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• ASP.NET How expensive is it to call an Application Variable many times?

  - by Matias Nino

  The short of it is: Is it costly to check an Application Variable such as Application("WebAppName") more 10-20 times each time a page loads? Background: (feel free to critique) Some includes in my site contain many links and images which cannot use relative urls due to their inclusion in different paths. Hence these includes contain frequent instances of <img src="<%=Application("Webroot")%>images\image.gif"> Is it expensive to keep calling an Application variable like this? Should I just put the Application value in some local variable to use where needed? IMPORTANT NOTE: I need my webapp to run fine on a server whether it be in the root web ("/") or in a virtual subweb ("/app"). Thanks in advance for any wisdom shared.

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• Can I have a block in begin/while statement in Ruby?

  - by jbjuly

  I'm trying out to have a block in a while and begin statements in Ruby, but I get a syntax error. Any other way to implement it? Here's what I want to accomplish (1..limit).each { |i| while (true) do |n| x = n * (i%n) puts n if n%i != 0 break if x.even? && !x.zero? n += 1 end }

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• GCC how to block system calls within a program?

  - by CMPITG

  Does anyone tell me how to block system calls within a program, please? I am building a system which takes a piece of C source code, compiles it with gcc and runs it. For security reasons, I need to prevent the compiled program from calling system calls. Is there any way to do it, from the source code level (e.g. stripping the header files of gcc, detecting malicious external calls, ...) to the executable level?

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• Is defining a variable within a block scope supported by all compilers?

  - by Jay

  Suppose I want to declare and define a variable with an if condition block. Will this compile in all compilers? What does the C standard say about this?

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• Java: I have try,catch and finally in a java code and I want after try or catch block finally does n

  - by Sanjeev

  I have following code public class TEST { public static void main(String arg[]){ try { System.out.println("execute try"); //what should I write hear that finally does not run. } catch (Exception e){ System.out.println(e); } finally{ System.out.println("execute finally"); } } } what should I write in try or catch block that finally does not run. any idea?

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• How to deploy and configure many copies of an application to multiple domains on the same server

  - by Oren

  We are about to begin work on an application that will eventually be deployed many times on one server. I am hoping to build a nice interface so that one of my coworkers can easily create new deployments of this application. The idea is to create a wizard with a series of options that will configure basic properties of each particular copy of the app such as color scheme, domain name, etc. Each copy of the application may be further tweaked independently down the line. I would like to know what is the best way to manage the automatic creation of users, the updating of domain name info and the deploying of copies of an application, with the ability to maintain certain discrepancies between each of these copies (such as installed plugins, different CSS) as we update the application in the future. What I'm asking is extremely similar to the way StackExchange 1.0 functioned, where a user could configure several options and a customized version of the StackExchange would soon be up and running. How is this accomplished?

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• How can I get valgrind to tell me the address of each non-freed block of memory?

  - by James

  Valgrind tells me function xxx allocated memory which was not freed. Fine. It's proving more difficult than usual to trace however. To this end I have created numerous: #ifdef DEBUG fprintf(stderr, "something happening:%lx\n", (unsigned long)ptr); #endif So I just need to match these ptr addresses that are displayed with the addresses of non-freed memory. How can I get valgrind to tell me the address of each non-freed block of memory?

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• How to center text in an inline-block span on lte firefox 2?

  - by Knu

  I have 3 spans inside a div. text-align:center isn't working (tried on the parent too) text-align: -moz-center neither (on ff2) i have to use spans no floats -moz-inline-box or -moz-inline-stack ? with -moz-inline-block it's working but the 2nd and 3rd spans clear left… Anyone got an idea? (fixing #6 is an alternative)

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• How to retrieve parent container ID after sorting using Jquery sortable??

  - by user187580

  Hello I have following markup and javascript to sort some items. Items can be sorted within a block or across other blocks. It works but I have a problem in retrieving correct block ID after an item is moved from one block to another. For example, if I move item 1 within "Block 1", I get "I am in Block= block_1" but if I move Item 1 to Block 2 I still get I am in Block 1. But I want to make the block 2 as its parent container. I need to retrieve this id so that I can do some ajax and update the db accordingly. Can you please help me correct this?? <div id="blocks_sortable"> <div id="block_1"> <h2>Block 1</h2> <div class="items_sortable connectedSortable"> <div id="item_1"> <span>Item 1</span></div> <div id="item_2"> <span>Item 2</span></div> <div id="item_3"> <span>Item 3</span></div> </div> </div> <div id="block_2"> <h2>Block 2</h2> <div class="items_sortable connectedSortable"> <div id="item_4"> <span>Item 4</span></div> <div id="item_5"> <span>Item 5</span></div> <div id="item_6"> <span>Item 6</span></div> </div> </div> </div> <script> $("#blocks_sortable").sortable({ }); $(".items_sortable").sortable({ connectWith: '.connectedSortable' , forcePlaceholderSize: true , stop : function(event, ui){ alert("I am in block = "+$(this).parent().attr("id")); } }).disableSelection(); </script> Thank you.

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• Too much data for RSA block fail. What is PKCS#7?

  - by Tom Brito

  Talking about javax.crypto.Cipher; I was trying to encrypt data using Cipher.getInstance("RSA/None/NoPadding", "BC"); but I got the exception: ArrayIndexOutOfBoundsException: too much data for RSA block Looks like is something related to the "NoPadding", so, reading about padding, looks like CBC is the best approach to use here. I found at google something about "RSA/CBC/PKCS#7", what is this "PKCS#7"? And why its not listed on sun's standard algorithm names?

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• why does Visual Studio not enforce try-catch-block implementation?

  - by Pedro

  Coming from Eclipse/Java, I noticed that in VisualStudio/C# it is not mandatory to care about Exceptions. While Eclipse forces the user to implement a try-catch-block or to add a throws declaration, this is not the case in Visual Studio. What is the reason Visual Studio doesn't inform about unhandled exceptions? Can I configure Visual Studio to force me to implement try-catch-blocks, or at least add a compiler-warning?

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• How can I put inside the block the form API that i created?

  - by Edward Pangilinan

  I created a contact form using form api. I want to put it into block. Any idea about this guys? I'm using drupal 6. Thanks.

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• What is the equivalent for try-finally block in workflow foundation?

  - by HuBeZa

  There is a specific activity I want to execute even after exception has thrown, just like a try{}finally{} block. Is it possible in sequential workflow using WF v3.5?

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• How do I write a PL/SQL anonymous block when I have discontinuous blocks?

  - by aryan

  I have to retrieve an ID and last_name from my table, but my ID is not continuous and there no pattern for the gaps. How do I write a PL/SQL anonymous block for this?

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• How to access Session values from layers beneath the web application layer.

  - by Matthew Vines

  We have many instances in our application where we would like to be able to access things like the currently logged in user id in our business domain and data access layer. On log we push this information to the session, so all of our front end code has access to it fairly easily of course. However, we are having huge issues getting at the data in lower layers of our application. We just can't seem to find a way to store a value in the business domain that has global scope just for the user (static classes and properties are of course shared by the application domain, which means all users in the session share just one copy of the object). We have considered passing in the session to our business classes, but then our domain is very tightly coupled to our web application. We want to keep the prospect of a winforms version of the application possible going forward. I find it hard to believe we are the first people to have this sort of issue. How are you handling this problem in your applications?

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• How can I print a certain block/part of a web page?

  - by Ahmed

  How can I print a certain block/part of a web page? Print option to look like Print Screen functionality.

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• Can I write my owm template in TextFormatter used in Logging Application Block in C#?

  - by Arpita

  Can I write my owm template in TextFormatter used in Logging Application Block in C#? Basically I want to write my exception log in atext file and in specific format where I want to include database information and software version.

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• how to block a user from opening new process like internet explorer or firefox?

  - by user124118

  I am looking for a way to block a user from opening new IE or firefox windows. Is there a way to do this using c#. I am looking at system.diagnostics

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• Is the Microsoft Enterprise Library 5.0 Logging Application Block thread safe?

  - by GiddyUpHorsey

  I have some code that will be logging using the Logging Application Block in Enterprise Library 5.0 from different threads. Is the LAB thread safe? Can I log like normal from different threads or will I need to synchronize the logging code so that is only used from one thread at a time?

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• How to show alerts from the application when it is not running?

  - by chaitanya

  Hi, I have an application in which I have to show the alerts for user specied reminders, I am able to show these reminders when my application is running but my problem is i have to show thsese reminders to the user when my application is not running? is it possible to show the alerts or remindsers when the application is running? what i obsered in iphone native applications(messages, emails) it whill show no of unread or new messages at the top right tip of the icon on the desktop and it will keep on updates these count. Can I impplement these king of alerts to my applications? if yes how? it not is there any other to show the alerts when application is not running?

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• Variable scope difference between PHP and C: block scope is not exactly the same?

  - by powerboy

  The following PHP code will output 3. function main() { if (1) { $i = 3; } echo $i; } main(); But the following C code will raise a compile error. void main() { if (1) { int i = 3; } printf("%d", i); } So variables in PHP are not strictly block-scoped?

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• Java ME Application running fine in Emulator but crashing when deployed to N70. Any way to identify

  - by sana

  I have developed a Java ME application for CLDC platform. It works fine when executed in an emulator. But when i deploy it to my N70 phone the application doesn't start at all in the phone. In my application there are some 14 classes and am creating an instance of each and putting them in the vector on application start. The classes just have one variable and 2 methods. Can this creating of lot of instances be the reason for its crashing? Is there any way I can find out the reason why the application is not able to start in the phone?

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• How can I return something early from a block?

  - by ryeguy

  If I wanted to do something like this: collection.each do |i| return nil if i == 3 ..many lines of code here.. end How would I get that effect? I know I could just wrap everything inside the block in a big if statement, but I'd like to avoid the nesting if possible.

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• What does "Contract can't be in try block" mean?

  - by MatthewMartin

  I'm using the 3.5 library for microsoft code contracts public object RetrieveById(int Id) { Contract.Ensures(newObject != null, "object must not be null"); return newProject; //No error message if I move the Contract.Ensures to here //But it isn't asserting/throwing a contract exception here either } I get the compiler message: "Error 18 Contract section within try block in method 'Controller.RetrieveById(System.Int32)'

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• i want to block my http port using .net application............can anybody help me its urgent plzzzz

  - by prasad

  I want to block port 80 in such a way that whenever user clicks on IE the pop-up window should display to enter required information and once he enter's required information and it is valid then and then only he vl be able to access internet so anybody help me....................using C#.NET

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