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• Get machine name for remote computer on local network

  - by durza

  Hi, I've 2 machines with names Comp1, Comp2. There is a DNS name for them, that mask them as one, let say DNSName. I get IP addresses for both machines via Dns.GetHostEntry("DNSName"). But when I try get Dns.GetHostEntry(ipAddress) entry.HostName always contains DNSName. I found some way to get name through WMI. But our policy doesn't allow WMI on remote machines. I can do parsing of nbstat -a output, but I would like to do some clean aproach to this. Is there some way?

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• Find Field In Access Table

  - by user3535895

  I need to connect to a local table in Access and find a an entry in the name field then find the id of that name. I know how to connect to access and create the connection there, but actually manipulating the table I am lost. I can use this to connect to access, but how would I access the table and find the field I am looking for? The data structure of the table I want to connect to is: name text, address text, id autonumber. System.Collections.ArrayList outside = new System.Collections.ArrayList(); System.Data.OleDb.OleDbConnection olecon = new System.Data.OleDb.OleDbConnection"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path); olecon.Open();

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• delphi finalizalization code in a DLL

  - by PA

  I am moving some functions to a shared DLL (I want to have some called as a Windows hook). The actual functions are currently in a unit, and it happens to have some initialization and some finalization code. I was initially thinking on doing a direct transformation from a unit to a library. So I moved the initialization code in between the main begin and end.. But then I realized I had no place to move the finalization code. I should create and register an special DLL entry point, instead. My question is. Can I leave the unit with all the functions and the initialization and finalization codes and just create a library stub that uses the unit? will the finalizationit be called?

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• Sending compres data via socket

  - by Pizza

  Hi, I have to make a log server in java, and one task is to send the data compressed. Now I am sending it line by line in plain text, but I must compress it. The server handle "HTTP like" request. For example, I can get a log sending "GET xxx.log". This will entablish a TCP connection to the server, the server response with a header and the log, and close the connection. The client, reads line by line and analyzes each LOG entry. I tried some ways without success. My main problem is that I don't know where each line ends(in the client size). Any idea?

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• Optimize MySQL database query

  - by rajeeesh

  I had a commenting application in my web site. The comments will store in a MySQL table . table structure as follows id | Comment | user | created_date ------------------------------------------------------ 12 | comment he | 1245 | 2012-03-30 12:15:00 ------------------------------------------------------ I need to run a query for listing all the comments after a specific time. ie .. a query like this SELECT * FROM comments WHERE created_date > "2012-03-29 12:15:00" ORDER BY created_date DESC Its working fine.. My question is if I got a 1-2 lakh entry in this table is this query is sufficient for the purpose ? or this query will take time to execute ? In most cases I have to show last 2 days data + periodically ( interval of 10 mins ) checking for updates with ajax from this table ... Please help Thanks

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• Hibernate: delete many-to-many association

  - by Bar

  I have two tables with the many-to-many association. — DB fragment: loads Id Name sessions Id Date sessionsloads LoadId SessionId — Hibernate mapping fragments: /* loads.hbm.xml */ <set name="sessions" table="sessionsloads" inverse="true"> <key column="LoadId" /> <many-to-many column="SessionId" class="Session" /> </set> … /* sessions.hbm.xml */ <set name="loads" table="sessionsloads"> <key column="SessionId" /> <many-to-many column="LoadId" class="Load" /> </set> In order to remove one entry from the association table sessionsloads, I execute this code: Session session = sessionDao.getObject(sessionId); Load load = loadDao.getObject(loadId); load.getSessions().remove(session); loadDao.saveObject(load); But, after launching, this code change nothing. What's the right way to remove an association?

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• This query show me with this active record

  - by New Kid

  I am having trouble getting two tables and passing them to controller: IN A MODEL: function get_all_entries() { $query = $this->db->get('entry'); return $query->result(); $this->db->select('entry_id , count(comment_id) as total_comment'); $this->db->group_by('entry_id'); $comment = $this->db->get('comment'); return $comment->result(); } IN A CONTROLLER: $data['query'] = $this->blog_model->get_all_entries(); $this->load->view('blog/index',$data); How do I return $query and $comment variables to controller? I think I am doing it wrong.

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• Creating Javascript function called ReadName()

  - by user228390

  Hey guys, I want to create a form which has a text entry box where a user can enter their name and then I want a button as well. But what I want this button to have a function called ReadName() where what will happen is when the user clicks on the button it will come up with a message saying "Hello user name will appear here I have tried my self and but I don't think I am not getting what I want. Any help will be appreciated. <form> <label for="name">Name:/label> <input type="text" name="name" id="name"/> <input type="text" name="name" onfocus="ReadName()"/> </form>

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• Where can I find a compact programming keyboard with logical key placement?

  - by Lefler

  I recently, at the order of my chiropractor, bought a laptop stand to elevate my screen. A result of this is that I need a standalone keyboard. Normal keyboards have numeric keypads on the right side, which moves my mouse further to the right... not an optimal position chiropractically speaking. I don't use the numeric keypad, but all the compact keyboards I can find use some random placement algorithm on the arrow, page up/down, and most importantly -- the insert,delete,home and end keys. Those misplaced keys are crippling my code entry. Does anyone know of a keyboard that is minus the keypad, but places those VERY IMPORTANT keys in a more standard position?

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• Can someone please clarify the Birthday Effect for me?

  - by Mark

  Please help interpret the Birthday effect as described in Wikipedia: A birthday attack works as follows: Pick any message m and compute h(m). Update list L. Check if h(m) is in the list L. if (h(m),m) is already in L, a colliding message pair has been found. else save the pair (h(m),m) in the list L and go back to step 1. From the birthday paradox we know that we can expect to find a matching entry, after performing about 2^(n/2) hash evaluations. Does the above mean 2^(n/2) iterations through the above entire loop (i.e. 2^(n/2) returns to step 1), OR does it mean 2^(n/2) comparisons to individual items already in L.

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• Use sudo su - <username> to access the <username's> account but sudo su - shouldn't be possible with a sudo user

  - by Winnie

  There is a requirement I got. My sudo users (for which their entry in sudoers file) should be able to access other user's account say Oracle using following command: sudo su - Oracle The above should work with giving current users password. But if the same user is firing the following command, sudo su - it shouldn't work and thus root access shouldnt be given to current user. I am not using su because because i dont want current user to know the credentials of other user(root,Oracle etc.). Can anyone please help me . Its urgent...

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• How often does memcache on Google AppEngine lose data?

  - by Freed

  Memcache in general and on AppEngine in specific is unreliable in the sense that my data may be deleted from the cache for whatever reason at any point in time. However, in some cases there might be cases where a small risk may be worth the added performance using memcache could give, such as updating some data in memcache that gets saved periodically to some other, more reliable storage. Are there any numbers from Google that could give me an indication of the actual probability that a memcache entry would be lost from the cache before its expiration time, given that I keep within my quotas? Are there any reasons other than hardware failure and administrative operations such as machines at the data centers being upgraded/moved/replaced that would cause entries to be removed from memcache prematurely?

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• display data from tables that contain a null value

  - by user2631662

  I need the code below to say - if myReader reads a null entry a new method is called. At the moment it will not display data from tables that contain a null value conDataBase.Open(); myReader = cmdDataBase.ExecuteReader(); while (myReader.Read()) { if (myReader["Code_CodeID"] != DBNull.Value) { string sFirst = myReader["First"].ToString(); string sLast = myReader["Last"].ToString(); string sAdd1 = myReader["Address1"].ToString(); string sCode = myReader["Code"].ToString(); txtFirst.Text = sFirst; txtSecond.Text = sLast; txtadd1.Text = sAdd1; txtDeviceIMEI.Text = sCode; } } } else { //go to a new method } }

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• Insert a row and avoiding race condition (PHP/MySQL)

  - by justkevin

  I'm working on a multiplayer game which has a lobby-like area where players select "sectors" to enter. The lobby gateway is powered by PHP, while actual gameplay is handled by one or more Java servers. The datastore is MySQL. The happy path: A player chooses a sector and tells the lobby he'd like to enter. The lobby checks whether this is okay, including checking whether there are too many players in the sector (compares the entry count in sector assignments for that sector against the sector's max_players value). The player is added to the sector_assignments table pairing him with the sector. The player client receives a passkey that will let him connect to the appropriate game server. The race condition: If two players request access to the same sector at close to same time, I can envision a case where they are both added because there was one space free when their check was started and max players gets exceeded. Is the best solution LOCK TABLE on sector_assignments? Is there another option?

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• How can I use Javascript to access sub-elements?

  - by Steve

  I am dynamically creating forms dynamically according to a users actions. It is an entry-box and a two "buttons" for each instance. Each instance will be wrapped in a unique div tag. What I tried to do without success is when I dynamically create the "button" I attach a function with the input variable containing the div of its instance. This a brief excerpt: var newDivClass = document.getElementById("instance"+1); button1.innerHTML = "<a href=\"#\" onclick=\"buttons("+newDivClass+");\" id=\"button1\"> Button1 </a>"; function buttons(selected) { //I want this to select the first instance //of button1 found within div newDivClass selected.getElementById("button1"); //I also tried //this.getElementById("button1"); //selected.getChildren[0]; } The problem appears to be in passing newDivClass to the the actual function.

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• Problem getting textfield.text from other view controller

  - by wesleydyson

  Hey guys, I'm trying to add a textfield.text entry to an array. I want to pull the textfield.text from a text field in another view. Here's my code. - (void)addBookmark{ MultiViewViewController *mainView = [[MultiViewViewController alloc] init]; if (mainView.addressTextField.text.length>1) { NSString *addedString = [[NSString alloc] initWithFormat:@"%@", mainView.addressTextField.text]; [bookmarksArray addObject:addedString]; NSLog(@"addBookmark being called %@", mainView.addressTextField.text); } [bmTableView reloadData]; } The NSLog says the mainView.addressTextField.text is (NULL). What am I doing wrong?

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• Sort Array in PHP

  - by DonCroce

  I have a script which gets some values from a DB. The structure of the vars is as the following: $dump["likes"] = 1234; $likes["data"][$i]["name"] = "ABCDEFG"; for($i=0;$i<=$max;$i++){ $data[$i]["likes"] = $dump["likes"]; $data[$i]["name"] = $likes["data"][$i]["name"]; } //Print Here Sorted array (highest value in "like" first) I just need a way to find out in which entry the biggest "likes" are :) So far i have tried array_multisort, but it showed me "inconsistent size" or some error... Thanks for all your help!

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• Why does using set -e cause my script to fail when called in crontab

  - by SDGuero

  I have a bash script that performs several file operations. When any user runs this script, it executes successfully and outputs a few lines of text but when I try to cron it there are problems. It seems to run (I see an entry in cron log showing it was kicked off) but nothing happens, it doesn't output anything and doesn't do any of its file operations. It also doesn't appear in the running processes anywhere so it appears to be exiting out immediately. After some troubleshooting I found that removing "set -e" resolved the issue, it now runs from the system cron without a problem. So it works, but I'd rather have set -e enabled so the script exits if there is an error. Does anyone know why "set -e" is causing my script to exit? Thanks for the help, Ryan

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• Rails 3 does not render HTML as markup

  - by suebphatt

  Hello, Stackoverflow. I submitted a form, to create single row in SQL database table, as a blog entry: <p>This is a paragraph.</p> And the result, when I query it out for display, via Rails's ActiveRecord, it rendered like this, : <p>This is a paragraph.</p> and here's the code, when I view source in browser: &lt;p&gt;This is a paragraph.&lt;/p&gt; How do I solve this? Or I just have to convert the < and > by Javascript? Thank you :)

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• What if (stage) init(); means in actionscript ?

  - by asksuperuser

  I'm creating my first as3 with flashdevelop I don't understand what the instructions mean: package { import flash.display.Sprite; import flash.events.Event; public class Main extends Sprite { public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point } } } What if (stage) init(); means ? What is Event.ADDED_TO_STAGE ? Why remove listener in init ?

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• Grabbing the right record in a drop down from mysql

  - by 86Stang

  I'm using a form where the user can edit an entry. Everything is populating and all is well with the exception that I can't get the drop down to show the project that they've already assigned the image to. $project_qry = "SELECT * from projects ORDER BY title ASC"; $project_res = mysql_query($project_qry); $project_drop = "<select name=\"project_id\">\n"; while ($row = mysql_fetch_array($project_res)) { if ($project_id == $row[title]) { $project_drop .= "<option value=\"$row[id]\" selected>$row[title]</option>\n"; } else { $project_drop .= "<option value=\"$row[id]\">$row[title]</option>\n"; } } $project_drop .= "</select>\n"; I'm sure it's something devilishly simple but I'm stumped.

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• What is the answer to this homework about maps and collections? [closed]

  - by Bishan

  Maps collection is referred to an dictionary because of the way it works. Each entry into a maps collection involves a pair of objects. In a maps collection, an object associates the key which determines where the object is stored in the map. The key object in the maps collection can be duplicated. A stack which has Last In First Out storage mechanism can be considered as a maps collection. I think #1,#2,#3 and #5 are Correct in above, but I have doubt with #5. Am I correct?

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• SQL query for selecting most recent entries

  - by Mr_Skid_Marks

  A table in my database has a column, DATE_ADDED (stored in seconds). I want to extract all rows with the most recent date (aka largest value for DATE_ADDED). The only solution I have come up with is to SELECT all the rows in ASC (ascending) order, grab the last entry from the table, check the date on this, and perform another SELECT on the table but this time only for the discovered DATE_ADDED. Is it possibly to simplify this series of queries into a single one? My thought is I should be able to do a SELECT on all of the largest values in the table, but I am struggling to come up with a proper query.

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• CertificateServicesClient-CredentialRoaming error 1005

  - by PVitt

  We have a Microsoft Team Foundation Server (Single Server Installation, i.e. Microsoft SQL Server 2008, Microsoft Windows SharePonint Services 3.0) installed on a Windows Server 2008 machine. The TFS works fine, but there are error events logged frequently: Log Name: Application Source: Microsoft-Windows-CertificateServicesClient-CredentialRoaming Event ID: 1005 Level: Error Description: Certificate Services Client: Credential Roaming failed to write to the Active Directory. Error code 5 (Access is denied.) The problem is clear (the error message is quite precise) but I don't have a clue how to fix it! Where has the access to be granted? What permissions have to be set?

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• Event 36888 : The following fatal alert was generated: 10. The internal error state is 1203

  - by Param

  I search on the Internet, but i am unable to find, Why this error is coming? It has flooded my Event Viewer, after interval of 1 minutes, this Error pops-up. ( means the frequency is 1 minutes ) I didn't have any IIS installed. This server is purely Domain controller and no other role has been added. Please suggest, what should i do? Server OS - Window Server 2008 R2 Standard Edition More detail:- Log Name: System Source: Schannel Date: 6/28/2012 6:06:11 PM Event ID: 36888 Task Category: None Level: Error Keywords: User: SYSTEM Computer: QKSRVDC212.Corp.abc.com Description: The following fatal alert was generated: 10. The internal error state is 1203. Event Xml: 36888 0 2 0 0 0x8000000000000000 9305 System QKSRVDC212.Corp.abc.com 10 1203 Thanks & Regards, Param

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