im using looks like this: While tempInt > Listbox.items.count then if searchString.contains(listbox(tempInt)) then end if tempInt+=1 end while Everything in the loop is fine but VB gives an error on the listbox(tempInt) part. The error is "class windows.forms.listbox cannot be indexed because it has no default value". Can anyone help get around the default value crap? I tried putting in a blank string but no change.

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• Trying to drop all tables from my schema with no rows?

  - by Vineet

  I am trying to drop all tables in schema with no rows,but when i am executing this code i am getting an error THis is the code: create or replace procedure tester IS v_count NUMBER; CURSOR emp_cur IS select table_name from user_tables; BEGIN FOR emp_rec_cur IN emp_cur LOOP EXECUTE IMMEDIATE 'select count(*) from '|| emp_rec_cur.table_name INTO v_count ; IF v_count =0 THEN EXECUTE IMMEDIATE 'DROP TABLE '|| emp_rec_cur.table_name; END IF; END LOOP; END tester; ERROR at line 1: ORA-29913: error in executing ODCIEXTTABLEOPEN callout ORA-29400: data cartridge error KUP-00554: error encountered while parsing access parameters KUP-01005: syntax error: found "identifier": expecting one of: "badfile, byteordermark, characterset, data, delimited, discardfile, exit, fields, fixed, load, logfile, nodiscardfile, nobadfile, nologfile, date_cache, processing, readsize, string, skip, variable" KUP-01008: the bad identifier was: DELIMETED KUP-01007: at line 1 column 9 ORA-06512: at "SYS.ORACLE_LOADER", line 14 ORA-06512: at line 1 ORA-06512: at "SCOTT.TESTER", line 9 ORA-06512: at line 1

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• GMail appearing to ignore Reply-To.

  - by Samuurai

  I'm using a gmail account to send emails from my website. I'm using the same account to pick up emails which are generated by the contact facility on my site. I'm using the Reply-To field to attempt to make it easier to hit reply and easily get back to people. The message comes up with the 'from' address and ignores the 'reply-to' address. Here's my header: Return-Path: <[email protected]> Received: from svr1 (ec2-79-125-266-266.eu-west-1.compute.amazonaws.com [79.125.266.266]) by mx.google.com with ESMTPS id u14sm23273123gvf.17.2010.03.10.14.33.24 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 10 Mar 2010 14:33:25 -0800 (PST) Received: from localhost ([127.0.0.1] helo=www.rds.com) by aquacouture with esmtp (Exim 4.69) (envelope-from <[email protected]>) id 1NpUSx-0001dK-JM for [email protected]; Wed, 10 Mar 2010 22:33:23 +0000 User-Agent: CodeIgniter Date: Wed, 10 Mar 2010 22:33:23 +0000 From: "New Inquiry" <[email protected]> Reply-To: "Beren" <[email protected]> To: [email protected] Subject: =?utf-8?Q?Test?= X-Sender: [email protected] X-Mailer: CodeIgniter X-Priority: 3 (Normal) Message-ID: <[email protected]> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="B_ALT_4b981e3390ccd" This is a multi-part message in MIME format. Your email application may not support this format. --B_ALT_4b981e3390ccd Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit test --B_ALT_4b981e3390ccd Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable test --B_ALT_4b981e3390ccd--

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• How to create templates in JSTL JSP

  - by desau

  Say I have a JSP page with JSTL. I'm using c:forEach and looping over 5 different sets of objects, each very similar. Each loop is nearly identical.. lots of duplicated code. I'd like to make that loop a template -- such as a JSP template, but I want to pass the JSTL object(s) in the parameters. How can I do this? Or a more general question -- how can I create reusable HTML templates in JSP/JSTL?

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• SharpSSH gets stuck in an infinite stream read in C# SSH app

  - by Ric Coles

  Afternoon all, I'm having a small problem with the SharpSSH library for .Net (see http://www.tamirgal.com/blog/page/SharpSSH.aspx) SshStream ssh = new SshStream("some ip address", "some username", "some password"); ssh.Prompt = "\n"; ssh.RemoveTerminalEmulationCharacters = true; ssh.Write("ssh some ip address"); // Don't care about this response ssh.ReadResponse(); ssh.Write("lss /mnt/sata[1-4]"); // Don't care about this response (for now) ssh.ReadResponse(); // while the stream can be read while (ssh.CanRead) { Console.WriteLine(ssh.ReadResponse()); } ssh.Close(); As you can see, it's fairly straight forward. However, when the while-loop gets stepped into, it won't break out of the loop when everything has been printed to the console and there is nothing else to read. Is there anyway I can manually force it to break when there is nothing else to be read? Cheers, Ric

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• How do i refactor this code by using Action<t> or Func<t> delegates

  - by user330612

  I have a sample program, which needs to execute 3 methods in a particular order. And after executing each method, should do error handling. Now i did this in a normal fashion, w/o using delegates like this. class Program { public static void Main() { MyTest(); } private static bool MyTest() { bool result = true; int m = 2; int temp = 0; try { temp = Function1(m); } catch (Exception e) { Console.WriteLine("Caught exception for function1" + e.Message); result = false; } try { Function2(temp); } catch (Exception e) { Console.WriteLine("Caught exception for function2" + e.Message); result = false; } try { Function3(temp); } catch (Exception e) { Console.WriteLine("Caught exception for function3" + e.Message); result = false; } return result; } public static int Function1(int x) { Console.WriteLine("Sum is calculated"); return x + x; } public static int Function2(int x) { Console.WriteLine("Difference is calculated "); return (x - x); } public static int Function3(int x) { return x * x; } } As you can see, this code looks ugly w/ so many try catch loops, which are all doing the same thing...so i decided that i can use delegates to refactor this code so that Try Catch can be all shoved into one method so that it looks neat. I was looking at some examples online and couldnt figure our if i shud use Action or Func delegates for this. Both look similar but im unable to get a clear idea how to implement this. Any help is gr8ly appreciated. I'm using .NET 4.0, so im allowed to use anonymous methods n lambda expressions also for this Thanks

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• Create Oracle Cursor

  - by Mohammad

  Hi, I create a cursor like this: SQL> CREATE OR REPLACE PROCEDURE Update_STUD_FinAid ( AIDY_CODE IN VARCHAR2 ) IS 2 CURSOR PublicationC IS 3 SELECT SGBSTDN_USER_ID from SGBSTDN 4 WHERE SGBSTDN_TERM_CODE_EFF ='201030'; 5 BEGIN 6 close PublicationC; 7 8 OPEN PublicationC; 9 10 FOR PublicationR IN PublicationC 11 LOOP 12 DBMS_OUTPUT.PUT_LINE( PublicationR.SGBSTDN_USER_ID ); 13 END LOOP; 14 15 close PublicationC; 16 17 END; 18 / Procedure created. And then when I run the Procedure then I get this error: ERROR at line 1: ORA-06512: at line 2 Please advise. Thanks

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• Understanding byte order and functions like CFSwapInt32HostToBig

  - by Typeoneerror

  I've got an enumeration in my game. A simple string message with an appended PacketType is being sent with the message (so it knows what to do with the message) over GameKit WIFI connection. I used Apple's GKRocket sample code as a starting point. The code itself is working fantastically; I just want to understand what the line with CFSwapInt32HostToBig is doing. What on earth does that do? and why does it need to do it? My guess is that it's making sure the PacketType value can be converted to an unsigned integer so it can send it reliably, but that doesn't sound all that correct to me. The documentation states "Converts a 32-bit integer from big-endian format to the host’s native byte order." but I don't understand what the means really. typedef enum { PacketTypeStart, // packet to notify games to start PacketTypeRequestSetup, // server wants client info PacketTypeSetup, // send client info to server PacketTypeSetupComplete, // round trip made for completion PacketTypeTurn, // packet to notify game that a turn is up PacketTypeRoll, // packet to send roll to players PacketTypeEnd // packet to end game } PacketType; // .... - (void)sendPacket:(NSData *)data ofType:(PacketType)type { NSLog(@"sendPacket:ofType(%d)", type); // create the data with enough space for a uint NSMutableData *newPacket = [NSMutableData dataWithCapacity:([data length]+sizeof(uint32_t))]; // Data is prefixed with the PacketType so the peer knows what to do with it. uint32_t swappedType = CFSwapInt32HostToBig((uint32_t)type); // add uint to data [newPacket appendBytes:&swappedType length:sizeof(uint32_t)]; // add the rest of the data [newPacket appendData:data]; // Send data checking for success or failure NSError *error; BOOL didSend = [_gkSession sendDataToAllPeers:newPacket withDataMode:GKSendDataReliable error:&error]; if (!didSend) { NSLog(@"error in sendDataToPeers: %@", [error localizedDescription]); } }

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• Default value list for pipeline param in Powershell

  - by fatcat1111

  I have a Powershell script that reads values off of the pipeline: PARAM ( [Parameter(ValueFromPipeline = $true)] $s ) PROCESS { echo "* $s" } Works just fine: PS my.ps1 foo * foo I would like the script to have list of default values, as the most common usage will always use the same values and storing them in the default will be most convenient. I did the usual assignment: PARAM ( [Parameter(ValueFromPipeline = $true)] $s = 'bar' ) PROCESS { echo "* $s" } Again, works just fine: PS my.ps1 * bar PS my.ps1 foo * foo However when setting the default to be a list, I get back something entirely reasonable but not at all what I want: PARAM ( [Parameter(ValueFromPipeline = $true)] $s = @('bar', 'bat', 'boy') ) PROCESS { echo "* $s" } Result: PS my.ps1 * bar bat boy I expected: PS my.ps1 * bar * bat * boy How can I get one call in to the Process loop for each default value? (This is somewhat different than getting one call in to Process, and wrapping the current body of in a big foreach loop over $s).

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