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  • Can reprepro accept a new version of a package into the repository?

    - by kai
    I have installed a package into my own debian package repository like so: $ sudo reprepro -b /var/packages/ubuntu includedeb maverick my-package_0.8-0_all.deb my-package_0.8-0_all.deb: component guessed as 'main' Exporting indices... I have installed my package on a few machines using apt-get install. I have now added new features to my software and would like to add a new minor version of my package to the repository so that I may update my machines using apt-get upgrade. I try to do this like so: $ sudo reprepro -b /var/packages/ubuntu includedeb maverick my-package_0.9-0_all.deb my-package_0.9-0_all.deb: component guessed as 'main' Skipping inclusion of 'my-package' '1.0-0' in 'maverick|main|i386', as it has already '1.0-0'. Skipping inclusion of 'my-package' '1.0-0' in 'maverick|main|amd64', as it has already '1.0-0'. It looks like I need to tell reprepro that this is a new version of the same package but I have no idea how to do this. I have read the reprepro man page several times and searched on the net for a couple of hours but I have not found any answers. Am I missing something? Many thanks.

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  • How to configure amavisd-new for only scanning on particular senders/servers?

    - by mailq
    I'd like to know how to configure amavisd-new to only scan for Spam on particular clients (IPs, CIDRs or hostnames) or alternatively sender's email domain. I know that it is possible to do it on a recipient's mail address but not on how to do it for the sender's mail address. It is even possible to do it on a recipient's IP address with policy banks. But my approach should be to be independent of recipient and only relay on the sender. What I want to accomplish is to only scan mails originating from Yahoo, Google, Hotmail and the other big senders. So it is easier to configure which senders should be observed than the ones that shouldn't. I known that it is easier to achieve on the MTA side, but that is not part of the question because I already go a solution on the MTA side. I want to do it on amavisd-new. And it doesn't help to know how to put senders on a whitelist, as this still means that the mail goes through all the scanning but then gets a high negative score. The mail shouldn't be scanned at all unless sent by the big players. So which parameters in amavisd-new is the right one to enable scanning for particular senders and only for these?

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  • Is the new windows 8 sdk usable with visual c++ express 2010 on windows 7?

    - by JohnB
    This is inspired by and related to Is the June 2010 DX SDK really the latest? asked recently but it's a different question. I won't likely be purchasing the full visual studio 2012 for C++, I intend to use the free visual c++ express 2012 that targets desktop applications when it is released so for now I'm using visual c++ express 2010 running on windows 7. The latest directx11 sdk is the one included in the windows 8 SDK now, it's not a separate release any more. So my question is, can I use the windows 8 SDK to build directx11 programs that work on windows 7 using visual studio express 2010 running on windows 7. Or do I need to stick to the final DirectX SDK release for now?

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  • What are the pros (and cons) of using “Sign in with Twitter/Facebook” for a new website?

    - by Paul D. Waite
    Myself and a friend are looking to launch a little forum site. I’m considering using the “Sign in with Facebook/Twitter” APIs, possibly exclusively (a la e.g. Lanyrd), for user login. I haven’t used either of these before, nor run a site with user logins at all. What are the pros (and cons) of these APIs? Specifically: What benefits do I get as a developer from using them? What drawbacks are there? Do end users actually like/dislike them? Have you experienced any technical/logistical issues with these APIs specifically? Here are the pros and cons I’ve got so far: Pros More convenient for the user (“register” with two clicks, sign in with one) Possibly no need to maintain our own login system  Cons No control over our login process Exclude Facebook/Twitter users who are worried about us having some sort of access to their accounts Users’ accounts on our site are compromised if their Facebook/Twitter accounts are compromised. And if we don’t maintain our own alternative login system: Dependency on Facebook/Twitter for our login system Exclude non-Facebook/non-Twitter users from our site

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  • How to solve "GPU Lockup - switching to software fbcon" on new install of 12.10-desktop-amd64

    - by Curtis
    Error occurs during startup of Ubuntu Installation. Sometimes I'll get to the Welcome screen just like this, the screen will just glitch out, or will simply freeze during the loading icon. nvidia GTS 250 Intel Core i7 920 9 GB Memory I was able to install 12.04.1, but after performing upgrade to 12.10 it get the same problem on startup; glitches in graphics, missing content etc. Also noticed after the upgrade, I'm no longer able to connect to internet; neither ethernet or wifi.

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  • Ur/Web new purely functional language for web programming?

    - by Phuc Nguyen
    I came across the Ur/Web project during my search for web frameworks for Haskell-like languages. It looks like a very interesting project done by one person. Basically, it is a domain-specific purely functional language for web programming, taking the best of ML and Haskell. The syntax is ML, but there are type classes and monad from Haskell, and it's strictly evaluated. Server-side is compiled to native code, client to Javascript. See the slides and FAQ page for other advertised advantages. Looking at the demos and their source code, I think the project is very promising. The latest version is something 20110123, so it seems to be under active development at this time. My question: Has anybody here had any further experience with it? Are there problems/annoyances compared to Haskell, apart from ML's slightly more verbose syntax? Even if it's not well known yet, I hope more people will know of it. OMG this looks very cool to me. I don't want this project to die!!

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  • How should I update my name server after I installed a new dedicated server?

    - by Jim Thio
    Say I got a dedi. The IP is 123.123.123.123 Now I got domain name domainname.com that will be the "main" domain name for that server. Should I? Set the name server of the domainname.com to ns1.domainname.com and ns2.domainname.com Add child nameserver ns1.domainname.com and ns2.domainname.com to point to that exact IP. or Should I? Point the name server to my registrar name server. Set an A address of the name server to point to my IP. Which one is right? Obviously I want ns1.domainname.com and ns2.domainname.com to point to my IP so I can then point hundreds of domains to that IP. But how exactly I should do that? Specifically I simply use cpanel. Centosh with cpanel.

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  • What are the pros and cons of using “Sign in with Twitter/Facebook” for a new website?

    - by Paul D. Waite
    Myself and a friend are looking to launch a little forum site. I’m considering using the “Sign in with Facebook/Twitter” APIs, possibly exclusively, for user login.I haven’t used either of these before, nor run a site with user logins at all. What are the pros and cons of these APIs? Specifically: Is the idea of using them, and/or using them exclusively (i.e. having no login system other than one or both of these), any good? What benefits do I get as a developer from using them? Do end users actually like/dislike them? Have you experienced any technical/logistical issues with these APIs specifically? Here are the pros and cons I’ve got so far: Pros More convenient for the user (“register” with two clicks, sign in with one) Possibly no need to maintain our own login system  Cons No control over our login process Exclude non-Facebook/non-Twitter users (if we don’t maintain our own login system) Exclude Facebook/Twitter users who are worried about us having some sort of access to their accounts Users’ accounts on our site are compromised if their Facebook/Twitter accounts are compromised.

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  • What are the pros (and cons) of using “Sign in with Twitter/Facebook” for a new website?

    - by Paul D. Waite
    Myself and a friend are looking to launch a little forum site. I’m considering using the “Sign in with Facebook/Twitter” APIs, possibly exclusively (a la e.g. Lanyrd), for user login. I haven’t used either of these before, nor run a site with user logins at all. What are the pros (and cons) of these APIs? Specifically: What benefits do I get as a developer from using them? What drawbacks are there? Do end users actually like/dislike them? Have you experienced any technical/logistical issues with these APIs specifically? Here are the pros and cons I’ve got so far: Pros More convenient for the user (“register” with two clicks, sign in with one) Possibly no need to maintain our own login system  Cons No control over our login process Exclude Facebook/Twitter users who are worried about us having some sort of access to their accounts Users’ accounts on our site are compromised if their Facebook/Twitter accounts are compromised. And if we don’t maintain our own alternative login system: Dependency on Facebook/Twitter for our login system Exclude non-Facebook/non-Twitter users from our site

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  • In C what is the difference between null and a new line character? Guys help please [migrated]

    - by Siddhartha Gurjala
    Whats the conceptual difference and similarity between NULL and a newline character i.e between '\0' and '\n' Explain their relevance for both integer and character data type variables and arrays? For reference here is an example snippets of a program to read and write a 2d char array PROGRAM CODE 1: int main() { char sort(),stuname(),swap(),(*p)(),(*q)(); int n; p=stuname; q=swap; printf("Let the number of students in the class be \n"); scanf("%d",&n); fflush(stdin); sort(p,q,n); return 0; } char sort(p1,q1,n1) char (*p1)(),(*q1)(); int n1; { (*p1)(n1); (*q1)(); } char stuname(int nos) // number of students { char name[nos][256]; int i,j; printf("Reading names of %d students started--->\n\n",nos); name[0][0]='k'; //initialising as non NULL charecter for(i=0;i<nos;i++) // nos=number of students { printf("Give name of student %d\n",i); for(j=0;j<256;j++) { scanf("%c",&name[i][j]); if(name[i][j]=='\n') { name[i][j]='\0'; j=257; } } } printf("\n\nWriting student names:\n\n"); for(i=0;i<nos;i++) { for(j=0;j<256&&name[i][j]!='\0';j++) { printf("%c",name[i][j]); } printf("\n"); } } char swap() { printf("Will swap shortly after getting clarity on scanf and %c"); } The above code is working good where as the same logic given with slight diff is not giving appropriate output. Here's the code PROGRAM CODE 2: #include<stdio.h> int main() { char sort(),stuname(),swap(),(*p)(),(*q)(); int n; p=stuname; q=swap; printf("Let the number of students in the class be \n"); scanf("%d",&n); fflush(stdin); sort(p,q,n); return 0; } char sort(p1,q1,n1) char (*p1)(),(*q1)(); int n1; { (*p1)(n1); (*q1)(); } char stuname(int nos) // number of students { char name[nos][256]; int i,j; printf("Reading names of %d students started--->\n\n",nos); name[0][0]='k'; //initialising as non NULL charecter for(i=0;i<nos;i++) // nos=number of students { printf("Give name of student %d\n",i); ***for(j=0;j<256&&name[i][j]!='\0';j++)*** { scanf("%c",&name[i][j]); /*if(name[i][j]=='\n') { name[i][j]='\0'; j=257; }*/ } } printf("\n\nWriting student names:\n\n"); for(i=0;i<nos;i++) { for(j=0;j<256&&name[i][j]!='\0';j++) { printf("%c",name[i][j]); } printf("\n"); } } char swap() { printf("Will swap shortly after getting clarity on scanf and %c"); } Here one more instance of same program not giving proper output given below PROGRAM CODE 3: #include<stdio.h> int main() { char sort(),stuname(),swap(),(*p)(),(*q)(); int n; p=stuname; q=swap; printf("Let the number of students in the class be \n"); scanf("%d",&n); fflush(stdin); sort(p,q,n); return 0; } char sort(p1,q1,n1) char (*p1)(),(*q1)(); int n1; { (*p1)(n1); (*q1)(); } char stuname(int nos) // number of students { char name[nos][256]; int i,j; printf("Reading names of %d students started--->\n\n",nos); name[0][0]='k'; //initialising as non NULL charecter for(i=0;i<nos;i++) // nos=number of students { printf("Give name of student %d\n",i); ***for(j=0;j<256&&name[i][j]!='\n';j++)*** { scanf("%c",&name[i][j]); /*if(name[i][j]=='\n') { name[i][j]='\0'; j=257; }*/ } name[i][i]='\0'; } printf("\n\nWriting student names:\n\n"); for(i=0;i<nos;i++) { for(j=0;j<256&&name[i][j]!='\0';j++) { printf("%c",name[i][j]); } printf("\n"); } } char swap() { printf("Will swap shortly after getting clarity on scanf and %c"); } Why the program code 2 and program code 3 are not working as expected as that of the code 1?

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  • Professional iOS Development as a Backup Career [closed]

    - by New Coder
    I am a research chemist by day and I am a self-taught hobbyist iOS programmer by night. I am in the process of developing a moderately complex iOS app and hope to launch it within a month or two. I love everything about iOS development (and programming in general). I want to know if iOS development could become a backup career for me if I loose my job. My question: Let's say I had a couple of apps in the app store, a solid foundation in objective-C and the apple frameworks and basic knowledge on network integrated apps. Without a formal CS degree, what other experience/knowledge would I need to land a job as a professional iOS developer? Forgive me if this question is out of bounds for this forum. If it is, suggestions on where to post such a question would be appreciated.

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  • What kind of knowledge do you need to invent a new programming language?

    - by systempuntoout
    I just finished to read "Coders at works", a brilliant book by Peter Seibel with 15 interviews to some of the most interesting computer programmers alive today. Well, many of the interviewees have (co)invented\implemented a new programming language. Some examples: Joe Armstrong: Inventor of Erlang L. Peter Deutsch: implementer of Smalltalk-80 Brendan Eich: Inventor of JavaScript Dan Ingalls: Smalltalk implementor and designer Simon Peyton Jones: Coinventor of Haskell Guy Steele: Coinventor of Scheme Is out of any doubt that their minds have something special and unreachable, and i'm not crazy to think i will ever able to create a new language; i'm just interested in this topic. So, imagine a funny\grotesque scenario where your crazy boss one day will come to your desk to say "i want a new programming language with my name on it..take the time you need and do it", which is the right approach to studying this fascinating\intimidating\magic topic? What kind of knowledge do you need to model, design and implement a brand new programming language?

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  • TreeView in Winforms and focus problem

    - by Marcus
    Hi, Can anyone please explain to my why the form in the code below gets out of focus when selecting a treenode in the tree? What should happen is that the form/button should get the focus when the tree disappears like the listview example but it doesn't. Code example: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace FocusTest { public partial class Form1 : Form { #region Generated /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// Clean up any resources being used. /// </summary> /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { System.Windows.Forms.ListViewItem listViewItem1 = new System.Windows.Forms.ListViewItem("Item1"); System.Windows.Forms.ListViewItem listViewItem2 = new System.Windows.Forms.ListViewItem("Item2"); System.Windows.Forms.ListViewItem listViewItem3 = new System.Windows.Forms.ListViewItem("Item3"); System.Windows.Forms.TreeNode treeNode1 = new System.Windows.Forms.TreeNode("Node0"); System.Windows.Forms.TreeNode treeNode2 = new System.Windows.Forms.TreeNode("Node1"); System.Windows.Forms.TreeNode treeNode3 = new System.Windows.Forms.TreeNode("Node2"); this.button1 = new System.Windows.Forms.Button(); this.listView1 = new System.Windows.Forms.ListView(); this.button2 = new System.Windows.Forms.Button(); this.treeView1 = new System.Windows.Forms.TreeView(); this.SuspendLayout(); // // button1 // this.button1.Location = new System.Drawing.Point(12, 12); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(75, 23); this.button1.TabIndex = 0; this.button1.Text = "button1"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // listView1 // this.listView1.Items.AddRange(new System.Windows.Forms.ListViewItem[] { listViewItem1, listViewItem2, listViewItem3 }); this.listView1.Location = new System.Drawing.Point(12, 41); this.listView1.Name = "listView1"; this.listView1.Size = new System.Drawing.Size(121, 97); this.listView1.TabIndex = 1; this.listView1.UseCompatibleStateImageBehavior = false; this.listView1.Visible = false; this.listView1.SelectedIndexChanged += new System.EventHandler(this.listView1_SelectedIndexChanged); this.listView1.View = View.List; // // button2 // this.button2.Location = new System.Drawing.Point(310, 11); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(75, 23); this.button2.TabIndex = 2; this.button2.Text = "button2"; this.button2.UseVisualStyleBackColor = true; this.button2.Click += new System.EventHandler(this.button2_Click); // // treeView1 // this.treeView1.Location = new System.Drawing.Point(310, 41); this.treeView1.Name = "treeView1"; treeNode1.Name = "Node0"; treeNode1.Text = "Node0"; treeNode2.Name = "Node1"; treeNode2.Text = "Node1"; treeNode3.Name = "Node2"; treeNode3.Text = "Node2"; this.treeView1.Nodes.AddRange(new System.Windows.Forms.TreeNode[] { treeNode1, treeNode2, treeNode3}); this.treeView1.Size = new System.Drawing.Size(121, 97); this.treeView1.TabIndex = 3; this.treeView1.Visible = false; this.treeView1.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeView1_AfterSelect); // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(760, 409); this.Controls.Add(this.treeView1); this.Controls.Add(this.button2); this.Controls.Add(this.listView1); this.Controls.Add(this.button1); this.Name = "Form1"; this.Text = "Form1"; this.ResumeLayout(false); } #endregion private System.Windows.Forms.Button button1; private System.Windows.Forms.ListView listView1; private System.Windows.Forms.Button button2; private System.Windows.Forms.TreeView treeView1; #endregion public Form1() { InitializeComponent(); } #region TreeView private void button2_Click(object sender, EventArgs e) { ToggleTreeView(); } private void ToggleTreeView() { if (treeView1.Visible) { Controls.Remove(treeView1); treeView1.Visible = false; } else { Controls.Add(treeView1); treeView1.Size = new Size(300, 400); treeView1.Location = PointToClient(PointToScreen(new System.Drawing.Point(button2.Location.X, button2.Location.Y + button2.Height))); this.treeView1.BringToFront(); treeView1.Visible = true; treeView1.Select(); } } private void treeView1_AfterSelect(object sender, TreeViewEventArgs e) { ToggleTreeView(); } #endregion #region ListView private void button1_Click(object sender, EventArgs e) { ToggleListView(); } private void ToggleListView() { if (listView1.Visible) { Controls.Remove(listView1); listView1.Visible = false; } else { Controls.Add(listView1); listView1.Size = new Size(300, 400); listView1.Location = PointToClient(PointToScreen(new System.Drawing.Point(button1.Location.X, button1.Location.Y + button1.Height))); this.listView1.BringToFront(); listView1.Visible = true; listView1.Select(); } } private void listView1_SelectedIndexChanged(object sender, EventArgs e) { if (listView1.Visible) ToggleListView(); } #endregion } }

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  • What kind of knowledge you need to invent a new programming language?

    - by systempuntoout
    I just finished to read "coders at works", a brilliant book by Peter Seibel with 15 interviews to some of the most interesting computer programmers alive today. Well, many of the interviewees have (co)invented\implemented a new programming language. For example: * Joe Armstrong: Inventor of Erlang * L. Peter Deutsch: implementer of Smalltalk-80 * Brendan Eich: Inventor of JavaScript * Dan Ingalls: Smalltalk implementor and designer * Simon Peyton Jones: Coinventor of Haskell * Guy Steele: Coinventor of Scheme Is out of any doubt that their minds have something special and unreachable, and i'm not crazy to think i will ever able to create a new language; i'm just interested in this topic. So, imagine a funny\grotesque scenario where your crazy boss one day will come to your desk to say "i want a new programming language with my name on it..take the time you need and do it", what will you start to study? What kind of knowledge do you need to model, design and implement a brand new programming language?

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  • What is the new line marker in an uploaded Word doc?

    - by Donde
    I am attempting to uplaod a Word doc and then write it line by line in HTML. I made a referecne to the Microsoft Word Object Library. Then I use the following code to grab the and put it in a string variable. However, I have tried multiple regex statements to replace the new line character with "" but nothing I have tried has worked... Dim wordApp As New Microsoft.Office.Interop.Word.Application Dim wordDoc As New Microsoft.Office.Interop.Word.Document Dim file As Object = "C:\test.doc" Dim nullobj As Object = System.Reflection.Missing.Value wordDoc = wordApp.Documents.Open(file, nullobj, nullobj, nullobj, nullobj, nullobj, nullobj, nullobj, nullobj, nullobj, nullobj, nullobj) Dim strArticle As String = wordDoc.Content.Text 'It's not finding the new line marker here strArticle = Regex.Replace(strArticle, ControlChars.NewLine, "<BR>")

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  • Java Slick2d Animation not working

    - by user3558075
    Hello everyone I am trying to make a simple 2d game using java and the slick2d library. this is my first time doing it and i need some help. right now I am trying to make the Animations for the character, so that when you go right he turns right and when you go left he turns left... but I keep getting an error when im drawing the character, ive try'd re-downloading slick but that didnt work. when i get rid of the player.draw(x,y); line of code it dosen't crash but the character isnt there. heres my code, can anyone help? package enteties; import input.Keyinput; import org.newdawn.slick.Animation; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.Image; import org.newdawn.slick.Input; import org.newdawn.slick.SlickException; import org.newdawn.slick.state.BasicGameState; import org.newdawn.slick.state.StateBasedGame; import playerinfo.Playerinfo; public class Player extends BasicGameState{ Playerinfo pi = new Playerinfo(); Keyinput ki = new Keyinput(); Animation player,up,down,left,right; public void init(GameContainer gc, StateBasedGame sbg) throws SlickException { Image[] goingUp = {new Image("res/buckysBack.png") , new Image("res/charBack.png")}; Image[] goingDown = {new Image("res/buckysFront.png") , new Image("res/charFront.png")}; Image[] goingLeft = {new Image("res/buckysLeft.png") , new Image("res/charLeft.png")}; Image[] goingRight = {new Image("res/buckysRight.png") , new Image("res/charRight.png")}; int[] duration = {200,200}; Animation up = new Animation(goingUp,duration,false); Animation down = new Animation(goingDown,duration,false); Animation left = new Animation(goingLeft,duration,false); Animation right = new Animation(goingRight,duration,false); player = up; } public void render(GameContainer gc, StateBasedGame sbg, Graphics g) throws SlickException { //error happens here, when i remove this line it dosent crash player.draw(720,450); } public void update(GameContainer gc, StateBasedGame sbg, int delta) throws SlickException { } public int getID() { return 0; } }

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  • How do I point a new domain to start on a page that's not index.html on separate hosting?

    - by Owen Campbell-Moore
    I'm using a service (CMS/Host) called SquareSpace to host my site, and today I'm registering the domain for it. Basically, how do I make it so when somebody types www.tedxoxford.com it points at http://www.tedxoxford.com/landing (currently http://tedxoxford.squarespace.com/landing) instead of the default index? Is this possible? Squarespace is quite a restricted CMS and means that your logos etc all point to the index so I don't want people ending up on my landing/splash page every time they want the home page, only on the first time they type in the URL. A dirty hack would be to check the refferer and redirect anyone hitting the index to the landing page, but that's a lot of loading overhead I'd rather avoid...

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  • Beginning on MySQL 5.6? Take the New MySQL for Beginners Training

    - by Antoinette O'Sullivan
    The MySQL for Beginners training course is a great way of for you to learn about the world's more popular open source database. During this 4 day course, epxert instructors will teach you how to use MySQL Server 5.6 and the latest tools while helping you develop deeper knowledge of using relational databases. You can take this live-instructor course as a: Live-Virtual event: Take this course from your own desk, choosing from a selection of events on the schedule to suit different time-zones. In-Class Event: Travel to an education center to follow this course. Below is a selection of events already on the schedule.  Location  Date  Delivery Language  Brussels, Belgium  8 September 2013  English  London, England  1 July 2013  English  Berlin, Germany  2 September 2013  German  Stuttgart, Germany  28 October 2013  German  Riga, Latvia  26 August 2013  Latvian Utrecht, Netherlands  9 September 2013  English   Warsaw, Poland  15 July 2013  Polish  Cape Town, South Africa  22 July 2013  English  Petaling Jaya, Malaysia  22 July 2013  English  Sao Paulo, Brazil  7 October 2013  Brazilian Portugese To register for this course or to learn more about the authentic MySQL curriculum, go to http://oracle.com/education/mysql.

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  • How to dispatch a new property value in an object to the same property of two other objects

    - by WPFadvocate
    In WPF, I've three objects exposing the same DependencyProperty (let's say it's an integer). I want all three property values to remain synchronized, i.e. that whenever the int value changes in an object, this value is propagated to the two other objects. I think of multibinding to do the job, but I don't know how to detect which object changed, thus which value should be used and propagated to the other objects. Edited: here is my tentative code for multibinding, with the false hope that it would work without additional code: // create the multibinding MultiBinding mb = new MultiBinding() { Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged }; // create individual bindings to associate object_2 and object_3 to object_1 Binding b2 = new Binding() { Source = object_2, Path = new PropertyPath("X") }; Binding b3 = new Binding() { Source = object_3, Path = new PropertyPath("X") }; // add individual bindings to multibinding mb.Bindings.Add(b2); mb.Bindings.Add(b3); // bind object_2 and _3 to object_1 BindingOperations.SetBinding(object_1, TypeObject_1.XProperty, mb); But actually, there is a runtime error, saying the binding set by the last instruction is lacking a converter. But again I don't know how to write this converter (there is nothing to convert (as this is the case in the related MS sample of code linking 3 rgb properties to a color property), only to forward the value of the property changed to the two other properties). I understand I could solve the problem by creating an X_Changed event in the 3 types and then have each object registering to the two other objects event. I don't like this "manual" way and would prefer to bind the 3 properties together.

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  • How do early version numbers work for new products?

    - by Lord Torgamus
    I'm currently writing a small desktop application for a friend, but I'm doing it primarily as a learning experience for myself. In the spirit of getting educated and doing things The Right Way, I want to have version numbers for this app. My research brought up these related results What "version naming convention" do you use? How do you version your files (Version Numbers) Forked a project, where do my version numbers start? but none of them address numbering of alphas, betas, release candidates, &c. What are the conventions for version numbers below 1.0? I know they can go on for some time; for example, PuTTY has been around for at least a decade and is still only at version beta 0.60.

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  • How can I remove old kernels/install new ones when /boot is full?

    - by Marcel
    I know this question is asked many times before, however with me it is just a bit different I guess. # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 224G 5.2G 208G 3% / udev 1.9G 4.0K 1.9G 1% /dev tmpfs 777M 260K 777M 1% /run none 5.0M 0 5.0M 0% /run/lock none 1.9G 0 1.9G 0% /run/shm /dev/sda2 90M 88M 0 100% /boot /dev/sda6 1.9G 514M 1.3G 29% /tmp My boot partition is full. Current Kernel: # uname -r 3.2.0-35-generic All Kernels: # dpkg --list | grep linux-image ii linux-image-3.2.0-32-generic 3.2.0-32.51 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-3.2.0-34-generic 3.2.0-34.53 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-3.2.0-35-generic 3.2.0-35.55 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iF linux-image-3.2.0-37-generic 3.2.0-37.58 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iF linux-image-3.2.0-38-generic 3.2.0-38.60 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iU linux-image-generic 3.2.0.37.45 Generic Linux kernel image So I thought of removing the 3.2.0.32-generic kernel with: # sudo apt-get purge linux-image-3.2.0-32-generic Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: linux-generic : Depends: linux-headers-generic (= 3.2.0.37.45) but 3.2.0.38.46 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). No success. When I try apt-get -f install it also fails: # apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: linux-headers-3.2.0-34 linux-headers-3.2.0-35 linux-headers-3.2.0-34-generic linux-headers-3.2.0-35-generic Use 'apt-get autoremove' to remove them. The following extra packages will be installed: linux-generic linux-image-generic The following packages will be upgraded: linux-generic linux-image-generic 2 upgraded, 0 newly installed, 0 to remove and 9 not upgraded. 5 not fully installed or removed. Need to get 0 B/4,334 B of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? y Setting up initramfs-tools (0.99ubuntu13.1) ... update-initramfs: deferring update (trigger activated) Setting up linux-image-3.2.0-37-generic (3.2.0-37.58) ... Running depmod. update-initramfs: deferring update (hook will be called later) The link /initrd.img is a dangling linkto /boot/initrd.img-3.2.0-38-generic Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-37-generic /boot/vmlinuz-3.2.0-37-generic update-initramfs: Generating /boot/initrd.img-3.2.0-37-generic gzip: stdout: No space left on device E: mkinitramfs failure cpio 141 gzip 1 update-initramfs: failed for /boot/initrd.img-3.2.0-37-generic with 1. run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1 Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.2.0-37-generic.postinst line 1010. dpkg: error processing linux-image-3.2.0-37-generic (--configure): subprocess installed post-installation script returned error exit status 2 Setting up linux-image-3.2.0-38-generic (3.2.0-38.60) ... Running depmod. update-initramfs: deferring update (hook will be called later) The link /initrd.img is a dangling linkto /boot/initrd.img-3.2.0-37-generic Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-38-generic /boot/vmlinuz-3.2.0-38-generic update-initramfs: Generating /boot/initrd.img-3.2.0-38-generic gzip: stdout: No space left on device E: mkinitramfs failure cpio 141 gzip 1 update-initramfs: failed for /boot/initrd.img-3.2.0-38-generic with 1. run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1 Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.2.0-38-generic.postinst line 1010. dpkg: error processing linux-image-3.2.0-38-generic (--configure): subprocess installed post-installation script returned error exit status 2 dpkg: dependency problems prevent configuration of linux-image-generic: linux-image-generic depends on linux-image-3.2.0-37-generic; however: Package linux-image-3.2.0-37-generic is not configured yet. dpkg: error processing linux-image-generic (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of linux-generic: linux-generic depends on linux-image-generic (= 3.2.0.37.45); however: Package linux-image-generic is not configured yet. linux-generic depends on linux-headers-generic (= 3.2.0.37.45); however: Version of linux-headers-generic on system is 3.2.0.38.46. dpkg: error processing linux-generic (--configure): dependency problems - leaving unconfigured Processing triggers for initramfs-tools ... No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because MaxReports is reached already update-initramfs: Generating /boot/initrd.img-3.2.0-35-generic gzip: stdout: No space left on device E: mkinitramfs failure cpio 141 gzip 1 update-initramfs: failed for /boot/initrd.img-3.2.0-35-generic with 1. dpkg: error processing initramfs-tools (--configure): subprocess installed post-installation script returned error exit status 1 No apport report written because MaxReports is reached already Errors were encountered while processing: linux-image-3.2.0-37-generic linux-image-3.2.0-38-generic linux-image-generic linux-generic initramfs-tools E: Sub-process /usr/bin/dpkg returned an error code (1) Any help would really be appreciated. Update: I did: sudo rm /boot/*-3.2.0-32-generic /boot/*-3.2.0-34-generic After that the following problem with apt-get -f install: root@localhost:/# apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: linux-generic The following packages will be upgraded: linux-generic 1 upgraded, 0 newly installed, 0 to remove and 9 not upgraded. 1 not fully installed or removed. Need to get 0 B/1,722 B of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? y dpkg: dependency problems prevent configuration of linux-generic: linux-generic depends on linux-image-generic (= 3.2.0.37.45); however: Version of linux-image-generic on system is 3.2.0.38.46. linux-generic depends on linux-headers-generic (= 3.2.0.37.45); however: Version of linux-headers-generic on system is 3.2.0.38.46. dpkg: error processing linux-generic (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: linux-generic E: Sub-process /usr/bin/dpkg returned an error code (1)

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