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• Windows XP unknown location popup annoyance

  - by mcgyver5

  I'm plagued by a popup from Windows XP when I use wireless. It says, "You are in an Unknown Location..." It always pops above whatever window I'm using, but does not take focus, so while it does not interrupt my typing, it gets in the way and I can't dismiss it with a keystroke. I'd like to find a way to disable this popup. I've searched in control panel -- Network Connections. I'm not referring to "balloon tips" that appear related to the wireless connection in a new location.

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• Space a valid delimiter for email addresses in email header?

  - by semanticalo

  Is it syntactically correct to delimit multiple email recipients in the "To" header of an email with spaces only or do I need to use another delimiter (a semicolon or the like)? Example (MIME data reads as follows): Date: Mon, 04 Oct 2010 06:14:16 +0200 From: [email protected] To: [email protected] [email protected] [email protected] Subject: Test Subject The above will be processed by many email processing applications, but I need to know whether it's correct according to standard (RFC). Unfortunately I didn't find anything useful on the internet so far. Thanks a million for your help!

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• Simple monitoring utility with up/down statuses of the host's network connectivity and services

  - by Beaming Mel-Bin

  We've looked at many monitoring tools (SolarWinds, Zabbix, Nagios) through out the last 10 years but they never took hold because they are overly complicated. I am willing to try them again or something new at this point but with a much simpler goal: ping to check up and down of host tcp probes to test up and down of service notifications via e-mail web GUI prefer an OSS solution Wanted to know if someone has any recommendations on this. This could be a Windows or Linux application. Preferably without the reqirement of agents. I don't even need SNMP support but that may be nice for expanding once we have the above mentioned bare minimum in place.

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• Is there a visual web application builder or rapid webapp prototyping framework?

  - by Jesper Mortensen

  Question: Is there such a thing as a self-hosted framework or CMS especially tailored towards the creation of interactive web applications without -- or with an absolute minimum of -- programming? (Substantially less programming than say a simple Rails app or a plugin for Wordpress, Joomla etc would require.) As for desired features I'd settle for whatever is available, but some ideas could be: A User authentication and Permissions system. A GUI-driven input form builder. A GUI-driven template / visual site design builder. A simple scripting language (think AppleScript-like simplicity) A highly modular architecture, with high-level business objects (users, forms data, etc) exposed for easy re-use. If something like the above doesn't exist, then what comes near this? Need: This is for self-hosted rapid prototyping of web applications, and limited user testing of webapp user interface designs in a closed user test. Notes: I know about Ruby on Rails (Rails), Django, Pyramid etc. I'm looking for something much faster to work in, for making prototypes. I know about CMS's in general but find that most of them are tailored towards displaying information to the end users. If there is an exceptionally easy-to-master CMS with easy scripting (lets say much more so than for example Wordpress) then I'd be interested.

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• JavaScript Class Patterns Revisited: Endgame

  - by Liam McLennan

  I recently described some of the patterns used to simulate classes (types) in JavaScript. But I missed the best pattern of them all. I described a pattern I called constructor function with a prototype that looks like this: function Person(name, age) { this.name = name; this.age = age; } Person.prototype = { toString: function() { return this.name + " is " + this.age + " years old."; } }; var john = new Person("John Galt", 50); console.log(john.toString()); and I mentioned that the problem with this pattern is that it does not provide any encapsulation, that is, it does not allow private variables. Jan Van Ryswyck recently posted the solution, obvious in hindsight, of wrapping the constructor function in another function, thereby allowing private variables through closure. The above example becomes: var Person = (function() { // private variables go here var name,age; function constructor(n, a) { name = n; age = a; } constructor.prototype = { toString: function() { return name + " is " + age + " years old."; } }; return constructor; })(); var john = new Person("John Galt", 50); console.log(john.toString()); Now we have prototypal inheritance and encapsulation. The important thing to understand is that the constructor, and the toString function both have access to the name and age private variables because they are in an outer scope and they become part of the closure.

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• Customized windows xp installation

  - by user23950

  How to create a customized version of an xp installation cd. I want a hand's off installation that will install all the themes, drivers , and applications I need without my intervention. How can I do that. I tried to make use of this software called Nlite. But when I tested the iso file using virtual box. The virtual box said that there's a certain file that cannot be copied. And by the way, before I customized the original iso image of windows xp sp3, it doesn't have the file copying problem that I mentioned above.

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• how a pure functional programming language manage without assignment statements?

  - by Gnijuohz

  When reading the famous SICP,I found the authors seem rather reluctant to introduce the assignment statement to Scheme in Chapter 3.I read the text and kind of understand why they feel so. As Scheme is the first functional programming language I ever know something about,I am kind of surprised that there are some functional programming languages(not Scheme of course) can do without assignments. Let use the example the book offers,the bank account example.If there is no assignment statement,how can this be done?How to change the balance variable?I ask so because I know there are some so-called pure functional languages out there and according to the Turing complete theory,this must can be done too. I learned C,Java,Python and use assignments a lot in every program I wrote.So it's really an eye-opening experience.I really hope someone can briefly explain how assignments are avoided in those functional programming languages and what profound impact(if any) it has on these languages. The example mentioned above is here: (define (make-withdraw balance) (lambda (amount) (if (>= balance amount) (begin (set! balance (- balance amount)) balance) "Insufficient funds"))) This changed the balance by set!.To me it looks a lot like a class method to change the class member balance. As I said,I am not familiar with functional programming languages,so if I said something wrong about them,feel free to point out.

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• LDAP Bind request failing

  - by Madhur Ahuja

  I have a Windows Server 2008 R2 Active Directory domain controller with domain madhurmoss.com I have a Linux box which is trying to connect to LDAP (389) on above box, which is failing. Upon inspection in Wireshark, I see a bind request with following query sAMAccountName=Administrator,DC=madhurmoss,DC=com and result with invalid Credentials 80090308: LdapErr: DSID-0C0903A9, comment: AcceptSecurityContext error, data 52e, v1db0 I want it to connect it through Administrator which lies in CN=Administrator,CN=Users,DC=madhurmoss,DC=com The supplied credentials are correct. I believe the query sAMAccountName=Administrator,DC=madhurmoss,DC=com is wrong. Can anyone guide me what could be wrong ?

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• public key infrastructure - distribute bad root certificates

  - by iamrohitbanga

  Suppose a hacker launches a new Linux distro with firefox provided with it. Now a browser contains the certificates of the root certification authorities of PKI. Because firefox is a free browser anyone can package it with fake root certificates. Can this be used to authenticate some websites. How? Many existing linux distros are mirrored by people. They can easily package software containing certificates that can lead to such attacks. Is the above possible? Has such an attack taken place before?

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• How to choose cell to put entity in in an uniform grid used for broad phase collision detection?

  - by nathan

  I'm trying to implement the broad phase of my collision detection algorithm. My game is an arcade game with lot of moving entities in an open space with relatively equivalent sizes. Regarding the above specifications, i decided to use an uniform grid for space partitioning. The problem i have right know is how to efficiently choose in which cells an entity should be added. ATM i'm doing something like this: for (int x = 0; x < gridSize; x++) { for (int y = 0; y < gridSize; y++) { GridCell cell = grid[x][y]; cell.clear(); //remove the previously added entities for (int i = 0; i < entities.size(); i++) { Entity e = entities.get(i); if (cell.isEntityOverlap(e)) { cell.add(e); } } } } The isEntityOverlap is a simple method i added my GridCell class. public boolean isEntityOverlap(Shape s) { return cellArea.intersects(s); } Where cellArea is a Rectangle. cellArea = new Rectangle(x, y, CollisionGrid.CELL_SIZE, CollisionGrid.CELL_SIZE); It works but it's damn slow. What would be a fast way to know all the cells an entity overlaps? Note: by "it works" i mean, the entities are contained in the good cells over the time after movements etc.

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• 10 Tech Products Ahead of Their Time [Video]

  - by Jason Fitzpatrick

  Sometimes a product just can’t help but be too far ahead of it’s time to be adopted. Check out these 10 products that had their moment of glory a moment (or a decade) too soon. At Mashable they’ve gathered up 10 products that hit the market too soon for people to really appreciate them. Among them, as seen in the video above, a super simple internet-focused computer. At the time it hit the market people simply didn’t get the value of having a cheap, easy to use internet terminal. It probably didn’t help much that the 1990s internet didn’t have the plethora of powerful and useful web-based applications we have now. None the less we now have tons of lightweight and “underpowered” devices focused on the internet experience (like netbooks, iPads, smart phones, chromebooks, and more). Hit up the link below to see the 9 other gems from their collection of products ahead of their times. 10 Tech Products Ahead of Their Time [Mashable] How to Make and Install an Electric Outlet in a Cabinet or DeskHow To Recover After Your Email Password Is CompromisedHow to Clean Your Filthy Keyboard in the Dishwasher (Without Ruining it)

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• What's the proper way to calculate probability for a card game?

  - by Milan Babuškov

  I'm creating AI for a card game, and I run into problem calculating the probability of passing/failing the hand when AI needs to start the hand. Cards are A, K, Q, J, 10, 9, 8, 7 (with A being the strongest) and AI needs to play to not take the hand. Assuming there are 4 cards of the suit left in the game and one is in AI's hand, I need to calculate probability that one of the other players would take the hand. Here's an example: AI player has: J Other 2 players have: A, K, 7 If a single opponent has AK7 then AI would lose. However, if one of the players has A or K without 7, AI would survive. Now, looking at possible distribution, I have: P1 P2 AI --- --- --- AK7 loses AK 7 survives A7 K survives K7 A survives A 7K survives K 7A survives 7 KA survives AK7 loses Looking at this, it seems that there is 75% chance of survival. However, I skipped the permutations that mirror the ones from above. It should be the same, but somehow when I write them all down, it seems that chance is only 50%: P1 P2 AI --- --- --- AK7 loses A7K loses K7A loses KA7 loses 7AK loses 7KA loses AK 7 survives A7 K survives K7 A survives KA 7 survives 7A K survives 7K A survives A K7 survives A 7K survives K 7A survives K A7 survives 7 AK survives 7 KA survives AK7 loses A7K loses K7A loses KA7 loses 7AK loses 7KA loses 12 loses, 12 survivals = 50% chance. Obviously, it should be the same (shouldn't it?) and I'm missing something in one of the ways to calculate. Which one is correct?

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• Dell powerconnect 6224 vlan routing

  - by user1007727

  I have a small network and I need help with routing .. . My VLANs VLAN 1010 SALES VLAN 1020 HR I have assigned the above vlans to a tagged port and I have added a default route to send the traffic of to my firewall. ip route 0.0.0.0 0.0.0.0 10.10.10.10 I have added a new vlan VLAN 1030 Services and I would like its traffic to go to a different interface on the firewall, 10.10.10.20 how can I go about doing that? can someone give me an example? your help is highly appreciated. Thank you

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• How to reconnect to Remote Session in a script?

  - by Lukasz

  Hello, I need to persist a Remote desktop connection across a reboot of a Terminal server. I'm thinking that it would be something like a scheduled task that would run periodically and check the running state of the session and restart it if it's down. BTW, I did check the "Reconnect..." checkbox on the advanced tab of the connection options, but it still goes down everytime we restart the terminal server. Does anyone have the script that would accomplish the above in a scheduled task, or perhaps another solution?

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• MyMessageBox for Phone and Store apps

  - by Daniel Moth

  I am sharing a class I use for both my Windows Phone 8 and Windows Store app projects. Background and my requirements For my Windows Phone 7 projects two years ago I wrote an improved custom MessageBox class that preserves the well-known MessageBox interface while offering several advantages. I documented those and shared it for Windows Phone 7 here: Guide.BeginShowMessageBox wrapper. Aside: With Windows Phone 8 we can now use the async/await feature out of the box without taking a dependency on additional/separate pre-release software. As I try to share code between my existing Windows Phone 8 projects and my new Windows Store app projects, I wanted to preserve the calling code, so I decided to wrap the WinRT MessageDialog class in a custom class to present the same MessageBox interface to my codebase. BUT. The MessageDialog class has to be called with the await keyword preceding it (which as we know is viral) which means all my calling code will also have to use await. Which in turn means that I have to change my MessageBox wrapper to present the same interface to the shared codebase and be callable with await… for both Windows Phone projects and Windows Store app projects. Solution The solution is what the requirements above outlined: a single code file with a MessageBox class that you can drop in your project, regardless of whether it targets Windows Phone 8, or Windows 8 Store apps or both. Just call any of its static Show functions using await and dependent on the overload check the return type to see which button the user chose.// example from http://www.danielmoth.com/Blog/GuideBeginShowMessageBox-Wrapper.aspx if (await MyMessageBox.Show("my message", "my caption", "ok, got it", "that sucks") == MyMessageBoxResult.Button1) { // Do something Debug.WriteLine("OK"); } The class can be downloaded from the bottom of my older blog post. Comments about this post by Daniel Moth welcome at the original blog.

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• Autocomplete in Silverlight with Visual Studio 2010

  - by Sayre Collado

  Last week I keep searching on how to use the autocomplete in silverligth with visual studio 2010 but most of the examples that I find they are using a textbox or combobox for the autocomplete. I tried to study those examples and apply to the single autocomplete from tools on my silverlight project. And now this is the result. I will use a database again from my previous post (Silverlight Simple DataBinding in DataGrid) to show how the autocomplete works with database. This is the output: First, this is the setup for my autocomplete: //The tags for autocompletebox on XAML Second, my simple snippets: //Event for the autocomplete to send a text string to my function private void autoCompleteBox1_KeyUp(object sender, KeyEventArgs e) { autoCompleteBox1.Populating += (s, args) => { args.Cancel = true; var c = new Service1Client(); c.GetListByNameCompleted +=new EventHandler(c_GetListByNameCompleted); c.GetListByNameAsync(autoCompleteBox1.Text); }; } //Getting result from database void c_GetListByNameCompleted(object sender, GetListByNameCompletedEventArgs e) { autoCompleteBox1.ItemsSource = e.Result; autoCompleteBox1.PopulateComplete(); } The snippets above will show on how to use the autocompleteBox using the data from database that bind in DataGrid. But what if we want to show the result on DataGrid while the autocomplete changing the items source? Ok just add one line to c_GetListByNameCompleted void c_GetListByNameCompleted(object sender, GetListByNameCompletedEventArgs e) { autoCompleteBox1.ItemsSource = e.Result; autoCompleteBox1.PopulateComplete(); dataGrid1.ItemsSource = e.Result; }

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• OpenGL CPU vs. GPU

  - by Nitrex88

  So I've always been under the impression that doing work on the GPU is always faster than on the CPU. Because of this, in OpenGL, I usually try to do intensive tasks in shaders so they get the speed boost from the GPU. However, now I'm starting to realize that some things simply work better on the CPU and actually perform worse on the GPU (particularly when a geometry shader is involved). For example, in a recent project I did involving procedurally generated terrain, I tried passing a grid of single triangles into a geometry shader, and tesselated each of these triangles into quads with 400 vertices whose height was determined by a noise function. This worked fine, and looked great, but easily maxed out the GPU with only 25 base triangles and caused a very slow framerate. I then discovered that tesselating on the CPU instead, and setting the height (using noise function) in the vertex shader was actually faster! This prompted me to question the benefits of using the GPU as much as possible... So, I was wondering if someone could describe the general pros and cons of using the GPU vs CPU for intensive graphics tasks. I know this mainly comes down to what your trying to achieve, so if necessary, use the above scenario to discuss why the "CPU + vertex shader" was actually faster than doing everything in the geometry shader on the GPU. It's possible my hardware (newest macbook pro) isn't optomized well for the geometry shader (thus causing the slow framerate). Also, I read that the vertex shader is very good with parallelism, and would love a quick explanation of how this may have played a role in speeding up my procedural terrain. Any info/advice about CPU/GPU/shaders would be awesome!

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• Strange IIS/Asp.net Exception Message

  - by Element

  I have a standard asp.net 2.0 application running on IIS 6. I have noticed some strange exception messages in the logs. They seem to be caused by random spam bots trying to submit forms. They are strange because the request string is huge and all the exception details in the event manager are messed up, they have been replaced with %21,%22, etc.. as seen in the screen shot. Is this some kind of exploit or just a bug in the asp.net exception handler/logger ? UPDATE: I traced the requests that are causing this strange log event to a bug in IE8 that causes it to request scriptresource.axd?d={html from page} as described in these links: MS Connect SO - Invalid Webresource.axd SO - IE8 Dropping Memory Pages I am still not sure why these requests would break the IIS log event like seen above, they are just long strings of jiberish being sent to the server, maybe someone reading this can shed some light on it.

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• How to develop Online Shopping Portal Application using PHP ?

  - by Sarang

  I do not know PHP & I have to develop a Shopping Portal with following Definition : Scenario: Online Shopping Portal XYZ.com wants to create an online shopping portal for managing its registered customers and their shopping. The customers need to register themselves first before they do shopping using the shopping portal. However, everyone, whether registered or not, can view the various products along with the prices listed in the portal. The registered customers, after logging in, are allowed to place order for one or more products from the products listed in the portal. Once the order is placed, the customer gets a reference order number and the order status should be “order in process”. The customers can track their order using the given reference number. The management of XYZ.com should be able to modify the order status of a particular reference order number to “shipped” once the products are shipped to the shipping address entered by the customer at the time of placing the order. The Functionalities required are : Create the interface for the XYZ.com shopping portal using HTML/XHTML and CSS. Implement the client side validations using JavaScript. Create the tables using MySQL. Implement the functionality using the server side scripting language, PHP. Integrate all the above tasks and make the XYZ.com shopping portal functional. How do I develop this application with following proper steps of development ?

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• ASP.Net MVC Interview Questions and Answers

  - by Samir R. Bhogayta

  About ASP.Net MVC The ASP.Net MVC is the framework provided by Microsoft that lets you develop the applications that follows the principles of Model-View-Controller (MVC) design pattern. The .Net programmers new to MVC thinks that it is similar to WebForms Model (Normal ASP.Net), but it is far different from the WebForms programming.  This article will tell you how to quick learn the basics of MVC along with some frequently asked interview questions and answers on ASP.Net MVC 1. What is ASP.Net MVC The ASP.Net MVC is the framework provided by Microsoft to achieve     separation of concerns that leads to easy maintainability of the     application. Model is supposed to handle data related activity View deals with user interface related work Controller is meant for managing the application flow by communicating between Model and View. Normal 0 false false false EN-US X-NONE X-NONE 2. Why to use ASP.Net MVC The strength of MVC (i.e. ASP.Net MVC) listed below will answer this question MVC reduces the dependency between the components; this makes your code more testable. MVC does not recommend use of server controls, hence the processing time required to generate HTML response is drastically reduced. The integration of java script libraries like jQuery, Microsoft MVC becomes easy as compared to Webforms approach. 3. What do you mean by Razor The Razor is the new View engine introduced in MVC 3.0. The View engine is responsible for processing the view files [e.g. .aspx, .cshtml] in order to generate HTML response. The previous versions of MVC were dependent on ASPX view engine.  4. Can we use ASPX view engine in latest versions of MVC Yes. The Recommended way is to prefer Razor View 5. What are the benefits of Razor View?      The syntax for server side code is simplified      The length of code is drastically reduced      Razor syntax is easy to learn and reduces the complexity Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} 6. What is the extension of Razor View file? .cshtml (for c#) and .vbhtml (for vb) 7. How to create a Controller in MVC Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} Create a simple class and extend it from Controller class. The bare minimum requirement for a class to become a controller is to inherit it from ControllerBase is the class that is required to inherit to create the controller but Controller class inherits from ControllerBase. 8. How to create an Action method in MVC Add a simple method inside a controller class with ActionResult return type. 9. How to access a view on the server    The browser generates the request in which the information like Controller name, Action Name and Parameters are provided, when server receives this URL it resolves the Name of Controller and Action, after that it calls the specified action with provided parameters. Action normally does some processing and returns the ViewResult by specifying the view name (blank name searches according to naming conventions).   10. What is the default Form method (i.e. GET, POST) for an action method GET. To change this you can add an action level attribute e.g [HttpPost] Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} 11. What is a Filter in MVC? When user (browser) sends a request to server an action method of a controller gets invoked; sometimes you may require executing a custom code before or after action method gets invoked, this custom code is called as Filter. 12. What are the different types of Filters in MVC? a. Authorization filter b. Action filter c. Result filter d. Exception filter [Do not forget the order mentioned above as filters gets executed as per above mentioned sequence] 13. Explain the use of Filter with an example? Suppose you are working on a MVC application where URL is sent in an encrypted format instead of a plain text, once encrypted URL is received by server it will ignore action parameters because of URL encryption. To solve this issue you can create global action filter by overriding OnActionExecuting method of controller class, in this you can extract the action parameters from the encrypted URL and these parameters can be set on filterContext to send plain text parameters to the actions.     14. What is a HTML helper? A HTML helper is a method that returns string; return string usually is the HTML tag. The standard HTML helpers (e.g. Html.BeginForm(),Html.TextBox()) available in MVC are lightweight as it does not rely on event model or view state as that of in ASP.Net server controls.

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• What happens to remounted data/directories

  - by cauon

  According to suggestions in this post I am trying to improve my system to run better with a Solid State Drive. But regarding to RAMdisks and /etc/fstab usage I have some understanding problems coming up. So let's say I add the following lines to /etc/fstab tmpfs /tmp tmpfs defaults,noatime,nodiratime,mode=1777 0 0 tmpfs /var/spool tmpfs defaults,noatime,nodiratime,mode=1777 0 0 tmpfs /var/tmp tmpfs defaults,noatime,nodiratime,mode=1777 0 0 tmpfs /var/log tmpfs defaults,noatime,nodiratime,mode=0755 0 0 I know that on startup these locations should now get mounted into the RAM (hopefully). But what happens to the physical space that was mounted on those places before? Is it gone? Will it be back when I edit my /etc/fstab back to the Version without tmpfs? Will the space still be allocated on my SSD in a way that I can't use it for any other data? Sometimes it is suggested to add the following line, too: none /var/cache aufs dirs=/tmp:/var/cache=ro 0 0 What does this actually do? I noticed that /var/cache takes almost 1GB of space on my harddisk. So should i clear the directory before activating this line? (this is related to the former question) This causes me some confusions and I hope you can give me some clarifications. UPDATE I've downloaded a image with 600MB in size into /tmp that is mounted with the tmpfs settings above. Now I wanted to compare the RAM usage before and after the download. I expect the RAM usage to be increased by 600MB after the download. But the System Monitoring Tool showed me no changes at all. How can this be? Does tmpfs work other than I actually expect it to?

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• Enigmail - how to encrypt only part of the message?

  - by Lukasz Zaroda

  When I confirmed my OpenPGP key on launchpad I got a mail from them, that was only partially encrypted with my key (only few paragraphs inside the message). Is it possible to encrypt only chosen part of the message with Enigmail? Or what would be the easiest way to accomplish it? Added #1: I found a pretty convenient way for producing ASCII armoured encrypted messages by using Nautilus interface (useful for ones that for some reason doesn't like to work with terminal). You need to install Nautilus-Actions Configuration Tool, and add there a script with a name eg. "Encrypt in ASCII" and parameters: path: gpg parameters: --batch -sear %x %f The trick is that now you can create file, with extension that would be name of your recipient, you can then fill it with your message, right click it in Nautilus, choose "Encrypt in ASCII", and you will have encrypted ascii file which content you can (probably) just copy to your message. But if anybody knows more convenient solution please share it. Added #1B: In the above case if you care more about security of your messages, It's worth to turning off invisible backup files that gedit creates every time, you create new document, or just remember to delete them.

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• Silverlight Cream for November 27, 2011 -- #1176

  - by Dave Campbell

  In this Issue: Matt Eland, Parag Joshi, Jerrel Blankenship, and Joost van Schaik. Above the Fold: WP7: "Safe event detachment base class for Windows Phone 7 behaviors" Joost van Schaik Shoutouts: Michael Palermo's latest Desert Mountain Developers is up Michael Washington's latest Visual Studio #LightSwitch Daily is up From SilverlightCream.com:31 Days of Mango | Day #22: App ConnectMatt Eland takes the reigns of Jeff's blog for Day 22 and is talking about App Connect... App Connect allows apps to be listed on Quick Cards relative to an app's subject matter, and Quick Cards are items that appear in searches to let users find out more info... check out the blog post if you're not familiar with this31 Days of Mango | Day #21: SocketsJeff's Day 21 is written by Parag Joshi, and is on sockets... and is building a WP7 app for posting restaurant orders to a Silverlight OOB app running on a host machine... good sized tutorial and discussion, plus a project to download and play with31 Days of Mango | Day #20: Creating RingtonesJerrel Blankenship has Day 20 for Jeff Blankenburg's 31 Days of Mango and is discussing Ringtones... how to create and save a custom ringtone for your userSafe event detachment base class for Windows Phone 7 behaviorsJoost van Schaik revisits his Safe Event Detachment pattern for WP7 and built a base class to take care of the initialization involved to be kind to us, the developers... code includedStay in the 'Light!Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCreamJoin me @ SilverlightCream | Phoenix Silverlight User GroupTechnorati Tags:Silverlight    Silverlight 3    Silverlight 4    Windows PhoneMIX10

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• Cheating Incident

  - by Paul Sorensen

  Hi Everyone -I just wanted to give you a heads-up on some recent actions that we had to take regarding someone who tried to cheat on a test.Just last week, we had a candidate who was bold enough to try to take screen-shots during the exam using his cell phone. Of course this is completely against Oracle Certification Program policy. This candidate's exam was immediately stopped, and the candidate was ejected from the testing center.Of course it doesn't end there. This candidate was also suspended permanently from the Oracle Certification Program, and all of his previous certifications were revoked. He is no longer eligible to participate in the program. Unfortunately - if this candidate works for an Oracle partner company, then his company will also likely become aware of his indiscretion - particularly when they request validation of his certification.Although this particular candidate was blatantly involved in content theft, any type of cheating incident is very unfortunate. It erodes the value of the certification credentials, and hurts everyone involved. The actions described above represent our efforts to curb cheating and maintain the value of Oracle certification credentials.I encourage anyone seeking Oracle certification to carefully read and adhere to the Oracle Certification Program Fraudulent Activity Policy.Thanks,QUICK LINKSOracle Certification Program Candidate Agreement (PDF 155K)Oracle Certification Program Fraudulent Activity Policy

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• OOP concept: is it possible to update the class of an instantiated object?

  - by Federico

  I am trying to write a simple program that should allow a user to save and display sets of heterogeneous, but somehow related data. For clarity sake, I will use a representative example of vehicles. The program flow is like this: The program creates a Garage object, which is basically a class that can contain a list of vehicles objects Then the users creates Vehicles objects, these Vehicles each have a property, lets say License Plate Nr. Once created, the Vehicle object get added to a list within the Garage object --Later on--, the user can specify that a given Vehicle object is in fact a Car object or a Truck object (thus giving access to some specific attributes such as Number of seats for the Car, or Cargo weight for the truck) At first sight, this might look like an OOP textbook question involving a base class and inheritance, but the problem is more subtle because at the object creation time (and until the user decides to give more info), the computer doesn't know the exact Vehicle type. Hence my question: how would you proceed to implement this program flow? Is OOP the way to go? Just to give an initial answer, here is what I've came up until now. There is only one Vehicle class and the various properties/values are handled by the main program (not the class) through a dictionary. However, I'm pretty sure that there must be a more elegant solution (I'm developing using VB.net): Public Class Garage Public GarageAdress As String Private _ListGarageVehicles As New List(Of Vehicles) Public Sub AddVehicle(Vehicle As Vehicles) _ListGarageVehicles.Add(Vehicle) End Sub End Class Public Class Vehicles Public LicensePlateNumber As String Public Enum VehicleTypes Generic = 0 Car = 1 Truck = 2 End Enum Public VehicleType As VehicleTypes Public DictVehicleProperties As New Dictionary(Of String, String) End Class NOTE that in the example above the public/private modifiers do not necessarily reflect the original code

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