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• How to identify/handle text file newlines in Java?

  - by rafrafUk

  Hi Everyone! I get files in different formats coming from different systems that I need to import into our database. Part of the import process it to check the line length to make sure the format is correct. We seem to be having issues with files coming from UNIX systems where one character is added. I suspect this is due to the return carriage being encoded differently on UNIX and windows platform. Is there a way to detect on which file system a file was created, other than checking the last character on the line? Or maybe a way of reading the files as text and not binary which I suspect is the issue? Thanks Guys !

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• Object initialization sequence in Objective-C

  - by Alex

  Hello everyone. The Cocoa framework has a convention to always call self = [super init] in the init method of an inherited class, because [super init] may return a new instance. What will happen if I do this? @interface MyClass : NSObject /* or any other class */ { int ivar_; } @end @implementation MyClass - (id)init { ivar_ = 12345; if ((self = [super init])) { NSLog(@"ivar_'s value is %d", ivar_); } return self; } @end In the case when [super init] returns a new instance, what will I see in the console? ivar_'s value is 0? I can't think of a way to check this myself, because I don't know which class may return a new instance from its init method. Also, can't seem to find explicit clarification for this scenario in the docs. Could anyone help me out? Thanks!

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• What magical thing could be killing my Drupal session and anywhere from 15-45 minutes of activity?

  - by jini

  I am using a standard Drupal install hosted on a LAMP stack. My settings.php has the following set: ini_set('session.gc_probability', 1); ini_set('session.gc_divisor', 100); ini_set('session.gc_maxlifetime', 200000); ini_set('session.cookie_lifetime', 2000000); my php.ini file has: session.gc_probability = 1 session.gc_divisor = 1000 session.gc_maxlifetime = 1440 Also I have checked that the safe mode is off so that my settings.php file is able to override main php.ini variables. Also since the person can get log out at 15 minutes, it is making me wonder whether php.ini has anything to do with it anyways. I have combed through my code and it seems to work fine on my local host however on server it is having issues. Where else can i possibly check?????

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• How can I refresh a page via jQuery and ensure that there's a connection?

  - by Steve

  Hi! I toyed around with .load() and .ajax(), but i didn't get to an end. Here's what I need: Everey minute the function shall check if it can load a certain page. if the connection succeeds, I want the page to be refreshed, if not, nothing shall happen, the script shall retry later. I'm using the jQueryTimers plugin. this is my code so far: //reload trigger $(document).everyTime('60s', 'pagerefresh', reloadPage, 0, true); //refresh function function reloadPage() { $.ajax({ url:'index-1.php', type:'HEAD', success: location.reload(true) }) } I have no idea how to tell jQ what I want. any hint appreciated.

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• Log4Perl - how to set exit code if any WARN, ERROR, or FATAL messages?

  - by pdxrlk

  Hi - I've been using Log4Perl extensively in a number of scripts. I'd like to augment those scripts to set an error code if any WARN or ERROR messages have been logged. I couldn't find any obvious way to do this based on existing documentation. I'd like to avoid a brute-force rewrite of my existing scripts to add a check on every WARN or ERROR log message; I'd prefer to handle it prior to script exit if possible like this pseudocode: if $log->has_warnings_or_errors then exit 1 else exit 0 Is there any easy way to call Log4Perl to determine if the current logger has issues messages of certain levels? Thanks.

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• Java PreparedStatement Throws MySQLSyntaxErrorException

  - by sqlBugs

  I have the following Java code: String query = "Select 1 from myTable where name = ? and age = ?"; PreparedStatement stmt = conn.prepareStatement(query); stmt.setString(1, name); stmt.setInt(2, age); ResultSet rs = stmt.executeQuery(); Whenever I run the above code, it throws an exception on line 2 (where the PreparedStatement is declared): Error 0221202: SQLException = com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? AND age = ?' at line 1 Does anyone have any suggestions about what I am doing wrong? Thanks!

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• .net c# datagridview populating with non database data/setup

  - by flavour404

  Hi, I have never used the datagridview in any other scenario other than one where it is populating by a database so suddenly my mind goes blank... I have 10 tubes, each with 8 vertical positions within it, so I have a 10 by 8 grid basically. Each has of those slots has (or not) an image in a folder. How do I get a datagridview to reflect this information, draw a grid, check the folder and if the image exists paint it white, and if not paint it red? Sorry it if sounds a little odd, thanks, R.

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• Jquery Match() IP Address?

  - by user1635970

  I'm using a jquery script to validate form fields. This works well, but I'd like to change the validation of one field to check for IP Addresses. The regex I want to use is : \b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b How do I amend the below to work with this ? (This is how the validation works for email address) jQuery("#Email").validate({ expression: "if (VAL.match(/^[^\\W][a-zA-Z0-9\\_\\-\\.]+([a-zA-Z0-9\\_\\-\\.]+)*\\@[a-zA-Z0-9_]+(\\.[a-zA-Z0-9_]+)*\\.[a-zA-Z]{2,4}$/)) return true; else return false;", message: "Should be a valid Email id" });

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• XBox 360 Dashboard Plugins

  - by ChoccyButton

  Is it possible to create plug ins for the Xbox 360 dashboard? I was looking to turn the 360 into the hub for the family. So you could for example turn the xbox on, and there on the dashboard see all the families calendars merged, todo lists, grocery lists, birthdays etc. I can't see anybody talking about plugins for the dashboard around the net so I'm guessing you can't, but thought I'd check. Next option will be something like a net top running in the family room, but that means 2 devices then, one for gaming and one for the family functions

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• C# windows application, how to save & restore positions of child forms.

  - by Manish Gupta

  I have a windows application with an MDI form and some child forms. I need to save the position of the child forms and then restore when it is opened again. How to do that in C#? Also, I need to check if the child form's title bar is not hidden under the mdi form (e.g title bar might get hidden because of mdi form's menus). If this is the case, then I need to set the position smartly. Thanks in advance...

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• Android-USB Connectivity

  - by neoHacker

  Hi all, I'm in the middle of an android app that need to check whether the device is connected to another system or pendrive through usb and if it is connected i need to send a copy of my database file through usb port. This sis for backing up my database. I have no idea how to prompt for usb connections. I searched the net. But no results!.Can anyone please help. Because i'm stuck here at my project. Thanks in advance.

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• user_objects oracle

  - by mysticfalls

  I would just like to ask what is the difference between user_constraints and user_objects. I have this two database. I run a script on both DB that resulted a unique constraint error. To solve the problem I delete the constraint on user_constraint table for both DB. After that DB1 run without error.. DB2 however failed, I checked the user_constraint for both db and the constraints was deleted. I was asked to check the user_objects.. and found that DB2 has that same constraint_name as the object_name in user_objects table.. Any info regarding their relationship, use, similarites, etc will be appreciated ... Thanks..

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• Office Application in Silverlight 4

  - by gery128

  Hi All, I am currently working on automation of Office 2007 application, which is in windows forms .NET 2.0 with Office Interop library. I would like to know, if can I use Silverlight 4 to make it web application and give users a full-fledged web-page where they can edit the document/excel sheet/presentation ? Also, would I be able to access Object Model just like I do in Windows Application? Because I want to check what changes have been done. Kindly suggest me the right path for this.

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• Java LinkedList iterator being exhausted prematurely

  - by Sujeet

  I am using LinkedList and retrieving an Iterator object by using list.iterator(). After that, I am checking it.hasNext(), real issue is while checking it.hasNext(), sometimes it returns false. I need help why this is happening, though I have elements in the list. Some code: public synchronized void check(Object obj) throws Exception { Iterator itr = list.iterator(); while(itr.hasNext()) { //This Line I get false.. though i have list size is 1 Item p = (Item)itr.next(); if(p.getId() == null) {continue;} if(p.getId().getElemntId() == obj.getId() || obj.getId() == 0 ) { p.setResponse(obj); notifyAll(); return; } } Log.Error("validate failed obj.getId="+obj.getId()+" **list.size="+list.size()*This shows 1*); throw new Exception("InvalidData"); }

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• Using sizeof with a dynamically allocated array

  - by robUK

  Hello, gcc 4.4.1 c89 I have the following code snippet: #include <stdlib.h> #include <stdio.h> char *buffer = malloc(10240); /* Check for memory error */ if(!buffer) { fprintf(stderr, "Memory error\n"); return 1; } printf("sizeof(buffer) [ %d ]\n", sizeof(buffer)); However, the sizeof(buffer) always prints 4. I know that a char* is only 4 bytes. However, I have allocated the memory for 10kb. So shouldn't the size be 10240? I am wondering am I thinking right here? Many thanks for any suggestions,

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• How to read and loop through each rows in an Excel using C#

  - by Ullan

  I need to read an excel file and loop through the rows. I used the below code to read the excel file. But I am not getting the entire row, inseatd of getting the column values. try { OleDbConnection objConnection = new OleDbConnection(strConnectionString); string queryString = string.Format("Select * from [{0}$]", strSheetName, objConnection); OleDbCommand command = new OleDbCommand(queryString, objConnection); objConnection.Open(); OleDbDataReader reader = command.ExecuteReader(); while (reader.Read()) { var val1 = reader[0].ToString(); //Here I want to get each row } reader.Close(); } catch (Exception ex) { Console.WriteLine(ex.Message); } I need to check if the row is empty or not, if not empty, I need to serach for some values in a particular column. Thanks for your help

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• Why is Zend Framework (Zend_Db_table) rejecting this SQL Query?

  - by Michael T. Smith

  I'm working on a simple JOIN of two tables (urls and companies). I am using this query call: print $this->_db->select()->from(array('u' => 'urls'), array('id', 'url', 'company_id')) ->join(array('c' => 'companies'), 'u.company_id = c.id'); which is out putting this query: SELECT `u`.`id`, `u`.`url`, `u`.`company_id`, `c`.* FROM `urls` AS `u` INNER JOIN `companies` AS `c` ON u.company_id = c.id Now, I'd prefer the c.* to not actually appear, but either way it doesn't matter. ZF dies with this error: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1" but I can run that query perfectly fine in my MySQL CLI. Any ideas how to fix up this query?

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• Password Hash Implementation

  - by oyerli

  I am developing a new application using Symfony. I want to store the passwords hashed, so I overridded the save method in my User model: public function save(Doctrine_Connection $conn = null) { $this->setUserPassword( md5($this->getUserPassword()) ); return parent::save($conn); } This works good when a new user created. However, this causes problems when we edit a user without changing his password. This causes Doctrine to hash the already hashed password. So, I need to check that whether the UserPassword is modified in this DoctrineRecord instance. How can I manage to do that?

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• how to find and add a string to a file in linux

  - by user2951644

  How can I check a file for a string if missing the string automatically add it for example Input Input file test.txt this is a test text for testing purpose this is a test for testing purpose this is a test for testing purpose this is a test text for testing purpose I would like to add "text" to all the lines Desired Output this is a test text for testing purpose this is a test text for testing purpose this is a test text for testing purpose this is a test text for testing purpose Is it possible? many thanks in advance Hi guys thanks for all the help, for my case is not that simple. I wont know which line will be different and in the middle string it will not only have a single string. i will give a clearer case Input file test.txt Group: IT_DEPT,VIP Role: Viewer Dept: IT Group: IT_DEPT,VIP Dept: IT Group: FINANCE LOAN VIEWER Role: Viewer Dept: FINANCE Group: FINANCE LOAN VIEWER Dept: FINANCE Desired output file test2.txt Group: IT_DEPT,VIP Role: Viewer Dept: IT Group: IT_DEPT,VIP Role: - Dept: IT Group: FINANCE LOAN VIEWER Role: Viewer Dept: FINANCE Group: FINANCE LOAN VIEWER Role: - Dept: FINANCE So those that are missing "Role:" will be added "Role: - ", hope this clear things out, thanks in advance again

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• Compare images to find differences

  - by _simon_

  Task: I have a camera mounted on the end of our assembly line, which captures images of produced items. Let's for example say, that we produce tickets (with some text and pictures on them). So every produced ticket is photographed and saved to disk as image. Now I would like to check these saved images for anomalies (i.e. compare them to an image (a template), which is OK). So if there is a problem with a ticket on our assembly line (missing picture, a stain,...), my application should find it (because its image differs too much from my template). Question: What is the easiest way to compare pictures and find differences between them? Do I need to write my own methods, or can I use existing ones? It would be great if I just set a tolerance value (i.e. images can differ for 1%), put both images in a function and get a return value of true or false :) Tools: C# or VB.NET, Emgu.CV (.NET wrapper for OpenCV) or something similar

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• question related to Iphone autorelease usage

  - by user524331

  Could someone help me please understand how allocation and memory management is done and handled in following scenario. i am giving a Psuedo code example and question thats troubling me is inline below: interface first { NSDecimalNumber *number1; } implementation ..... -(void) dealloc { [number1 release]; [super dealloc]; } ================================= interface second { NSDecimalNumber *number2; } implementation second ..... - (First*) check { First *firstObject = [[[First alloc] init] autorelease]; number1 = [[NSDecimalNumber alloc] initWithInteger:0]; **// do i need to autorelease number1 as well?** return firstObject; }

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• Android Login - Best implementation

  - by perdian

  Hi everybody, I'm planning to implement an Android application that requires a login screen. If the user opens the activity something like this should happen: If user is logged in, goto 3 If user is not logged in open the login screen and perfom login Show my application content So, what's the "correct" way of implementing a login? Implement a StartActivity that perfoms the check if the user is logged in, implement a LoginActivity that implements the logging and an ApplicationActivity that actually implements the application logics? Implement just one Activity and handle the login by using multiple views which I show according to the application state? Are there any examples or tutorials for this scenario?

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• C++ stringstream reads all zero's

  - by user69514

  I have a file which contains three integers per line. When I read the line I use a stringstream to separate the values, but it only reads the first value as it is. The other two are read as zero's. ifstream inputstream(filename.c_str()); if( inputstream.is_open() ){ string line; stringstream ss; while( getline(inputstream, line) ){ //check line and extract elements int id; double income; int members; ss.clear(); ss.str(line); ss >> id >> income >> members; In the case above, id is extracted correctly, but income, and members get assigned zero instead of the actual value.

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• Removing “duplicate objects” with same attributes using Array.map

  - by keruilin

  As you can see in the current code below, I am finding the duplicate based on the attribute recordable_id. What I need to do is find the duplicate based on four matching attributes: user_id, recordable_type, hero_type, recordable_id. How must I modify the code? heroes = User.heroes for hero in heroes hero_statuses = hero.hero_statuses seen = [] hero_statuses.sort! {|a,b| a.created_at <=> b.created_at } # sort by created_at hero_statuses.each do |hero_status| if seen.map(&:recordable_id).include? hero_status.recordable_id # check if the id has been seen already hero_status.revoke else seen << hero_status # if not, add it to the seen array end end end

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• Getting the dynamic value of a checkbox in repeating region loop with Jquery

  - by John

  How do I get the values of a check box that is in a repeating region with its values dynamically generated from a recordset from the database.I want to retrieve the value when it is checked and after I click on a link.The problem is that it is retrieving only the first value of the recordset which is 1.This is the code: //jQuery $(document).ready(function(){ $("#clickbtn").click(function(){ $("input[type=checkbox][checked]").each(function(){ var value=$("#checkid").attr('value'); $("#textfield").attr('value',value); }); return false; }); }); //html <td width="22"><form id="form1" name="form1" method="post" action=""> <input type="checkbox" name="checkid" id="checkid" value="<?php echo $row_people['NameID']; ?>" /> </form></td> I would appreciate the help.

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