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• sqlplus remove \r \n \t from spool

  - by Tom

  Hi all, Is there any sql*plus command to remove \r \n and\t from the result set that's going out to the spool file? That is, "trim" every record? We've used set trim on in the past, but it doesn't seem to bue what we need right now. I'm trying to avoid calling oracle's translate, chr functions in the sql query. For example, If my query returns this |DATA| |\n \t\t\t\t\t thisistheactualdata \t\t\t\t\t\t\n| I'd like to keep this |DATA| |thisistheactualdata| Thanks in advance.

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• Hiding Options of a Select with JQuery

  - by Syed Abdul Rahman

  Okay, let's start with an example. Keep in mind, this is only an example. <select id = "selection1">     <option value = "1" id = "1">Number 1</option>     <option value = "2" id = "2">Number 2</option>     <option value = "3" id = "3">Number 3</option> </select> Now from here, we have a dropdown with 3 options. What I want to do now is to hide an option. Adding style = "display:none" will not help. The option would not appear in the dropdownlist, but using the arrow keys, you can still select it. Essentially, it does exactly what the code says. It isn't displayed, and it stops there. A JQuery function of $("#1").hide() will not work. Plus, I don't only want to hide the option, I want to completely remove it. Any possibility on doing so? Do I have to use parent/sibling/child elements? If so, I'm still not sure how. Any help on this would be greatly appreciated. Thanks.           Another question - It's related Ok, so I found out that there is a .remove() available in JQuery. Works well. But what if I want to bring it back? if(condition)     {     $(this).remove();     } I can loops this. Shouldn't be complicated. But the thing of which I am trying to do is this: Maximum Capacity of Class: (Input field here) Select Room: (Dropdown here) What I'd like for it to do is to update is Dropdown using a function such as .change() or .keyup. I could create the dropdown only after something is typed. At a change or a keyup, execute the dropdown accordingly. But what I am doing is this: $roomarray = mysql_query("SELECT *     FROM         (         SELECT *,         CASE         WHEN type = 'Classroom' THEN 1         WHEN type = 'Computer laboratory' THEN 2         WHEN type = 'Lecture Hall' THEN 3         WHEN type = 'Auditorium' THEN 4         END AS ClassTypeValue         FROM rooms         ) t     ORDER BY ClassTypeValue, maxppl, roomID"); echo "<select id = \"room\">"; while ($rooms = mysql_fetch_array($roomarray)) { ?> <option value=<?php echo $rooms['roomID']; ?> id=<?php echo $rooms['roomID']; ?>><?php echo $rooms['type']; echo "&nbsp;"; echo $rooms['roomID']; echo "&nbsp;("; echo $rooms['maxppl']; echo ")"; ?></option> <?php } echo "</select>"; Yes, I know it is very messy. I plan to change it later on. But the issue now is this: Can I toggle the removal of the options according to what has been typed? Is it possible to do so with a dropdown made from a loop? Because I sure as hell can't keep executing SQL Queries. Or is that even an option? Because if it's possible, I still think it's a bad one.

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• One repository/multiple projects without getting mixed up?

  - by OverTheRainbow

  Hello After reading Joel's last article on Mercurial, I'm giving it a shot on XP as a single-user, single-computer source control system. One thing I'd like to check, though, is: It'd be easier to just create a repository of all the tiny projects I keep in eg. C:\VB.Net\, but the result is that the changes I make to the different projects therein (C:\VB.Net\ProjectA\, C:\VB.Net\ProjectB\, etc.) will be mixed in a single changelog. But if I use a single repository for all projects, when I do diff's or go through the change history, will I be able to filter data so that I only see changes pertaining to a given project? Otherwise, is creating repositories in each project directory the only solution? Thank you.

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• Learning networking fundamentals

  - by bplus

  Not having a CS degree has left large holes in my programming related knowledge. In particular I'd really like to learn some of the computer networking stuff I would have got in a good CS degree. The problem I really have is "not knowing what I don't know". So far I know I don't know anything about the following (as far as computer networks are concearned) -sockets -ports -internet protocol (the whole IP stack I keep hearing about). Can anyone add more to the list? Can anyone suggest a project (writing a toy web server?) Thanks in advance

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• Generator speed in python 3

  - by Will

  Hello all, I am going through a link about generators that someone posted. In the beginning he compares the two functions below. On his setup he showed a speed increase of 5% with the generator. I'm running windows XP, python 3.1.1, and cannot seem to duplicate the results. I keep showing the "old way"(logs1) as being slightly faster when tested with the provided logs and up to 1GB of duplicated data. Can someone help me understand whats happening differently? Thanks! def logs1(): wwwlog = open("big-access-log") total = 0 for line in wwwlog: bytestr = line.rsplit(None,1)[1] if bytestr != '-': total += int(bytestr) return total def logs2(): wwwlog = open("big-access-log") bytecolumn = (line.rsplit(None,1)[1] for line in wwwlog) getbytes = (int(x) for x in bytecolumn if x != '-') return sum(getbytes)

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• Javascript: Passing large objects or strings between function considered a bad practice

  - by Mr. Smee

  Is it considered a bad practice to pass around a large string or object (lets say from an ajax response) between functions? Would it be beneficial in any way save the response in a variable and keep reusing that variable? So in the code it would be something like this: var response; $.post(url, function(resp){ response = resp; }) function doSomething() { // do something with the response here } vs $.post(url, function(resp){ doSomething(resp); }) function doSomething(resp) { // do something with the resp here } Assume resp is a large object or string and it can be passed around between multiple functions.

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• Inline Conditional Statement in Stored Procedure

  - by Jason

  Here is the pseudo-code for my inline query in my code: select columnOne from myTable where columnOne = '#variableOne#' if len(variableTwo) gt 0 and columnTwo = '#variableTwo#' end I would like to move this into a stored procedure but am having trouble building the query correctly. I assume it would be something like select columnOne from myTable where columnOne = @variableOne CASE WHEN len(@variableTwo) <> 0 THEN and columnTwo = @variableTwo END This is giving me a syntax error. Could someone tell me what I've got wrong. Also, I would like to keep it to only one query and not just have one if statement. Also, I do not want to build the sql in the stored procedure and run Exec() on it.

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• Is it possible to do have Capistrano do a checkout over a reverse SSH tunnel?

  - by James A. Rosen

  I am developing an application that resides on a public host but whose source I must keep in a Git repository behind a corporate firewall. I'm getting very tired of the slowness of deploying via scp (copying the whole repository and shipping it over SSH on each deploy) and would like to have the remote host simply do a git pull to update. The problem is that the firewall prohibits incoming SSH connections. Would it be possible for me to set up an SSH tunnel from my computer to the deployment computer and use my repository as the source for the git pull? After all, git is distributed, so my copy is just as valid a repository as the central one. If this is possible, what would the tunnel command and the Capistrano configuration be? I think the tunnel will look something like ssh -R something:deployserver.com:something [email protected]

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• Connection Timeout Extension/Detection

  - by ircmaxell

  Well, let me start off by explaining what I'm trying to do. I have an application that stalls a HTTP connection until new data is available (sometimes a few seconds, sometimes 30 minutes or so). Right now, the system works fine if the data is sent within a few minutes. The problem I'm facing, is that it doesn't seem that XHR recognizes a dropped connection... So instead of killing the current connection and reconnecting when it detects a dropped connection, it just sits there. I'd really not like to have it force-reconnect every minute or two (That's one reason this app was written, to stop the need for polling). So, my questions are as follows: Is there a way to detect a dropped (not closed) TCP connection with XHR? Is there a way that I can tell XHR not to timeout (I saw IE8 has the .timeout property) Would it be better to send a header (or some other content) every now and then (say once per minute) down the pipe to keep the connection open? Thanks.

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• Orchard - Can't find the Resource defined in ResourceManifest.cs

  - by mlang

  I have a custom there, where I try to require some of my css and js files via the ResourceManifest.cs file - I keep into running a quite weird issue tough. I get the following error: a 'script' named 'FoundationScript' could not be found This is my ResourceManifest.cs: using Orchard.UI.Resources; namespace Themes.TestTheme { public class ResourceManifest : IResourceManifestProvider { public void BuildManifest(ResourceManifestBuilder builder) { var manifest = builder.Add(); manifest.DefineStyle("Foundation").SetUrl("foundation.min.css"); manifest.DefineScript("FoundationScript").SetUrl("foundation.min.js"); } } } In the Layout.cshtml, I have following: @{ Script.Require("ShapesBase"); Script.Require("FoundationScript"); Style.Include("site.css"); Style.Require("Foundation"); } What am I missing here?

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• I still can't ask the question I want to ask! [closed]

  - by Dennis

  Possible Duplicate: Unable to post question despite having no hyperlinks I'm trying to leave a real question but I keep getting this error: We're sorry, but as a spam prevention mechanism, new users can only post a maximum of one hyperlink. Earn 10 reputation to post more hyperlinks. I have removed all the hyper links in the question but I'm still getting the error. Is there someone I can email the code to so we can figure out what the problem is? And I really didn't appreciate the smart ass comment left by whom ever close my last question.

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• How do partialviews work in asp.net MVC when passing parameters back?

  - by Rob Ellis

  I have a page with a partialview on it which is a list of items. I have a button on it which shows the next 5 items. This is done via ajax:- using (Ajax.BeginForm("ShowUpdates", new AjaxOptions() { UpdateTargetId = "statusUpdateContainer", InsertionMode = InsertionMode.InsertAfter })) { <input type="submit" class="formbutton" value="Show More" style="width:100%;"/> } My partial view controller: [HttpPost] public ActionResult ShowUpdates(string page, string pagesize) { //get data code hidden here return PartialView("_statusUpdates"); } My question is that I need the 'page' variable to increment each time someone presses the form button which is contained within the partialview. How do I keep track of that variable?

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• How can I receive messages over http without MSMQ

  - by pduncan

  I need a reliable messaging framework that runs over http/https (due to client security requirements) and that doesn't use MSMQ (because some clients will use Windows XP Home). The clients only need to be able to receive messages, not send them. We already have a message queue on the server for each user, and the receivers have been getting messages by connecting to an HttpHandler on the server and getting a Stream from WebResponse.GetResponseStream() We keep this stream open, and pull messages off of it using Stream.Read(). This MOSTLY works, but Stream.Read() is a blocking call, and we can't reliably interrupt it. We need to be able to stop and start the receiver without losing messages, but the old stream often hangs around, even after we call Thread.Abort on its thread. Any suggestions?

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• How to build unlimited level of menu through PHP and mysql

  - by Starx

  Well, to build my menu my menu I use a db similar structure like this To assign another submenu for existing submenu I simply assign its parent's id as its value of parent field. parent 0 means top menu now there is not problem while creating submenu inside another submenu now this is way I fetch the submenu for the top menu <ul class="topmenu"> <? $list = $obj -> childmenu($parentid); //this list contains the array of submenu under $parendid foreach($list as $menu) { extract($menu); echo '<li><a href="#">'.$name.'</a></li>'; } ?> </ul> What I want to do is. I want to check if a new menu has other child menu and I want to keep on checking until it searches every child menu that is available and I want to display its child menu inside its particular list item like this Home ........

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• Breadth first search all paths

  - by Amndeep7

  First of all, thank you for looking at this question. For a school assignment we're supposed to create a BFS algorithm and use it to do various things. One of these things is that we're supposed to find all of the paths between the root and the goal nodes of a graph. I have no idea how to do this as I can't find a way to keep track of all of the alternate routes without also including copies/cycles. Here is my BFS code: def makePath(predecessors, last): return makePath(predecessors, predecessors[last]) + [last] if last else [] def BFS1b(node, goal): Q = [node] predecessor = {node:None} while Q: current = Q.pop(0) if current[0] == goal: return makePath(predecessor, goal) for subnode in graph[current[0]][2:]: if subnode[0] not in predecessor: predecessor[subnode[0]] = current[0] Q.append(subnode[0]) A conceptual push in the right direction would be greatly appreciated. tl;dr How do I use BFS to find all of the paths between two nodes?

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• Connecting Delphi to P/Invoke and .net

  - by lexdean

  The Delphi complier often uses a *.Dll when a special delivery of code info is required to the complier/editor:- example bourland.dll is the memory manager for the Delphi complier, as I remember. And their are many other *.dll's that Embarcoo keep secret that do other things. Is their anything you know that is public information on this subject .net's un managed code could be declared in a *.pas file as a decelerations but the only way to communicate it out is calling *.dll's like P/Invoke I have ilasm.exe and ildasm.exe and a decomplier into Delphi asm code now but still getting around to learn how to use them all yet. I do not have any reference material/editorials on P/invoke at all as I cannot find anything With that I will have a good concrete plan to make a good result I do not know what *.DLL's are in P/Invoke. Do you have any documentation. I do not have any reference material/editorials on ADO.net. The Dlls that are called and any referqance matrial I could use. Best regards, J Lex Dean.

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• OOP App Architecture: Which layer does a lazy loader sit in?

  - by JW

  I am planning the implemention an Inheritance Mapper pattern for an application component http://martinfowler.com/eaaCatalog/inheritanceMappers.html One feature it needs to have is for a domain object to reference a large list of aggreageted items (10,000 other domain objects) So I need some kind of lazy loading collection to be passed out of the aggregate root domain object to other domain objects. To keep my (php) model scripts organised i am storing them in two folders: MyComponent\ controllers\ models\ domain\ <- domain objects, DDD repository, DDD factory daccess\ <- PoEAA data mappers, SQL queries etc views\ But now I am racking my brains wondering where my lazy loading collection sits. Any suggestions / justifications for putting it in one place over another another? DDD = Domain Driven Design Patterns, Eric Evans - book PoEAA = Patterns of Application Architecture Patterns, Martin Fowler - book

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• C++ program runs slow in VS2008

  - by Nima

  I have a program written in C++, that opens a binary file(test.bin), reads it object by object, and puts each object into a new file (it opens the new file, writes into it(append), and closes it). I use fopen/fclose, fread and fwrite. test.bin contains 20,000 objects. This program runs under linux with g++ in 1 sec but in VS2008 in debug/release mode in 1min! There are reasons why I don't do them in batches or don't keep them in memory or any other kind of optimizations. I just wonder why it is that much slow under windows. Thanks,

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• Soundpool sample not ready

  - by SteD

  I have a .wav file that I'd like to use across my game, currently I am loading the sound in onCreate() of each activity in the game. soundCount = soundpool.load(this,R.raw.count, 1); The sound will be played once the activity starts. soundpool.play(soundCount, 0.9f, 0.9f, 1, -1, 1f); Problem is at times I will hit the error "sample x not ready". Is it possible to load the .wav file once upon starting the game and keep it in memory and use it later across the game? Or is it possible to wait for 1-2 seconds for the sound to load finish?

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• How are variables bound to the body of a define_method?

  - by Chris

  While trying to brush up my Ruby skills I keep running across this case which I can't figure out an explanation for by just reading the API docs. An explanation would be greatly appreciated. Here's the example code: for name in [ :new, :create, :destroy ] define_method("test_#{name}") do puts name end end What I want/expect to happen is that the name variable will be bound to the block given to define_method and that when #test_new is called it will output "new". Instead each defined method outputs "destroy" -- the last value assigned to the name variable. What am I misunderstanding about define_method and its blocks? Thanks!

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• How to set background image in Java?

  - by Dew

  I am developing a simple platform game using Java using BlueJ as the IDE. Right now I have player/enemy sprites, platforms and other items in the game drawn using polygons and simple shapes. Eventually I hope to replace them with actual images. For now I would like to know what is the simplest solution to setting an image (either URL or from local source) as the 'background' of my game window/canvas? I would appreciate it if it isn't something long or complex as my programming skills aren't very good and I want to keep my program as simple as possible. Kindly provide example codes with comments to elaborate on their function, and also if it's in its own class, how to call on relevant methods used by it on other classes. Thank you very much.

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• Making archive from files with same names in different directories

  - by Tim

  Hi, I have some files with same names but under different directories. For example, path1/filea, path1/fileb, path2/filea, path2/fileb,.... What is the best way to make the files into an archive? Under these directories, there are other files that I don't want to make into the archive. Off the top of my head, I think of using Bash, probably ar, tar and other commands, but am not sure how exactly to do it. Renaming the files seems to make the file names a little complicated. I tend to keep the directory structure inside the archive. Or I might be wrong. Other ideas are welcome! Thanks and regards!

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• Maintaining a common set of Eclipse preferences

  - by Robert Munteanu

  Whenever I switch workspaces/Eclipse installs I need to copy/redo the preferences: compiler settings; font sizes/families; code formatter; java code templates; editor templates; code clean-ups; I would like to maintain these settings in an unitary way, preferrably under source control. How can I do that? I know about 'copy settings' when creating a new workspace, but it does not keep updated copies.

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• What's the best way to write a maintainable web scraping app?

  - by Benj

  I wrote a perl script a while ago which logged into my online banking and emailed me my balance and a mini-statement every day. I found it very useful for keeping track of my finances. The only problem is that I wrote it just using perl and curl and it was quite complicated and hard to maintain. After a few instances of my bank changing their webpage I got fed up of debugging it to keep it up to date. So what's the best way of writing such a program in such a way that it's easy to maintain? I'd like to write a nice well engineered version in either Perl or Java which will be easy to update when the bank inevitably fiddle with their web site.

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• How return a std::string from C's "getcwd" function

  - by rubenvb

  Sorry to keep hammering on this, but I'm trying to learn :). Is this any good? And yes, I care about memory leaks. I can't find a decent way of preallocating the char*, because there simply seems to be no cross-platform way. const string getcwd() { char* a_cwd = getcwd(NULL,0); string s_cwd(a_cwd); free(a_cwd); return s_cwd; } UPDATE2: without Boost or Qt, the most common stuff can get long-winded (see accepted answer)

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