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Articles indexed in March 2010

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  • java phone number validation....

    - by user69514
    Here is my problem: Create a constructor for a telephone number given a string in the form xxx-xxx-xxxx or xxx-xxxx for a local number. Throw an exception if the format is not valid. So I was thinking to validate it using a regular expression, but I don't know if I'm doing it correctly. Also what kind of exception would I have to throw? Do I need to create my own exception? public TelephoneNumber(String aString){ if(isPhoneNumberValid(aString)==true){ StringTokenizer tokens = new StringTokenizer("-"); if(tokens.countTokens()==3){ areaCode = Integer.parseInt(tokens.nextToken()); exchangeCode = Integer.parseInt(tokens.nextToken()); number = Integer.parseInt(tokens.nextToken()); } else if(tokens.countTokens()==2){ exchangeCode = Integer.parseInt(tokens.nextToken()); number = Integer.parseInt(tokens.nextToken()); } else{ //throw an excemption here } } } public static boolean isPhoneNumberValid(String phoneNumber){ boolean isValid = false; //Initialize reg ex for phone number. String expression = "(\\d{3})(\\[-])(\\d{4})$"; CharSequence inputStr = phoneNumber; Pattern pattern = Pattern.compile(expression); Matcher matcher = pattern.matcher(inputStr); if(matcher.matches()){ isValid = true; } return isValid; } Hi sorry, yes this is homework. For this assignments the only valid format are xxx-xxx-xxxx and xxx-xxxx, all other formats (xxx)xxx-xxxx or xxxxxxxxxx are invalid in this case. I would like to know if my regular expression is correct

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  • How to tell credentials used for a Network Mapping?

    - by shanecourtrille
    I have a networking mapping that doesn't appear to work. When I connect to the mapping I get access denied when I try to create a folder. When I created the mapping I told it to login as another account. I have verified that account has the proper rights on the server side of things. How can I verify that my local machine is connecting with the right credentials?

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  • Server 2008 R2 Dns Lockup

    - by Richard Maynard
    Hi, We've deployed our first 2008 R2 server on a client site which has replaced their existing 2003 DC. This server provides DNS resolution services to all client machines on that site for general internet usage. Since using the 2008 R2 DNS services we have noticed every couple of days the DNS server starts timing out when requests to certain sites are made (google is the only example I can provide at this time although it seems to be larger sites with problems rather than small - CDN compatiblity issue?). When you restart the DNS Server service then resolution returns to normal... just only for a day or so. Is anybody aware of any significant changes to the DNS server architecture or configuration out of the box in R2 that may explain this intermittent behaviour? I have already tried the fix listed here to no avail: http://weblogs.asp.net/owscott/archive/2009/09/15/windows-server-2008-r2-dns-issues.aspx The following PS command prompt info illustrates the issue: PS C:\Users\Administrator.UK> nslookup Default Server: s8209001.uk.kingdomfaith.com Address: 10.1.3.4 > www.google.com Server: s8209001.uk.kingdomfaith.com Address: 10.1.3.4 Non-authoritative answer: Name: www.l.google.com Addresses: 66.102.9.99 66.102.9.104 66.102.9.105 66.102.9.103 66.102.9.147 Aliases: www.google.com > www.google.co.uk Server: s8209001.uk.kingdomfaith.com Address: 10.1.3.4 * s8209001.uk.kingdomfaith.com can't find www.google.co.uk: Server failed Thanks in advance. Regards,

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  • Xerox Workcentre 3119 and Linux

    - by Milan Babuškov
    I'm trying to get Xerox Workcentre 3119 printer to work on Linux. It's a multifunction device (printer and scanner). I run the CUPS web interface at: http://localhost:631/ and it recognizes it on USB port and even suggests Gutenprint driver from the list. When I try to print a test page, the printer goes through "warming up" process (i.e. lights blink and sound is heard) but does not print anything. There are no errors in /var/log/cups/error_log and access_log shows as if everything is ok. The printer works fine in Windows XP. Does anyone have any experience with this printer on Linux?

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  • Upgraded from fc10 to fc12 now I have eth0_rename, how do I get back to plain old eth0?

    - by shank
    I upgraded from Fedora 10 to Fedora 12. Unfortunately, my ethernet interface eth0 is now named eth0_rename. I'd like to get back to having it named plain old eth0. I googled a bit but the solution of removing the eth0 entry from /etc/udev/rules.d/70-persistent-net.rules seems to have no effect (I restarted the network service but didn't reboot). The interface works just fine although I could see a script or two having a problem with the format. So, it's more of an inconvenience thing than anything else. Any ideas? Thanks.

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  • What Boxee apps do you recommend?

    - by Tim S. Van Haren
    I've recently repurposed an old machine that I had laying around (custom built several years ago with miscellaneous parts) as a simple media center with an Ubuntu 8.10 operating system and Boxee as its front end, and I absolutely love it. I'm particularly intrigued by the custom applications that are possible, and I wanted to start a running list of recommended apps for it. So, my question is this: what Boxee apps do you recommend, and why? One app per answer, please.

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  • Problems with VPN (Hamachi, EasyVPN)

    - by MASARUwota
    Hi. Im having a lot of problems with getting hamachi (and other similar VPN software) to work on my laptop. (Win7 Home Premium 32bit) People can seem to ping me without problems, but trying to ping other people gives me "request timed out". Ive tried everything (disabling firewall, antivirus) but nothing seems to help. How can i fix this?

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  • C++/CLI DLL on C# doesn't compile

    - by Mishgun_
    I wrote a wrapper DLL for some native c++ functions and compiled it in c++/CLI, then I added a reference to C# project, functions indicates there, but when I try compile project I get this error: "Additional information: Could not load file or assembly 'lib, Version=1.0.3742.39593, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An attempt was made to load a program with an incorrect format. " What's the problem ? Thanks.

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  • Optimizing PHP require_once's for low disk i/o?

    - by buggedcom
    Q1) I'm designing a CMS (-who isn't!) but priority is being given to caching. Literally everything is cached. DB rows, DB id queries, Configuration data, processed data, compiled templates. Currently it has two layers of caching. The first is a opcode cache or memory cache such as apc, eaccelerator, xcache or memcached. If an entry is not found in there it is then searched for in the secondary slow cache, ie php includes. Are the opcode caches actually faster than doing a require_once to a php file with a var_export'd array of data in it? My tests are inconclusive as my development box (5.3 of XAMPP) keeps throwing errors installing any of the aforementioned programs. Q2) The CMS has numerous helper classes that are autoloaded on demand instead of loading all files. Mostly each has a require before it so no autoloading needs to take place, however this is not the question. Because a page script can have up to 50/60 helper files included I have a feeling that if the site was under pressure it would buckle because of all the i/o that this incurs. Ignore for the moment that there is output cache in place that would remove the need for what I am about to suggest, and also that opcode caches would render this moot. What I have tried to do is join all the helper files required for the scripts execution in one single file. This is achievable and works well, however it has a side effect of greatly increasing the memory usage dramatically even though technically the same code is being used. What are your thoughts and opinions on this?

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  • JQuery and Nokia :)

    - by Radhika
    Hi I was trying to mobilise my website and I ran into an issue with Jquery. When I was trying to perform a jquery call (.$ajax) it was not getting rendered. This is the part of the code var returnData = ''; $.ajax({url: './indexSubmit.php', async: false, dataType: 'json', data:{flag:'vehicleInfo', vehicleId:xVehicleId}, success: function(data,textStatus){ if(textStatus != 'success'){ alert('Error: '+ textStatus); return; } returnData = data; I am not sure, but I guess I need to install jquery in the browser. If yes, can I automatically download and install jquery in the browser using some javascript?

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  • good __eq__, __lt__, ..., __hash__ methods for image class?

    - by Marten Bauer
    I create the following class: class Image(object): def __init__(self, extension, data, urls=None, user_data=None): self._extension = extension self._data = data self._urls = urls self._user_data = user_data self._hex_digest = hashlib.sha1(self._data).hexDigest() Images should be equal when all values are equal. Therefore I wrote: def __eq__(self, other): if isinstance(other, Image) and self.__dict__ == other.__dict__: return True return False def __ne__(self, other): return not self.__eq__(other) def __lt__(self, other): return self.__dict__ < other.__dict__ ... But how should the __hash__ method look like? Equal Images should return equal hashes... def __hash__(self): # won't work !?! return hash(self.__dict__) Is the way I try to use __eq__, __ne__, __lt__, __hash__, ... recommend?

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  • Forcing a mixed ISO-8859-1 and UTF-8 multi-line string into UTF-8

    - by knorv
    Consider the following problem: A multi-line string $junk contains some lines which are encoded in UTF-8 and some in ISO-8859-1. I don't know a priori which lines are in which encoding, so heuristics will be needed. I want to turn $junk into pure UTF-8 with proper re-encoding of the ISO-8859-1 lines. Also, in the event of errors in the processing I want to provide a "best effort result" rather than throwing an error. My current attempt looks like this: $junk = &force_utf8($junk); sub force_utf8 { my $input = shift; my $output = ''; foreach my $line (split(/\n/, $input)) { if (utf8::valid($line)) { utf8::decode($line); } $output .= "$line\n"; } return $output; } While this appears to work I'm certain this is not the optimal solution. How would you improve my force_utf8(...) sub?

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  • Unknown column '' in 'field list'

    - by Rixius
    I am running a sql in PHP query that is dieing with the mysql_error() of Unknown column '' in 'field list' The query: SELECT `standard` AS fee FROM `corporation_state_fee` WHERE `stateid` = '8' LIMIT 1 when I run the query in PHPmyadmin, it return the information without flagging the error

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  • When to throw exceptions?

    - by FRKT
    Exceptions are wonderful things, but I sometimes worry that I throw too many. Consider this example: Class User { public function User(user){ // Query database for user data if(!user) throw new ExistenceException('User not found'); } } I'd argue that it makes as much sense to simply return false (or set all user data to false in this case), rather than throwing an exception. Which do you prefer?

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  • No feedback from Socket.SendAsync

    - by BowserKingKoopa
    I'm creating a socket and I'm trying to send data through it using SendAsync. My socket isn't connected to anything so I expected to get an error of some sort. However I get nothing. I get no indication that the send didn't work. If I use the synchronous Send method instead of the asynchronous SendAsync method I get an Exception stating that the socket isn't connected to anything. That makes sense to me. When using SendAsync the completed event doesn't ever fire and I get no indication that the send didn't work. So basically my question is how can I tell when SendAsync fails? Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); SocketAsyncEventArgs args = new SocketAsyncEventArgs(); args.SetBuffer(new byte[0], 0, 0); args.Completed += delegate(object sender, SocketAsyncEventArgs e) { Debug.WriteLine("async send complete"); Debug.WriteLine("SOCKET ERROR: " + e.SocketError); }; bool completedSynchronously = socket.SendAsync(args); if (completedSynchronously) { Debug.WriteLine("sync send complete"); Debug.WriteLine("socket error: " + args.SocketError); }

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  • Using a priority queue in Java

    - by Bharat
    Forgive me if this is a tried question, but I'm having a little difficulty figuring it out. I currently have a class Node, and each 'node' is a square in a maze. I'm trying to implement the A* algorithm, so each of these nodes will have an f-cost (int) data member inside of it. I was wondering if there's a way that I can create a priority queue of these nodes, and set up the f-cost variable as the comparator? I've looked at examples online, but all I can find are String priority queues. Can I implement Comparator for the Node class? Would this allow me to access the data member stored inside it? Many Thanks!

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  • How to dismiss the tableview while playing the video in iphone?

    - by Warrior
    I am new to iphone development.I created a application which parse a url and display the content in a table view. On clicking a row ,corresponding video is played. On clicking the "done"button on the player it come back to the table view.I want to dismiss the tableview before playing the video, just like you tube application and on clicking "done" button the table should appear as present modal view. How can i achieve that? Please help me out.Thanks.

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