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• sftp and public keys

  - by Lizard

  I am trying to sftp into an a server hosted by someone else. To make sure this worked I did the standard sftp [email protected] i was promted with the password and that worked fine. I am setting up a cron script to send a file once a week so have given them our public key which they claim to have added to their authorized_keys file. I now try sftp [email protected] again and I am still prompted for a password, but now the password doesn't work... Connecting to [email protected]... [email protected]'s password: Permission denied, please try again. [email protected]'s password: Permission denied, please try again. [email protected]'s password: Permission denied (publickey,password). Couldn't read packet: Connection reset by peer I did notice however that if I simply pressed enter (no password) it logged me in fine... So here are my questions: Is there a way to check what privatekey/pulbickey pair my sftp connection is using? Is it possible to specify what key pair to use? If all is setup correctly (using correct key pair and added to authorized files) why am I being asked to enter a blank password? Thanks for your help in advance! UPDATE I have just run sftp -vvv [email protected] .... debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred gssapi-with-mic,publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Offering public key: /root/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Server accepts key: pkalg ssh-rsa blen 277 debug2: input_userauth_pk_ok: SHA1 fp 45:1b:e7:b6:33:41:1c:bb:0f:e3:c1:0f:1b:b0:d5:e4:28:a3:3f:0e debug3: sign_and_send_pubkey debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey,password debug1: Trying private key: /root/.ssh/id_dsa debug3: no such identity: /root/.ssh/id_dsa debug2: we did not send a packet, disable method debug3: authmethod_lookup password debug3: remaining preferred: ,password debug3: authmethod_is_enabled password debug1: Next authentication method: password It seems to suggest that it tries to use the public key... What am I missing?

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• Firefox 11 sync with Android device

  - by gisek

  I've just installed Firefox 11. I'd like to sync it with the one on my Android device. I tried to follow the instructions they provided and tried to pair device. I entered the code from Android to desktop. This made my phone show a window showing 'Waiting for device' and a progress bar running all over again. Than I tried to use 'I'm not near my computer' option on Android. I am asked for email, password and a recovery key. So I googled a little and found an instruction. I go to Options/Sync. But there are only 2 options: Set Up Firefox Sync Pair a device So how can I get this recovery key?

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• Broadcomm WIDCOMM A2DP Quality Adjustment

  - by snicker

  So I got a sweet pair of bluetooth A2DP headphones for a sweet, sweet price (Motorola A805, if you were wondering). They sound great paired with an iPhone. However, when I pair with a computer using the latest and greatest WIDCOMM drivers, the quality is quite poor, almost un-listenable... clicking, popping, scratching. The remedy on one machine was using BlueSoleil, another bluetooth stack, as there is an adjustment for the Bitpool settings that allow you to jack the quality up. Sounds great. However, the bluetooth chipset in my other machine is not supported by BlueSoleil... so I'm stuck with the WIDCOMM stack. So the question is... Is there an undocumented way to turn up the quality for A2DP in the WIDCOMM drivers? first question on SU, usually lurking on SO.. =]

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• Can someone explain the physical architecture of RAID 10 in complete layman's terms?

  - by Hank

  I am a newbie in the world of storage and I am having a hard time digesting the physical architecture of some of the RAID levels. I am particularly interested in RAID 10, and 50. I asked the question specifically about RAID 10, because I feel if I understand that, I'll understand the other. So, I get the definition of RAID 10 - "minimum 4 disks, a striped array whose segments are mirrored". If I've got 4 disks and Disks 1 and 2 are a mirrored pair, and Disks 3 and 4 are a mirrored pair - where does the data get striped? Thanks.

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• What kind of eye wear can I use to protect my eyes from being irritated from staring at a screen all

  - by dr dork

  Many of us stare at computer screens all day. Lately, my eyes have been irritated from prolonged staring at my computer screens. Does anyone use or know of any eye wear technology that helps with this? About five years back, I bought a pair of non-prescription eye glasses that had a no-glare layer put on them by an optometrist. It slightly helped, so I'm considering getting another pair. Is this the best option I have at this point? Thanks so much in advance for your wisdom!

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• What kind of eye wear can I use to protect my eyes from staring at a screen all day?

  - by dr dork

  Many of us stare at computer screens all day. Lately, my eyes have been irritated from prolonged staring at my computer screens. Does anyone use or know of any eye wear technology that helps with this? About five years back, I bought a pair of prescription-1 eye glasses that had a no-glare layer put on them. It slightly helped, so I'm considering getting another pair. Is this the best option I have at this point? Thanks so much in advance for your wisdom!

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• Windows 7 Desktop as Bluetooth Mixer

  - by J.R. Lillard

  I would like to stream all the audio from my Droid X2 to my desktop running Windows 7 via bluetooth. When I pair the two devices I can make this work but the audio plays through the internal speakers. I am actually wanting to listen to everything through a pair of bluetooth headphones. The end result would be that I could listen to music from my phone but easily pause it to listen to audio from the desktop instead. So far I have not had any luck. I thought about connecting the line out to the line in so I could monitor the line in from my headphones. My current setup is wiring the phone to the line in and then monitoring the line in through the headphones. I'm just wanting to eliminate the wire and go wireless the whole way. Is there something in Windows that prevents it from taking an inbound audio stream and sending it out another device?

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• ssh rsa keys expires after 5 years

  - by Kreker

  I'm using an old login with ssh-rsa public/private key and all was good. I noticed that a couple of days ago the authorizazion was avoid with message "server refused our keys". After diggin' I figured out that the couple of keys stop working after exactly 5 years of their creation. So I make a new pair of keys, take the public one, paste inside a file in ~/.ssh of the username that I'm using, converted it with ssh-keygen -if and paste the new file into authorized_keys but the I still get "server refused our key". It's ok to copy and paste the real key without transfer it? What I'm missing? This isn't my first time using a pair of keys and I follow the same procedure as described. I'm in doubt if I'm changing the correct authorized_keys file but I've take a look in /etc/passwd and see where is the home of the login which I'm using.

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• Restrict only some plugins to specific sites in Google Chrome

  - by Christian

  I am looking for a way to set up Google Chrome so that it will run a certain plug-in (Java, what else?) only on whitelisted sites, but other plug-ins (like the PDF viewer) everywhere. From playing with the policies available for Chrome, I think there are basically two levels of plug-in management: List of disabled plugins/enabled plugins: Controls whether a plug-in exists for the browser at all This pair of policies applies to plug-ins, but not to sites. Default plug-in settings/Allow plug-ins on sites: Controls on which sites plug-ins can run This set of policies applies to sites, but not to individual plugins, and it cannot override the first pair. There appears to be no way to configure Chrome so that some plug-ins only run on whitelisted sites, but others run everywhere by default. I have also looked at filtering content on the firewall/proxy level, but I'm not convinced it can be done securely there. Filtering by URLs (file names) or content types can be circumvented trivially, and identification by content inspection cannot be safe either.

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• Excel - Reuse a trend line to apply to other data

  - by milko

  I've obtained a trend line from a particular set of data. What I'd like to do now is to reuse this trend line to predict values from a given pair (x,y) of coordinates. To put it another way, I have one pair (x,y) that I know is correct for sure. I don't know any other point. Let's assume the behavior of this new set is similar to the one I've got the trend line from. Is there any way Excel could compute other points following this trend line?

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• question about qsort in c++

  - by davit-datuashvili

  i have following code in c++ #include <iostream> using namespace std; void qsort5(int a[],int n){ int i; int j; if (n<=1) return; for (i=1;i<n;i++) j=0; if (a[i]<a[0]) swap(++j,i,a); swap(0,j,a); qsort5(a,j); qsort(a+j+1,n-j-1); } int main() { return 0; } void swap(int i,int j,int a[]) { int t=a[i]; a[i]=a[j]; a[j]=t; } i have problem 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(13) : error C2780: 'void std::swap(std::basic_string<_Elem,_Traits,_Alloc> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\xstring(2203) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(13) : error C2780: 'void std::swap(std::pair<_Ty1,_Ty2> &,std::pair<_Ty1,_Ty2> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(76) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(13) : error C2780: 'void std::swap(_Ty &,_Ty &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(16) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(14) : error C2780: 'void std::swap(std::basic_string<_Elem,_Traits,_Alloc> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\xstring(2203) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(14) : error C2780: 'void std::swap(std::pair<_Ty1,_Ty2> &,std::pair<_Ty1,_Ty2> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(76) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(14) : error C2780: 'void std::swap(_Ty &,_Ty &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(16) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(16) : error C2661: 'qsort' : no overloaded function takes 2 arguments 1>Build log was saved at "file://c:\Users\dato\Documents\Visual Studio 2008\Projects\qsort5\qsort5\Debug\BuildLog.htm" please help

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• Control XML serialization of Dictionary<K, T>

  - by Luca

  I'm investigating about XML serialization, and since I use lot of dictionary, I would like to serialize them as well. I found the following solution for that (I'm quite proud of it! :) ). [XmlInclude(typeof(Foo))] public class XmlDictionary<TKey, TValue> { /// <summary> /// Key/value pair. /// </summary> public struct DictionaryItem { /// <summary> /// Dictionary item key. /// </summary> public TKey Key; /// <summary> /// Dictionary item value. /// </summary> public TValue Value; } /// <summary> /// Dictionary items. /// </summary> public DictionaryItem[] Items { get { List<DictionaryItem> items = new List<DictionaryItem>(ItemsDictionary.Count); foreach (KeyValuePair<TKey, TValue> pair in ItemsDictionary) { DictionaryItem item; item.Key = pair.Key; item.Value = pair.Value; items.Add(item); } return (items.ToArray()); } set { ItemsDictionary = new Dictionary<TKey,TValue>(); foreach (DictionaryItem item in value) ItemsDictionary.Add(item.Key, item.Value); } } /// <summary> /// Indexer base on dictionary key. /// </summary> /// <param name="key"></param> /// <returns></returns> public TValue this[TKey key] { get { return (ItemsDictionary[key]); } set { Debug.Assert(value != null); ItemsDictionary[key] = value; } } /// <summary> /// Delegate for get key from a dictionary value. /// </summary> /// <param name="value"></param> /// <returns></returns> public delegate TKey GetItemKeyDelegate(TValue value); /// <summary> /// Add a range of values automatically determining the associated keys. /// </summary> /// <param name="values"></param> /// <param name="keygen"></param> public void AddRange(IEnumerable<TValue> values, GetItemKeyDelegate keygen) { foreach (TValue v in values) ItemsDictionary.Add(keygen(v), v); } /// <summary> /// Items dictionary. /// </summary> [XmlIgnore] public Dictionary<TKey, TValue> ItemsDictionary = new Dictionary<TKey,TValue>(); } The classes deriving from this class are serialized in the following way: <FooDictionary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Items> <DictionaryItemOfInt32Foo> <Key/> <Value/> </DictionaryItemOfInt32XmlProcess> <Items> This give me a good solution, but: How can I control the name of the element DictionaryItemOfInt32Foo What happens if I define a Dictionary<FooInt32, Int32> and I have the classes Foo and FooInt32? Is it possible to optimize the class above? THank you very much!

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• Question about my sorting algorithm in C++

  - by davit-datuashvili

  i have following code in c++ #include <iostream> using namespace std; void qsort5(int a[],int n){ int i; int j; if (n<=1) return; for (i=1;i<n;i++) j=0; if (a[i]<a[0]) swap(++j,i,a); swap(0,j,a); qsort5(a,j); qsort(a+j+1,n-j-1); } int main() { return 0; } void swap(int i,int j,int a[]) { int t=a[i]; a[i]=a[j]; a[j]=t; } i have problem 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(13) : error C2780: 'void std::swap(std::basic_string<_Elem,_Traits,_Alloc> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\xstring(2203) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(13) : error C2780: 'void std::swap(std::pair<_Ty1,_Ty2> &,std::pair<_Ty1,_Ty2> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(76) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(13) : error C2780: 'void std::swap(_Ty &,_Ty &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(16) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(14) : error C2780: 'void std::swap(std::basic_string<_Elem,_Traits,_Alloc> &,std::basic_string<_Elem,_Traits,_Alloc> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\xstring(2203) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(14) : error C2780: 'void std::swap(std::pair<_Ty1,_Ty2> &,std::pair<_Ty1,_Ty2> &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(76) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(14) : error C2780: 'void std::swap(_Ty &,_Ty &)' : expects 2 arguments - 3 provided 1> c:\program files\microsoft visual studio 9.0\vc\include\utility(16) : see declaration of 'std::swap' 1>c:\users\dato\documents\visual studio 2008\projects\qsort5\qsort5\qsort5.cpp(16) : error C2661: 'qsort' : no overloaded function takes 2 arguments 1>Build log was saved at "file://c:\Users\dato\Documents\Visual Studio 2008\Projects\qsort5\qsort5\Debug\BuildLog.htm" please help

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• Control XML serialization of generic types

  - by Luca

  I'm investigating about XML serialization, and since I use lot of dictionary, I would like to serialize them as well. I found the following solution for that (I'm quite proud of it! :) ). [XmlInclude(typeof(Foo))] public class XmlDictionary<TKey, TValue> { /// <summary> /// Key/value pair. /// </summary> public struct DictionaryItem { /// <summary> /// Dictionary item key. /// </summary> public TKey Key; /// <summary> /// Dictionary item value. /// </summary> public TValue Value; } /// <summary> /// Dictionary items. /// </summary> public DictionaryItem[] Items { get { List<DictionaryItem> items = new List<DictionaryItem>(ItemsDictionary.Count); foreach (KeyValuePair<TKey, TValue> pair in ItemsDictionary) { DictionaryItem item; item.Key = pair.Key; item.Value = pair.Value; items.Add(item); } return (items.ToArray()); } set { ItemsDictionary = new Dictionary<TKey,TValue>(); foreach (DictionaryItem item in value) ItemsDictionary.Add(item.Key, item.Value); } } /// <summary> /// Indexer base on dictionary key. /// </summary> /// <param name="key"></param> /// <returns></returns> public TValue this[TKey key] { get { return (ItemsDictionary[key]); } set { Debug.Assert(value != null); ItemsDictionary[key] = value; } } /// <summary> /// Delegate for get key from a dictionary value. /// </summary> /// <param name="value"></param> /// <returns></returns> public delegate TKey GetItemKeyDelegate(TValue value); /// <summary> /// Add a range of values automatically determining the associated keys. /// </summary> /// <param name="values"></param> /// <param name="keygen"></param> public void AddRange(IEnumerable<TValue> values, GetItemKeyDelegate keygen) { foreach (TValue v in values) ItemsDictionary.Add(keygen(v), v); } /// <summary> /// Items dictionary. /// </summary> [XmlIgnore] public Dictionary<TKey, TValue> ItemsDictionary = new Dictionary<TKey,TValue>(); } The classes deriving from this class are serialized in the following way: <XmlProcessList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Items> <DictionaryItemOfInt32Foo> <Key/> <Value/> </DictionaryItemOfInt32XmlProcess> <Items> This give me a good solution, but: How can I control the name of the element DictionaryItemOfInt32Foo What happens if I define a Dictionary<FooInt32, Int32> and I have the classes Foo and FooInt32? Is it possible to optimize the class above? THank you very much!

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• Unit testing internal methods in a strongly named assembly/project

  - by Rohit Gupta

  If you need create Unit tests for internal methods within a assembly in Visual Studio 2005 or greater, then we need to add an entry in the AssemblyInfo.cs file of the assembly for which you are creating the units tests for. For e.g. if you need to create tests for a assembly named FincadFunctions.dll & this assembly contains internal/friend methods within which need to write unit tests for then we add a entry in the FincadFunctions.dll’s AssemblyInfo.cs file like so : 1: [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("FincadFunctionsTests")] where FincadFunctionsTests is the name of the Unit Test project which contains the Unit Tests. However if the FincadFunctions.dll is a strongly named assembly then you will the following error when compiling the FincadFunctions.dll assembly :      Friend assembly reference “FincadFunctionsTests” is invalid. Strong-name assemblies must specify a public key in their InternalsVisibleTo declarations. Thus to add a public key token to InternalsVisibleTo Declarations do the following: You need the .snk file that was used to strong-name the FincadFunctions.dll assembly. You can extract the public key from this .snk with the sn.exe tool from the .NET SDK. First we extract just the public key from the key pair (.snk) file into another .snk file. sn -p test.snk test.pub Then we ask for the value of that public key (note we need the long hex key not the short public key token): sn -tp test.pub We end up getting a super LONG string of hex, but that's just what we want, the public key value of this key pair. We add it to the strongly named project "FincadFunctions.dll" that we want to expose our internals from. Before what looked like: 1: [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("FincadFunctionsTests")] Now looks like. 1: [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("FincadFunctionsTests, 2: PublicKey=002400000480000094000000060200000024000052534131000400000100010011fdf2e48bb")] And we're done. hope this helps

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• Meaningful concise method naming guidelines

  - by Sam

  Recently I started releasing an open source project, while I was the only user of the library I did not care about the names, but know I want to assign clever names to each methods to make it easier to learn, but I also need to use concise names so they are easy to write as well. I was thinking about some guidelines about the naming, I am aware of lots of guidelines that only care about letters casing or some simple notes. Here, I am looking after guidelines for meaningful concise naming. For example, this could be part of the guidelines I am looking after: Use Add when an existing item is going to be added to a target, Use Create when a new item is being created and added to a target. Use Remove when an existing item is going to be removed from a target, Use delete when an item is going to be removed permanently. Pair AddXXX methods with RemoveXXX and Pair CreateXXX methods with DeleteXXX methods, but do not mix them. The above guidance may be intuitive for native English speakers, but for me that English is my second language I need to be told about things like this.

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• Gödel, Escher, Bach - Gödel's string

  - by Brad Urani

  In the book Gödel, Escher, Bach: An Eternal Golden Braid by Douglas Hofstadter, the author gives us a representation of the precursor to Gödel's string (Gödel's string's uncle) as: ~Ea,a': (I don't have the book in front of me but I think that's right). All that remains to get Gödel's string is to plug the Gödel number for this string into the free variable a''. What I don't understand is how to get the Gödel number for the functions PROOF-PAIR and ARITHMOQUINE. I understand how to write these functions in a programming language like FlooP (from the book) and could even write them myself in C# or Java, but the scheme that Hofstadter defines for Gödel numbering only applies to TNT (which is just his own syntax for natural number theory) and I don't see any way to write a procedure in TNT since it doesn't have any loops, variable assignments etc. Am I missing the point? Perhaps Gödel's string is not something that can actually be printed, but rather a theoretical string that need not actually be defined? I thought it would be neat to write a computer program that actually prints Gödel's string, or Gödel's string encoded by Gödel numbering (yes, I realize it would have a gazillion digits) but it seems like doing so requires some kind of procedural language and a Gödel numbering system for that procedural language that isn't included in the book. Of course once you had that, you could write a program that plugs random numbers into variable "a" and run procedure PROOF-PAIR on it to test for theoromhood of Gödel's string. If you let it run for a trillion years you might find a derivation that proves Gödel's string.

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• How to represent a graph with multiple edges allowed between nodes and edges that can selectively disappear

  - by Pops

  I'm trying to figure out what sort of data structure to use for modeling some hypothetical, idealized network usage. In my scenario, a number of users who are hostile to each other are all trying to form networks of computers where all potential connections are known. The computers that one user needs to connect may not be the same as the ones another user needs to connect, though; user 1 might need to connect computers A, B and D while user 2 might need to connect computers B, C and E. Image generated with the help of NCTM Graph Creator I think the core of this is going to be an undirected cyclic graph, with nodes representing computers and edges representing Ethernet cables. However, due to the nature of the scenario, there are a few uncommon features that rule out adjacency lists and adjacency matrices (at least, without non-trivial modifications): edges can become restricted-use; that is, if one user acquires a given network connection, no other user may use that connection in the example, the green user cannot possibly connect to computer A, but the red user has connected B to E despite not having a direct link between them in some cases, a given pair of nodes will be connected by more than one edge in the example, there are two independent cables running from D to E, so the green and blue users were both able to connect those machines directly; however, red can no longer make such a connection if two computers are connected by more than one cable, each user may own no more than one of those cables I'll need to do several operations on this graph, such as: determining whether any particular pair of computers is connected for a given user identifying the optimal path for a given user to connect target computers identifying the highest-latency computer connection for a given user (i.e. longest path without branching) My first thought was to simply create a collection of all of the edges, but that's terrible for searching. The best thing I can think to do now is to modify an adjacency list so that each item in the list contains not only the edge length but also its cost and current owner. Is this a sensible approach? Assuming space is not a concern, would it be reasonable to create multiple copies of the graph (one for each user) rather than a single graph?

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• Ubuntu 12.04 + Bluetooth problems with maintaining connection

  - by ifndefx

  I have an Apple Wireless Mouse, Apple Wireless Keyboard, Apple Wireless Trackpad, and a pair of headphones. All of these connect to the computer via a Bluetooth dongle. After several hours I've managed to get the devices paired (all except the headphones) with the computer. However, I'm facing a problem where a connection can't be maintained even with one device. I first started with the gnome bluetooth applet, this couldn't even pick up devices, so I installed blueman, and this at least detected the devices but it couldn't keep the connection going. Then i read somewhere to get hidd installed and use the command line using the mac address of the device (which I got from blueman) and this worked really well, the connection was stable, but there's still a couple of issues that I need help with: If I am to use hidd I need to execute this via terminal, which means for the keyboard and the mouse I need to have two of each. This doesn't make sense. I need the bluetooth daemon to have started with the devices picked up a lot earlier, and especially at grub bootloader. The mouse and the trackpad both work if i use hidd, however, I cannot get the right mouse to work nor the scroll wheel to work. The headphones don't work period, they don't work with any of the bluetooth applets, and with hidd either. When I use blueman aplet, it attempts to pair and states 'Authentication Rejected". The headphone is Phillips SHB9100. If someone can help me with this, I would be grateful.

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• Can I set up samba so it automatically allows all the local usernames and passwords?

  - by dialer

  I have set up samba like this (this is the complete smb.conf): [global] log file = /var/log/samba/log log level = 2 security = user [homes] browsable = false read only = no valid users = %S I'd like to enable every user on server to access their home directories, but for some unknown reason only my 'administrator' account can do so. (I have done that with ftp before, but now smb is also needed). When I try to smbclient -L localhost -U [user], I get NT_STATUS_LOGON_FAILURE, except with the administrator (which is the user created during the ubuntu installation, not root). The samba log file says NT_STATUS_NO_SUCH_USER: [2012/04/04 20:26:02.081454, 2] smbd/reply.c:554(reply_special) netbios connect: name1=LOCALHOST 0x20 name2=DIALER-X 0x0 [2012/04/04 20:26:02.081733, 2] smbd/reply.c:565(reply_special) netbios connect: local=localhost remote=dialer-x, name type = 0 [2012/04/04 20:26:02.087200, 2] auth/auth.c:314(check_ntlm_password) check_ntlm_password: Authentication for user [public] - [public] FAILED with error NT_STATUS_NO_SUCH_USER I suspect that I have to manually create samba users, but the man pages state that If the client has passed a username/password pair and that username/password pair is validated by the UNIX system's password programs, the connection is made as that username. To me that sounds like as long as the provided username/password is a valid login on the server, it should work. Am I missing something totally obvious? I don't want / can't afford to manually update the samba users and passwords to match the server's. 11.10

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• How to swap or move 2 string in Array? [on hold]

  - by Wisnu Khazefa

  I have a need to convert .csv file to .dat file. In my problem, there are value pairs, with a name attribute (called Fund) and corresponding numeric value. If the input file has a pair whose value is 0, then that pair (Fund and value) is dropped. The output file should have only those pairs (Fund and value) where the value is non-zero. Here is the prototype of my code. public static void Check_Fund(){ String header = "Text1,Text2,Text3,FUND_UALFND_1,FUND_UALPRC_1,FUND_UALFND_2," +"FUND_UALPRC_2,FUND_UALFND_3,FUND_UALPRC_3,FUND_UALFND_4,FUND_UALPRC_4,FUND_UALFND_5,FUND_UALPRC_5,Text4,Text5,Text6,Text7"; String text = "ABC;CDE;EFG;PRMF;0;PRFF;50;PREF;0;PRCF;0;PRMP;50;TAHU;;BAKWAN;SINGKONG"; String[] head; String[] value; String showText = ""; head = header.split(","); value = text.split(";"); String regex = "\\d+"; String[] fund = {"PREF","PRMF","PRFF","PRCF","PRMP","PDFF","PSEF","PSCB","PSMF","PRGC","PREP"}; for(int i = 0; i < value.length; i++){ for(int j=0;j < fund.length; j++){ if(value[i].equals(fund[j]) && value[i+1].matches(regex)){ if(value[i+1].equals("0")){ value[i] = ""; value[i+1] = ""; } } } showText = showText + head[i] +":" + value[i] + System.lineSeparator(); } System.out.println(showText ); } Expected Result Input: FUND_UALFND_1:PRMF FUND_UALPRC_1:0 FUND_UALFND_2:PRFF FUND_UALPRC_2:50 FUND_UALFND_3:PREF FUND_UALPRC_3:0 FUND_UALFND_4:PRCF FUND_UALPRC_4:0 FUND_UALFND_5:PRMP FUND_UALPRC_5:50 Output: FUND_UALFND_1:PRFF FUND_UALPRC_1:50 FUND_UALFND_2:PRMP FUND_UALPRC_2:50 FUND_UALFND_0: FUND_UALPRC_0: FUND_UALFND_0: FUND_UALPRC_0: FUND_UALFND_0: FUND_UALPRC_0:

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• Adding <span> tags to all text nodes between custom self closing tags.

  - by Rachel

  I have a pair of custom self closing tags s1 and s2 defined in namespace x in my xhtml. For each tag pair s1, s2 having the same id, I want to add span tags to all the text nodes between them. Each s1, s2 tag pair have a unique id. The s1 tag has an attribute 'styleName' which needs to be copied as the class name for the span tags populated for the s1,s2 pair. Within a s1, s2 tag pair, other s1, s2 tags can occur. It is the id attribute of the tags s1 and s2 that help us to find the postion from where we need to start populating the span(for text nodes alone) and the end where we need to stop. In case of common text nodes that is part of the multiple s1, s2 pairs then the span tags needs to be opened and closed appropirately as shown in the sample below. I am not specific with the format of the id populated for the span tag. As long as it is unique it is fine. Can we achieve this kind of a solution using XSL. I am looking for a XSL based solution for the same. I am using Saxon java processor for XSL. I am trying to achieve this using XSL 2.0. Please share your ideas on this. EDIT: I have edited my sample input and output to make my question more clear. Sample input: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://sample.org"> <head> <title>This is my title</title> </head> <body> <h1 align="center">This <x:s1 id="1" styleName="name_1"/>is my <x:s2 id="1" />heading</h1> <p> Sample content <x:s1 id="2" styleName="name_2"/> Some text here. </p> <p> Here you <x:s2 id="2" />go. </p> <p> <x:s1 id="3" styleName="name_3"/>This <x:s1 id="4" styleName="name_4"/>is just a simple text <x:s2 id="4" />Some text here.<x:s2 id="3" /> Some content here. </p> <p> Use this <x:s1 id="5" styleName="name_5"/>space. </p> <p> Indroducing <x:s1 id="6" styleName="name_6"/> more information. </p> <p> Can add some <x:s2 id="6" />more content here. </p> <p> Sample content <x:s2 id="5" />Some text here. Some content here. </p> <p> <x:s1 id="7" styleName="name_7"/>This is a complex data. <x:s1 id="8" styleName="name_8"/>Framing a long sentence to <x:s2 id="7" />accomodate all possible <x:s2 id="8" />scenarios. </p> <p> <x:s1 id="9" styleName="name_9"/>More data can be <x:s1 id="10" styleName="name_10"/>added here. </p> <p> Trying to include here. </p> <p> Modifying <x:s2 id="9" />content <x:s2 id="10" />here. </p> </body> </html> Sample output: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://sample.org"> <head> <title>This is my title</title> </head> <body> <h1 align="center">This <span id="1_1" class="name_1">is my </span>heading</h1> <p> Sample content <span id="2_1" class="name_2"> Some text here.</span> </p> <p> <span id="2_2" class="name_2">Here you </span>go. </p> <p> <span id="3_1" class="name_3">This <span id="4_1" class="name_4">is just a simple text </span>Some text here.</span> Some content here. </p> <p> Use this <span id="5_1" class="name_5">space.</span> </p> <p> <span id="5_2" class="name_5">Indroducing <span id="6_1" class="name_6"> more information.</span></span> </p> <p> <span id="5_3" class="name_5"><span id="6_2" class="name_6">Can add some </span>more content here.</span> </p> <p> <span id="5_4" class="name_5">Sample content </span>Some text here. Some content here. </p> <p> <span id="7_1" class="name_7">This is a complex data.</span> <span id="8_1" class="name_8"><span id="7_2" class="name_7">Framing a long sentence to </span></span><span id="8_2" class="name_8">accomodate all possible </span>scenarios. </p> <p> <span id="9_1" class="name_9">More data can be <span><span id="10_1" class="name_10"><span id="9_2" class="name_9">added here.</span></span> </p> <p> <span id=10_2 class="name_10"><span id="9_3" class="name_9">Trying to include here.</span></span> </p> <p> <span id=10_3 class="name_10"><span id="9_4" class="name_9">Modifying</span></span><span id="10_4" class="name_10">content </span>here. </p> </body> </html> Thanks.

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• Adding <span> tags to all text nodes between custom self closing tags.

  - by Rachel

  I have a pair of custom self closing tags s1 and s2 defined in namespace x in my xhtml. For each tag pair s1, s2 having the same id, I want to add span tags to all the text nodes between them. Each s1, s2 tag pair have a unique id. The s1 tag has an attribute 'styleName' which needs to be copied as the class name for the span tags populated for the s1,s2 pair. Within a s1, s2 tag pair, other s1, s2 tags can occur. It is the id attribute of the tags s1 and s2 that help us to find the postion from where we need to start populating the span(for text nodes alone) and the end where we need to stop. In case of common text nodes that is part of the multiple s1, s2 pairs then the span tags needs to be opened and closed appropirately as shown in the sample below. I am not specific with the format of the id populated for the span tag. Along as it is unique it is fine. Can we achive this kind of a solution using XSL. I am using Saxon processor. Sample input: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://sample.org"> <head> <title>This is my title</title> </head> <body> <h1 align="center">This <x:s1 id="1" styleName="name_1"/>is my <x:s2 id="1" />heading</h1> <p> Sample content <x:s1 id="2" styleName="name_2"/> Some text here. </p> <p> Here you <x:s2 id="2" />go. </p> <p> <x:s1 id="3" styleName="name_3"/>This <x:s1 id="4" styleName="name_4"/>is just a simple text <x:s2 id="4" />Some text here.<x:s2 id="3" /> Some content here. </p> <p> Use this <x:s1 id="5" styleName="name_5"/>space. </p> <p> Indroducing <x:s1 id="6" styleName="name_6"/> more information. </p> <p> Can add some <x:s2 id="6" />more content here. </p> <p> Sample content <x:s2 id="5" />Some text here. Some content here. </p> <p> <x:s1 id="7" styleName="name_7"/>This is a complex data. <x:s1 id="8" styleName="name_8"/>Framing a long sentence to <x:s2 id="7" />accomodate all possible <x:s2 id="8" />scenarios. </p> <p> <x:s1 id="9" styleName="name_9"/>More data can be <x:s1 id="10" styleName="name_10"/>added here. </p> <p> Trying to include here. </p> <p> Modifying <x:s2 id="9" />content <x:s2 id="10" />here. </p> </body> </html> Sample output: <html xmlns="http://www.w3.org/1999/xhtml" xmlns:x="http://sample.org"> <head> <title>This is my title</title> </head> <body> <h1 align="center">This <span id="1_1" class="name_1">is my </span>heading</h1> <p> Sample content <span id="2_1" class="name_2"> Some text here.</span> </p> <p> <span id="2_2" class="name_2">Here you </span>go. </p> <p> <span id="3_1" class="name_3">This <span id="4_1" class="name_4">is just a simple text </span>Some text here.</span> Some content here. </p> <p> Use this <span id="5_1" class="name_5">space.</span> </p> <p> <span id="5_2" class="name_5">Indroducing <span id="6_1" class="name_6"> more information.</span></span> </p> <p> <span id="5_3" class="name_5"><span id="6_2" class="name_6">Can add some </span>more content here.</span> </p> <p> <span id="5_4" class="name_5">Sample content </span>Some text here. Some content here. </p> <p> <span id="7_1" class="name_7">This is a complex data.</span> <span id="8_1" class="name_8"><span id="7_2" class="name_7">Framing a long sentence to </span></span><span id="8_2" class="name_8">accomodate all possible </span>scenarios. </p> <p> <span id="9_1" class="name_9">More data can be <span><span id="10_1" class="name_10"><span id="9_2" class="name_9">added here.</span></span> </p> <p> <span id=10_2 class="name_10"><span id="9_3" class="name_9">Trying to include here.</span></span> </p> <p> <span id=10_3 class="name_10"><span id="9_4" class="name_9">Modifying</span></span><span id="10_4" class="name_10">content </span>here. </p> </body> </html> Thanks.

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• using BOOST_FOREACH with std::map

  - by kmote

  I'd like to iterate over a std::map using BOOST_FOREACH and edit the values. I can't quite get it. typedef std::pair<int, int> IdSizePair_t; std::map<int,int> mmap; mmap[1] = 1; mmap[2] = 2; mmap[3] = 3; BOOST_FOREACH( IdSizePair_t i, mmap ) i.second++; // mmap should contain {2,3,4} here Of course this doesn't change anything because I'm not iterating by reference. So I substitute this line instead (as per the example in the Boost docs): BOOST_FOREACH( IdSizePair_t &i, mmap ) and I get the compiler error: error C2440: 'initializing' : cannot convert from 'std::pair<_Ty1,_Ty2>' to 'IdSizePair_t &' with [ _Ty1=const int, _Ty2=int ] Any suggestions?

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• HTML5 web storage: can different websites overwrite each other’s data on a user’s computer?

  - by Deepak Mahalingam

  I have a few questions regarding the concept of HTML5 storage. I went through the w3c specification, books and tutorials on the same, but still I am a bit unclear about certain concepts: Assume that I access Website A. Some JavaScript runs in my browser that sets a key value pair, say ('username','deepak'). Then I access Website B which also adds a key,value pair in the localstorage as ('username','mahalingam'). How will they both be differentiated? Will Website B override the value set by website A in my localstorage? How can we ensure that a website would not erase all of my localstorage?

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