Search Results

Search found 26810 results on 1073 pages for 'fixed point'.

Page 274/1073 | < Previous Page | 270 271 272 273 274 275 276 277 278 279 280 281  | Next Page >

• Python, Ruby, and C#: Use cases?

  - by thaorius

  Hi everyone. For as long as I can remember, I've always had a "favorite" language, which I use for most projects, until, for some particular reason, there is no way/point on using it for project XYZ. At that point, I find myself rusty (and sometimes outdated) on other languages+libraries+toolchains. So I decided, I would just use some languages/libs/tools for some things, and some for other, effectively keeping them fresh (there would obviously be exceptions, I'm not looking for an arbitrary rule set, but some guidelines). I wanted an opinion on what would be your standard use cases (new projects) for Python, Ruby, and C# (Mono). At the moment, I have time like this:Languages: C#: Mid-Large Sized Projects (mainly server-side daemons) High Performance (I hardly ever need C's performance, but Python just doesn't cut it) Relatively Low Footprint (vs the JVM, for example) Ruby: Web Applications Python: General Use Scripts (automation, system config, etc) Small-Mid Sized Projects Prototyping Web Applications About Ruby, I have no idea what to use it for that I can't use Python for (specially considering Python is more easily found installed by default). And I like both languages (though I'm really new to Ruby), which makes things even worse. As for C#, I have not used a Windows powered computer in a few years, I don't make things for Windows computers, and I don't mind waiting for Mono to implement some new features. That being said, I haven't found many people on the internet using it for server-sided *nix programming (not web related). I would appreciate some insight on this too. Thanks for your time.

  Read the article

• Colored blocks on boot

  - by stackzerad

  When my laptop tries to boot right after POST I see colored blocks with flashing symbols in them. I am able to boot from windows PE cd. Tried fixboot and fixmbr with no success. I have also tried replacing boot files (ntldr, io.sys etc..) and removing video card drivers from windows\system32\drivers. The drive is seagate 2.5 ATA 160GB and has one NTFS partition on it. I have already fixed this issue by reformating the drive and reinstalling everything but after couple of weeks I get the same issue again. The diagnostics software shows no bad sectors on it and virus scan didn't find anything. Does anybody have an idea what this might be? UPDATE: tried defragmenting the hard drive just in case, but still no luck

  Read the article

• Debugging an XBAP application with 64-bit browser

  - by Anne Schuessler

  We have an XBAP application that fails when opened in Internet Explorer 8 64 bit. We only get a pretty generic error which makes it hard to determine where the error is coming from. I'm trying to find a way to debug the application with IE 8 64 bit, but I haven't figured out how to do this. I can't set the 64 bit version as the standard browser and overwriting the browser path in the browsers.xml for Visual Studio doesn't work as well. It just gets overwritten as soon as I hit F5 to debug to point to the 32 bit IE. I have figured out how to start the application from Debug with the 64 bit browser by changing the Debug options from "Start browser with URL" to "Start external program" and setting the command line arguments to point to the bin folder. Unfortunately then the XBAP is looking for its config.deploy file which doesn't seem to be generated during regular debug. This doesn't happen when using "Start browser with URL" and the application doesn't seem to care for this file then. Does anybody know why there's a difference between "Start browser with URL" and "Start external program" in the Debug options which might cause this difference in behavior when Debug is started? Also, does anybody know how to successfully debug an XBAP with a 64-bit browser?

  Read the article

• How is this algorithm, for finding maximum path on a Directed Acyclical Graph, called?

  - by Martín Fixman

  Since some time, I'm using an algorithm that runs in complexity O(V + E) for finding maximum path on a Directed Acyclical Graph from point A to point B, that consists on doing a flood fill to find what nodes are accessible from note A, and how many "parents" (edges that come from other nodes) each node has. Then, I do a BFS but only "activating" a node when I already had used all its "parents". queue <int> a int paths[] ; //Number of paths that go to note i int edge[][] ; //Edges of a int mpath[] ; //max path from 0 to i (without counting the weight of i) int weight[] ; //weight of each node mpath[0] = 0 a.push(0) while not empty(a) for i in edge[a] paths[i] += 1 a.push(i) while not empty(a) for i in children[a] mpath[i] = max(mpath[i], mpath[a] + weight[a]) ; paths[i] -= 1 ; if path[i] = 0 a.push(i) ; Is there any special name for this algorithm? I told it to an Informatics professor, he just called it "Maximum Path on a DAG", but it doesn't sound good when you say "I solved the first problem with a Fenwick Tree, the second with Dijkstra, and the third with Maximum Path".

  Read the article

• Windows 2003 SMTP virtual server, why emails are not delivered?

  - by bardan

  Configured Windows 2003 as my email client, everything works fine with POP3 (i'm able to recieve emails), the problem is with SMTP and i can't figure out how to find where excatly this problem is, because email looks like it is sent, but recipients don't recieve anything... i had some problems with relying, but fixed everything, and now i configured outlook express on the same machine, trying to send emails and it looks everything fine, email goes to SENT folder, no errors, but recipients (tried several diffrent) don't revieve any letters... tried to test from the same machine with telnet like it described there http://support.microsoft.com/kb/153119 ant everything looks ok...

  Read the article

• PHP Mail Not Sending Messages

  - by Kenton de Jong

  I realize this question title is pretty overused, but I couldn't find an answer to my problem. This could be because either I'm not too good with PHP and I don't understand the problem, or because I have a different issue, but I thought I would post it and see if somebody can help me. I developed a website for a local church in my city and I made the site on my computer, put it onto my website as a sub directory and tested it all. It worked great. One of the things the client wanted was there to be an email form that can send emails. I made it and all was good. I then uploaded it onto the church server and thought it went good too. But then we decided to try the email form out, and for some reason it didn't work. I made the email form by having the user select a recipient (pastor, office manager, etc.) with a radio button, and that would change the action of the email form. I just did something like this: if (recipent == "pastor") { document.forms[0].action = "../scripts/php/pastor_contact.php"; } else if (recipent == "pastoralAssist") { document.forms[0].action = "../scripts/php/pastoral_assist_contact.php"; } else if (recipent == "famMinistry") { document.forms[0].action = "../scripts/php/sacra_assist_contact.php"; } else if (recipent == "sacraAssist") { document.forms[0].action = "../scripts/php/fam_ministry_contact.php"; } I know this isn't the cleanest, but it works great. The php files then, all look very similar to this (just a different email)" <?php $name = $_POST['name']; $email = $_POST['email']; $phone = $_POST['phone']; $message = $_POST['message']; $formcontent="From: $name \n Email: $email \n Phone Number: $phone \n Message: $message"; $recipient = "[email protected]"; $subject = $_POST['subject']; $mailheader = "$subject \r\n"; mail($recipient, $subject, $formcontent, $mailheader) or die("There seems to be an error with this form. Sorry about the inconveince. We are working to get this fixed."); header('Location: ../../quickylinks/message_sent.html') ; ?> What this does, briefly, is collect the information from the email form, submit it as an email and then redirect the user to a "Message Sent" page. This works on my server, but not theirs so I believe it's something to do with their server. You can see their server information here and mine here. When the user sends the message, they get "There seems to be an error with this form. Sorry about the inconveince. We are working to get this fixed." and the email doesn't go through, although the code is the same on my server and it works fine there. My initial thought was that PHP wasn't installed on their server (rare, but it does happen). But it was. So then I thought maybe it was installed, but the "mail" function was disabled. So I tried the following php code: <?php if (function_exists('mail')) { echo 'mail() is available'; } else { echo 'mail() has been disabled'; } ?> And it came back with "mail() is available". So now I'm stuck and I don't know the problem could be. As I said, I'm not very good at PHP yet so if somebody could give a detailed answer, I would be really really thankful! Thank you so much!

  Read the article

• Windows Server 2003 Terminal Services error

  - by Adrian S

  Hi! I have a Win2K3 machine which I want to access via remote desktop. When I try remote desktop on another machine the session just ends as soon as it attempts connection. I never see the log-on sceeen or anything. It just returns to the remote desktop connection dialog. I have checked the service on the target machine and it's up and running, so how can I determine the error? Is there any way to re-install terminal services and see if it just fixed?

  Read the article

• Auto-crop black margins dynamically of scanned images?

  - by naxa

  I have a notebook photocopied and the photocopy scanned, about 200 pages. For various reasons I need to print this material. There are large amounts of black areas at the sides of the page (after the page itself ends), "black margins". The image looks like this: I would like to remove the black places, but keeping all text. * The even and odd pages have the black part at different places. * Notably, there is a white edge outside the black one, too! * Most notably, the black areas has no fixed width (I've tried to overlay all the images for even and odd pages separately). It's width varies. The batch algorythm should be able to detect it. Is there a way to remove these black-white margins automatically, keeping the text?

  Read the article

• Organizing files relationally in Windows 7?

  - by Cayetano Gonçalves

  I just took a new job as a policy analyst, and after even one week keeping track of hundreds of files- lawsuits, legislation, letters, etc- in Windows 7 is proving difficult. In my last job I was a database architect and I helped build Linux based servers to track files among an entire department, however there is no way for me to do that at this time in this job. Is there any way to track files/indices/locations/tags/themes and store them in some kind of RDBMS system, instead of storing the files in folders that only allow for flat and fixed storage? For example, if I have a file that deals with: ELID organization Appeals court John Smith It really is inconvenient to have to decide which one of these tags to create into a folder and place the file into it, when it falls under all the categories. Even if I could place tags the way you can in Stack Exchange on files, it would solve a lot of heart ache.

  Read the article

• Pointer incrementing query

  - by Craig

  I have been looking at this piece of code, and it is not doing what I expect. I have 3 globals. int x, y, *pointer, z; Inside of main I declare them. x = 10; y = 25; pointer = &x; now at this point &x is 0x004A144 &y is 0x004A138 pointer is pointing to 0x004A144 Now when I increment: y = *++pointer; it points to 0x004A148, this is the address y should be at shouldn't it? The idea is that incrementing the pointer to 'x' should increment it to point at y, but it doesn't seem to want to declare them in in order like I expect. If this a VS2005 / 2008 problem? Or maybe an Express problem? This isn't really homework, as I have done it a couple of years ago but I was revising on my pointer stuff and I tried this again. But this time I am getting unexpected results. Does anyone have opinions on this? *UPDATE sorry should be more clear, 'thought' on declaration 'y' should be at 148, and that incrementing the pointer pointing to x should increment 'pointer' to 148 (which it does), but that isn't where y is. Why isn't y declaring where it should be.

  Read the article

• Weird MySQL behavior, seems like a SQL bug

  - by Daniel Magliola

  I'm getting a very strange behavior in MySQL, which looks like some kind of weird bug. I know it's common to blame the tried and tested tool for one's mistakes, but I've been going around this for a while. I have 2 tables, I, with 2797 records, and C, with 1429. C references I. I want to delete all records in I that are not used by C, so i'm doing: select * from i where id not in (select id_i from c); That returns 0 records, which, given the record counts in each table, is physically impossible. I'm also pretty sure that the query is right, since it's the same type of query i've been using for the last 2 hours to clean up other tables with orphaned records. To make things even weirder... select * from i where id in (select id_i from c); DOES work, and brings me the 1297 records that I do NOT want to delete. So, IN works, but NOT IN doesn't. Even worse: select * from i where id not in ( select i.id from i inner join c ON i.id = c.id_i ); That DOES work, although it should be equivalent to the first query (i'm just trying mad stuff at this point). Alas, I can't use this query to delete, because I'm using the same table i'm deleting from in the subquery. I'm assuming something in my database is corrupt at this point. In case it matters, these are all MyISAM tables without any foreign keys, whatsoever, and I've run the same queries in my dev machine and in the production server with the same result, so whatever corruption there might be survived a mysqldump / source cycle, which sounds awfully strange. Any ideas on what could be going wrong, or, even more importantly, how I can fix/work around this? Thanks! Daniel

  Read the article

• Time issues on the Network -- How to find the Root Cause

  - by Jeff

  A number of application servers started erroring out in my domain. Troubleshooting led me to a missconfiguration of NTP. I fixed the issue, but I don't know how the issue arose in the first place. The only errors I can find are System Error: 1097 Source: useenv System Error: 1058 Source: useenv System Error: 1030 Source: useenv System Error: 1000 Source: mmc How else can I find out why NTP started acting up on my domain? Is there any troubleshooting steps to diagnose why my DC started pulling from a random timeserver with the wrong time? EDIT: Current issue actually remains: the two 2003 DCs are not syncing with the PDC (a 2k8 box). w32tm /resync -- The computer did not resync because no time data was available.

  Read the article

• Problem using SQLDataReader with Sybase ASE

  - by John K.

  We're developing a reporting application that uses asp.net-mvc (.net 4). We connect through DDTEK.Sybase middleware to a Sybase ASE 12.5 database. We're having a problem pulling data into a datareader (from a stored procedure). The stored procedure computes values (approximately 50 columns) by doing sums, counts, and calling other stored procedures. The problem we're experiencing is... certain (maybe 5% of the columns) come back with NULL or 0. If we debug and copy the SQL statement being used for the datareader and run it inside another SQL tool we get all valid values for all columns. conn = new SybaseConnection { ConnectionString = ConfigurationManager.ConnectionStrings[ConnectStringName].ToString() }; conn.Open(); cmd = new SybaseCommand { CommandTimeout = cmdTimeout, Connection = conn, CommandText = mainSql }; reader = cmd.ExecuteReader(); // AT THIS POINT IMMEDIATELY AFTER THE EXECUTEREADER COMMAND // THE READER CONTAINS THE BAD (NULL OR 0) DATA FOR THESE COLUMNS. DataTable schemaTable = reader.GetSchemaTable(); // AT THIS POINT WE CAN VIEW THE DATATABLE FOR THE SCHEMA AND IT APPEARS CORRECT // THE COLUMNS THAT DON'T WORK HAVE SPECIFICATIONS IDENTICAL TO THE COLUMNS THAT DO WORK Has anyone had problems like this using Sybase and ADO? Thanks, John K.

  Read the article

• How to build an outbound load balancer with linux?

  - by matnagel

  We have a small house in the countryside and there is no fixed broadband, so we had a mobile flatrate first, and for 2 people with 2 computers it was too slow, so now we have 2 flatrates for 2 client machines. So I pay 2 flatrates and have double bandwith theoretically. There is a local network in the house that connects everything. But when I am alone I wonder how I can use both connections at the same time. I want to build a solution where I can browse the web and page requests are spread between the 2 connections. I imagine there are expensive routers who can split the traffic between 2 lines. But is there a good way to do it with linux? The solution I am looking for will split the requests already for one page (multiple images, css files, javascrfipt files) between the two lines.

  Read the article

• Typical Hadoop setup for remote job submission

  - by Artii

  So I am still a bit new to hadoop and am currently in the process of setting up a small test cluster on Amazonaws. So my question relates to some tips on the structuring of the cluster so it is possible to work submit jobs from remote machines. Currently I have 5 machines. 4 are basically the Hadoop cluster with the NameNodes, Yarn etc. One machine is used as a manager machine( Cloudera Manager). I am gonna describe my thinking process on the setup and if anyone can chime in the points I am not clear with, that would be great. I was thinking what was the best setup for a small cluster. So I decided to expose only one manager machine and probably use that to submit all the jobs through it. The other machines will see each other etc, but not be accessible from the outside world. I am have conceptual idea on how to do this,but I am not sure how to properly go about doing this though, if anyone could point me in the right direction that would great. Also another big point is, I want to be able to submit jobs to the cluster through exposed machine from a client machine (might be Windows). I am not so clear on this setup as well. Do I need to have Hadoop installed on the machine in order to use the normal hadoop commands, and to write/submit jobs say from Eclipse or something similar. So to sum it up my questions are, Is this an ok setup for a small test cluster How can I go about using one exposed machine to submit/route jobs to the cluster, without having any of the Hadoop nodes on it. How do I setup a client machine to submit jobs to a remote cluster, and an example on how to do it on Windows. Also if there are any reason not to use Windows as a client machine in this setup. Thanks I would greatly appreciate any advice or help on this.

  Read the article

• Sharing settings between a few virtual hosts in Apache

  - by Ivan Virabyan

  There are many virtual hosts in my apache configuration, each having quite a big amount of settings. The problem is that most of the virtual servers have the same settings. So config file is huge, full of identical virtual hosts, that differ only by ServerName directive. To change or add setting, I need to go through all of these vhosts. Is it possible to somehow share settings between virtual hosts, but still having few of them with their own ones? I hoped dynamic vhosts would be a good solution, but as I understand, it doesn't fit my problem, because there is no way to set specific settings for some of the vhosts. Furthermore I don't want my vhosts to be dynamic, because I have a fixed number of them. ServerAlias directive is also not a solution, because I need to know what url the user came from.

  Read the article

• Computer never connects to the internet automatically on startup?

  - by RawR Crew

  I have my Windows Vista laptop connected directly to the router via an ethernet cable, and every time I switch the computer on, the computer cannot connect to the internet. It comes up as limited or no connectivity, I am assuming because it has not been assigned an IP address by the router - not too sure if this is right. The problem is usually fixed either by performing a repair through the networking control panel or removing and re-inserting the ethernet cable. It will also connect without doing any of these if the computer is left idle for about 20 minutes. It will connect fine wirelessly without the need for any of this, however I would prefer to connect via the cable. Any ideas how I can fix this? I have replaced the ethernet cable and router already (identical model) but these haven't helped. Thanks for any help on this.

  Read the article

• How to stop Word 2011 opening hyperlinks on click?

  - by John Yeates

  In previous versions of MS Word, there was a preference for the action to be taken when the user clicked a hyperlink: open it, or edit it. Word 2011 appears to have defaulted to opening the hyperlink, and I can't find the preference to change this behaviour. How can I change Word's default behaviour when a hyperlink is clicked to be editing the text of the hyperlink? Holding down a modifier key when clicking is not an acceptable solution, as the aim here is to prevent misclicks from causing web pages to open. Edit: the links need to stay as links in the saved document. But when clicked on my machine, they should not open; Word needs to default to just editing the link, so an inaccurate click does not take me out of the document into Safari. Older versions of Word had a preference controlling this, and Microsoft seem to have removed it and fixed the behaviour at the unsafe option in order to satisfy the point-and-drool crowd.

  Read the article

• php and mysql listing databases and looping through results

  - by Jacksta

  Beginner help needed :) I am doign an example form a php book which lists tables in databases. I am getting an error on line 36: $db_list .= "$table_list"; <?php //connect to database $connection = mysql_connect("localhost", "admin_cantsayno", "cantsayno") or die(mysql_error()); //list databases $dbs = @mysql_list_dbs($connection) or die(mysql_error()); //start first bullet list $db_list = "<ul>"; $db_num = 0; //loop through results of functions while ($db_num < mysql_num_rows($dbs)) { //get database names and make each a list point $db_names[$db_num] = mysql_tablename($dbs, $db_num); $db_list .= "<li>$db_names[$db_num]"; //get table names and make another list $tables = @mysql_list_tables($db_names[$db_num]) or die(mysql_error()); $table_list = "<ul>"; $table_num = 0; //loop through results of function while ($table_num < mysql_num_rows($tables)){ //get table names and make each bullet point $table_names[$table_num] = mysql_tablename($tables, $table_num); $table_list .= "<li>$table_names[$table_num]"; $table_num++; } //close inner bullet list and increment number to continue $table_list .= "</ul>" $db_list .= "$table_list"; $db_num++; } //close outer bullet list $db_list .= "</ul>"; ?> <html> <head> <title>MySQL Tables</title> </head> <body> <p><strong>Data bases and tables on local host</strong></p> <? echo "$db_list"; ?> </body>

  Read the article

• How to have multiple instances of jQuery plugin on single page?

  - by James Skidmore

  I'm writing a simple jQuery plugin, but I'm having trouble being able to use multiple instances on a page. For instance, here is a sample plugin to illustrate my point: (function($) { $.fn.samplePlugin = function(options) { if (typeof foo != 'undefined') { alert('Already defined!'); } else { var foo = 'bar'; } }; })(jQuery); And then if I do this: $(document).ready(function(){ $('#myDiv').samplePlugin({}); // does nothing $('#myDiv2').samplePlugion({}); // alerts "Already defined!" }); This is obviously an over-simplified example to get across the point. So my question is, how do I have two separate instances of the plugin? I'd like to be able to use it across multiple instances on the same page. I'm guessing that part of the problem might be with defining the variables in a global scope. How can I define them unique to that instance of the plugin then? Thank you for your guidance!

  Read the article

• How to generate a number in arbitrary range using random()={0..1} preserving uniformness and density?

  - by psihodelia

  Generate a random number in range [x..y] where x and y are any arbitrary floating point numbers. Use function random(), which returns a random floating point number in range [0..1] from P uniformly distributed numbers (call it "density"). Uniform distribution must be preserved and P must be scaled as well. I think, there is no easy solution for such problem. To simplify it a bit, I ask you how to generate a number in interval [-0.5 .. 0.5], then in [0 .. 2], then in [-2 .. 0], preserving uniformness and density? Thus, for [0 .. 2] it must generate a random number from P*2 uniformly distributed numbers. The obvious simple solution random() * (x - y) + y will generate not all possible numbers because of the lower density for all abs(x-y)>1.0 cases. Many possible values will be missed. Remember, that random() returns only a number from P possible numbers. Then, if you multiply such number by Q, it will give you only one of P possible values, scaled by Q, but you have to scale density P by Q as well.

  Read the article

• belkin wireless router connection drops for ~60sec every ~15 mins

  - by j j

  Hi, I have a belkin wireless-g router, model F5D7230-4. about every 10-15 minutes, for about 1-1.5 mins I won't be able to browse any web sites. during this period, I usually get replys from "ping google.com". maybe 4/5 times I'll get a reply, 1/5 times i don't. I have changed the router DNS entries from "get DNS server from ISP" to 8.8.8.8, google's DNS and that hasn't fixed the situation. This happens on several computers, running windows7, xp, ubuntu, and a mac, so it is definitely NOT an issue with a computer configuration. any ideas?

  Read the article

• Tweaks to make Cleartype better at high resolutions?

  - by ULTRA_POROV

  Cleartype is great when displaying small text (say 10-16px). However when you display something above 20px it starts looking like mud. Just compare it to Photoshop. Photoshop rendering at small size is not very impressive, too blurry. But if you compare it at 20px, Photoshop wins all the time. Cleartype looks jaggy around the edges, almost like there is no Cleartype at all. Can this be fixed, or is it just the way Cleartype is?

  Read the article

• Recursion in prepared statements

  - by Rob

  I've been using PDO and preparing all my statements primarily for security reasons. However, I have a part of my code that does execute the same statement many times with different parameters, and I thought this would be where the prepared statements really shine. But they actually break the code... The basic logic of the code is this. function someFunction($something) { global $pdo; $array = array(); static $handle = null; if (!$handle) { $handle = $pdo->prepare("A STATEMENT WITH :a_param"); } $handle->bindValue(":a_param", $something); if ($handle->execute()) { while ($row = $handle->fetch()) { $array[] = someFunction($row['blah']); } } return $array; } It looked fine to me, but it was missing out a lot of rows. Eventually I realised that the statement handle was being changed (executed with different param), which means the call to fetch in the while loop will only ever work once, then the function calls itself again, and the result set is changed. So I am wondering what's the best way of using PDO prepared statements in a recursive way. One way could be to use fetchAll(), but it says in the manual that has a substantial overhead. The whole point of this is to make it more efficient. The other thing I could do is not reuse a static handle, and instead make a new one every time. I believe that since the query string is the same, internally the MySQL driver will be using a prepared statement anyway, so there is just the small overhead of creating a new handle on each recursive call. Personally I think that defeats the point. Or is there some way of rewriting this?

  Read the article

• Gnome 3 - Unable to change date and time

  - by Chris Harris

  I am running Arch Linux with Gnome 3. Unfortunately, although my time and date settings in /etc/rc.conf show that HARDWARECLOCK='UTC' and TIMEZONE='America/LosAngeles'. I continue to get the timezone of Europe/London. If I try to change the date and time via the GUI. It requires root access. After authorizing root access, the date and time may be changed; however, after closing the GUI window, it automatically reverts back to the previous incorrect timezone. I am able to use pool.ntp.org in order to sync my time to the correct one; however, this works only for the current session and is not fixed. This solution is inconvenient since there is not always network access. What other solutions are available for this problem?

  Read the article

< Previous Page | 270 271 272 273 274 275 276 277 278 279 280 281  | Next Page >