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  • Is there a way to prevent an ASP.Net webapp from clearing out page variables on VB side?

    - by Chapso
    I have a webapp in ASP.Net with a VB codebehind. I need a List variable I have declared to persist as long as the person is on the page, but currently any time a control posts back to the code, everything is cleared out. I am completely new to ASP.net, so I have no idea if this is even possible. Can it be done with a Session variable? Those seem to me to be limited to base types, but I could be wrong.

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  • Will the Order of my Associative Array be maintained from PHP to Javascript?

    - by Colin
    In PHP I'm running a mysql_query that has an ORDER BY clause. I'm then iterating through the results to build an associative array, with the row_id as the key. Then, I'm calling json_encode on that array and outputting the result. This page is loaded with AJAX, and defined in a Javascript variable. When I iterate through that Javascript variable, will I still have the order that was returned from the mysql_query?

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  • PHP - Read TXT from specific position

    - by user1466766
    I'm having trouble with PHP text parsing I have a txt file which has this kind of information: sometext::sometext.0 = INTEGER: 254 What i need is to get the last value of 254 as variable in PHP. in this txt file this last value can change from 0 to 255 "sometext::sometext.0 = INTEGER: " this part doesn't change at all. It has a length of 36 symbols, so i need get with PHP what is after 36 symbol into variable. Thank you.

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  • How to combine a list of choices to determine which select statement

    - by Larry
    I have a mysql db and am using php 5.2 What I am trying to do is offer a list of options for a person to select (only 1). The chosen option will cause a select, update, or delete statement to be ran. The results of the statement do not need to be shown, although, showing the old and then the new would be nice (no problems with that part tho'.). Pseudo-Code: Assign $choice = 0 Check the value of $choice // This way, if it = 100, we do a break Select a Choice:<br> 1. Adjust Status Value (+60) // $choice = 1<br> 2. Show all Ships <br> // $choice = 2 3. Show Ships in Port <br> // $choice = 3 ... 0. $choice="100" // if the value =100, quit this part Use either case (switch) or if/else statements to run the users choice1 If the choice is 1, then run the "Select" statement with the variable of $sql1 -- "SELECT .... If the choice is 2, then run the "Select" statement with the variable of $sql2 --- SELECT * FROM Ships If the choice is 3, then run the "Select" statement with the variable of $sql3 <br> .... If the choice is 0, then we are done. I figured the (3) statements would be assigned in php as: $sql1="...". $sql2="SELECT * FROM Ships" $sql3="SELECT * FROM Ships WHERE nPort="1" My idea was to use the switch statement, but got lost on it. :( I would like the options to be available over and over again, until a variable ($choice) is selected. In which case, this particular page is done and goes back to the "Main Menu"? The coding and display, if I use it, I can do. Just not sure how to write the way to select which one I want. It is possible that I would run all of the queries, and other times, only one, so that is why I would like the choice. An area I get confused in is the proper forms to use such as -- ' ' " " and ...?? Not sure the # of options I will end up with, but it will be more than 5 but less than 20 / page. So if I get the system down for 2-3 choices, I can replicate it for as many as I may need. And, as always, if a better way exists, I am willing to try it. Thanks again... Larry

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  • urgent..haskell mini interpreter

    - by mohamed elshikh
    i'm asked to implement this project and i have problems in part b which is the eval function this is the full describtion of the project You are required to implement an interpreter for mini-Haskell language. An interpreter is dened in Wikipedia as a computer program that executes, i.e. performs, instructions written in a programming language. The interpreter should be able to evaluate functions written in a special notation, which you will dene. A function is dened by: Function name Input Parameters : dened as a list of variables. The body of the function. The body of the function can be any of the following statements: a) Variable: The function may return any of the input variables. b) Arithmetic Expressions: The arithmetic expressions include input variables and addition, sub- traction, multiplication, division and modulus operations on arithmetic expressions. c) Boolean Expressions: The Boolean expressions include the ordering of arithmetic expressions (applying the relationships: <, =<, , = or =) and the anding, oring and negation of Boolean expressions. d) If-then-else statements: where the if keyword is followed by a Boolean expression. The then and else parts may be followed by any of the statements described here. e) Guarded expressions: where each case consists of a boolean expression and any of the statements described here. The expression consists of any number of cases. The rst case whose condition is true, its body should be evaluated. The guarded expression has to terminate with an otherwise case. f) Function calls: the body of the function may have a call to another function. Note that all inputs passed to the function will be of type Int. The output of the function can be of type Int or Bool. To implement the interpreter, you are required to implement the following: a) Dene a datatype for the following expressions: Variables Arithmetic expressions Boolean expressions If-then-else statements Guarded expressions Functions b) Implement the function eval which evaluates a function. It takes 3 inputs: The name of a function to be evaluated represented as a string. A list of inputs to that function. The arguments will always be of datatype Int. A list of functions. Each function is represented as instance of the datatype that you have created for functions. c) Implement the function get_type that returns the type of the function (as a string). The input to this function is the same as in part b. here is what i've done data Variable = v(char) data Arth= va Variable | Add Arth Arth | Sub Arth Arth | Times Arth Arth | Divide Arth Arth data Bol= Great Arth Arth | Small Arth Arth | Geq Arth Arth | Seq Arth Arth | And Bol Bol | Or Bol Bol | Neg Bol data Cond = data Guard = data Fun =cons String [Variable] Body data Body= bodycons(String) |Bol |Cond |Guard |Arth

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  • Why is a c++ reference considered safer than a pointer?

    - by anand.arumug
    When the c++ compiler generates very similar assembler code for a reference and pointer, why is using references preferred (and considered safer) compared to pointers? I did see Difference between pointer variable and reference variable in C++ which discusses the differences between them. EDIT-1: I was looking at the assembler code generated by g++ for this small program: int main(int argc, char* argv[]) { int a; int &ra = a; int *pa = &a; }

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  • need for tcp fine-tuning on heavily used proxy server

    - by Vijay Gharge
    Hi all, I am using squid like Internet proxy server on RHEL 4 update 6 & 8 with quite heavy load i.e. 8k established connections during peak hour. Without depending much on application provider's expertise I want to achieve maximum o/p from linux. W.r.t. that I have certain questions as following: How to find out if there is scope for further tcp fine-tuning (without exhausting available resources) as the benchmark values given by vendor looks poor! Is there any parameter value that is available from OS / network stack that will show me the results. If at all there is scope, how shall I identify & configure OS tcp stack parameters i.e. using sysctl or any specific parameter Post tuning how shall I clearly measure performance enhancement / degradation ?

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  • JavaScript RegEx for div tags

    - by Eiso
    I have a JavaScript variable which holds an HTML page and due to the setup I need to extract everything between <div id="LiveArea"> and </div> from that variable using JavaScript. Any help is greatly appreciated.

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  • Is there a Moria like theme for Visual Studio 2010?

    - by Junior Mayhé
    Is there some cool Moria like theme for Visual Studio 2010? Mine is highlighting gray font with gray background! I just can't configure it on Tools-Options-Environment-Fonts and Colors menu. Visual Studio doesn't seem to show an item for this "highlighting keyword/tag system". You select a variable on variable called myVar, and it highlights all with the same name but with a grayer color and gray background. I just can't read it and can't set it.

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  • Duplicate a image varible GD library

    - by Jigs
    What is the easiest way to duplicate an image variable in PHP. Normally you can simply do $varnew = $varold. But with a GD library variable if I did the above and then edited $varnew then $varold would be effected too. Obviously one way would be to reopen the file or to make a new image and copy it into it. Is there an easier way?

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  • Easiest way to store long term variables with AS3

    - by deeb
    What's the easiest way to store a simple numeric variable on my server and then have a Flash application also hosted on the server read/write the variable? I've seen various xml solutions, but they look too complex for such a simple job. Is there a way to just read/write a simple text file with just AS3 and no middle-ware?

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  • Maven. What to do with "homeless" jars?

    - by Jake
    I have some proprietary.jar that I need to include in my project, but I don't wish to install it to the local repository. What I did initially was to put the jar into version control in my project's lib/ folder, and then specify the Maven dependency as: <!-- LOCAL DEPENDENCY --> <dependency> <groupId>topsecret</groupId> <artifactId>proprietary</artifactId> <version>0.0.1</version> <scope>system</scope> <systemPath>${basedir}/lib/java/proprietary.jar</systemPath> </dependency> However, this becomes a big problem when my project becomes someone else's dependency. Maven will not be able to validate this POM because the path is not absolute. What is the best way to overcome this problem?

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  • Different types for declaring pointer variables

    - by viswanathan
    Consider the below 2 declarations. appears next to the datatype and not next to variable char* ptr1, * ptr2, * ptr3; //all 3 are pointers appears next to the variable and not next to datatype char *ptr1,*ptr2,*ptr3; //again al 3 are pointers Is there any difference in intepretation between the 2 declarations. I know there is no difference in the variables. What is the rationale behind introducing void pointers?

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  • In FitNesse, can variables be defined in terms of other variables?

    - by Dan Haywood
    In FitNesse, can variables be defined in terms of other variables? I want to do the equivalent of: int a=3; int b=a; To make this concrete, I have a variable defining the date: !define clock.date {2/2/2009} I then want to define some other variable ${other.date} based on it, something like: !define other.date {=${clock.date}=} However, this doesn't work. Is there any way to do this?

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  • C++ - Access array (in main) from methods outside main

    - by John Smith
    I have an array in my main class that holds objects that I need to print out for a menu listing. The array is declared and initialized in main. I need to, however, access the same array in a sub-menu function. If I copy the code (for loop that prints out the values) to the sub-menu, nothing is printed (presumably because it can't access the original array and has made a new, blank one). Is there any way (without making the array a global variable) that I can access the array in this sub-menu? Both the main and the sub-menu function are in the same file and the sub-menu is called from main. Maybe to put it more simply, can I use scope resolution to bring me up one 'level' in scope?

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  • google contacts api service account oauth2.0 sub user

    - by user3709507
    I am trying to use the Google Contacts API to connect to a user's contact information, on my Google apps domain. Generating an access_token using the gdata api's ContactsService clientlogin function while using the API key for my project works fine, but I would prefer to not store the user's credentials, and from the information I have found that method uses OAuth1.0 So, to use OAuth2.0 I have: Generated a Service Account in the developer's console for my project Granted access to the service account for the scope of https://www.google.com/m8/feeds/ in the Google apps domain admin panel Attempted to generate credentials using SignedJwtAssertionCredentials: credentials = SignedJwtAssertionCredentials( service_account_name=service_account_email, private_key=key_from_p12_file, scope='https://www.google.com/m8/feeds/', sub=user_email') The problem I am running into is that attempting to generate an access token using this method fails. It succeeds in generating the token when I remove the sub parameter, but then that token fails when I try to fetch the user's contacts. Does anyone know why this might be happening?

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  • Matlab Correlation Function

    - by Joka
    function letter=read_char(imgn, num_letters) global templates comp=[ ]; for n=1:num_letters sem=corr2(imgn, templates{1,n}); comp=[comp sem]; end vd=find(comp==max(comp)); Can someon please explain what the 'FOR' loop does and how 'vd' is calculated? Also, what is the variable 'comp' and what will it looks like as the array also contains itself and another variable 'sem' which is calculated from the corr2 function. thanks

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  • Is it possible to create nested classes in PHP as it is in C#?

    - by Edward Tanguay
    In C# you can have nested classes like this, which are useful if you have classes which do not have meaning outside the scope of one particular class, e.g. in a factory pattern: public abstract class BankAccount { private BankAccount() {} private sealed class SavingsAccount : BankAccount { ... } private sealed class CheckingAccount : BankAccount { ... } public BankAccount MakeSavingAccount() { ... } public BankAccount MakeCheckingAccount() { ... } } Is this possible in PHP? I've read that it was planned for PHP 5, then cancelled, then planned again, but can't find definitive info. Does anyone know how to create nested classes (classes within the scope of another class) as in the above C# example using PHP 5.3?

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  • How to convert string to XML object in JavaScript?

    - by Jack Roscoe
    Hi, I am aware of this question already existing, but it has given me no luck. I have an application which loads a physicial XML document via the following method: jQuery.ajax( { type: "GET", url: fileName, dataType: "xml", success: function(data) { etc... I parse the XML and convert it into a string which is saved into a variable so that it can easily be stored in a database. How can I now convert the data in this variable back into an XML object so that it can be parsed as such?

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  • Using report viewer, how do I pull from two seperate Datasets

    - by Robert
    I have two datasets I need to pull from, A base that both reports use and then a separate one that only one report pulls from. I get the error Error 12 The Value expression for the text box ‘Textbox9’ refers to the field ‘Name’. Report item expressions can only refer to fields within the current dataset scope or, if inside an aggregate, the specified dataset scope. My best guess is I have to associate them with the correct dataset but I have not been able to find any documentation on this. Can someone please tell me where in the rdlc document I need to code something like name.value, "dataset1" or something similar?

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  • get the length/width of value in a factor

    - by Brandon
    How do you get the length of a variable. I am trying to get the last character of factor but the width/length of the contents is variable. I was trying to do something like this: newvariable <- substr(oldvariable, length(oldvariable) -1, length(oldvariable))

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  • Question regarding to value/reference type of events

    - by Petr
    Hi, On the MSDN, I have found following: public event EventHandler<MyEventArgs> SampleEvent; public void DemoEvent(string val) { // Copy to a temporary variable to be thread-safe. EventHandler<MyEventArgs> temp = SampleEvent; if (temp != null) temp(this, new MyEventArgs(val)); } I do not understand, "copy to temporary variable", isnt it reference type?

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