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• Sanitize json input to a java server

  - by morgancodes

  I'm using json to pass data between the browser and a java server. I'm using Json-lib to convert between java objects and json. I'd like to strip out susupicious looking stuff (i.e "doSomethingNasty().) from the user input while converting from json to java. I can imagine several points at which I could do this: I could examine the raw json string and strip out funny-looking stuff I could look for a way to intercept every json value on its way into the java object, and look for funny stuff there. I could traverse my new java objects immediately after reconstitution from json, look for any fields that are Strings, and stripp stuff out there. What's the best approach? Are there any technologies built for this this task that I tack tack on to what I have already?

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• How do I 'donut cache' in ASP.NET MVC for something more than a date

  - by Simon_Weaver

  All the examples for donut caching I've seen are just like this : <%= Html.Substitute( c => DateTime.Now.ToString() )%> Thats fine if I just want the date, but what other options are there? I know there is a delegate 'MvcSubstitutionCallback' which has the following signature : public delegate string MvcSubstitutionCallback(HttpContextBase httpContext); but RenderAction and RenderPartial returns void so i cant just return them from the delegate method. How can I effectively use this callback for more complex situations. I've looked at both of Phil Haacked's articles here and here, but neither seems to do exactly what I want.

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• How do I shift items in an array in C#?

  - by Andy Evans

  Let's say that I have an array of strings like this: 1, 2, 3, 4, 5, 6, 7, 8 and I want to shift the elements of the array such that The first element always remains fixed Only the remaining elements get shifted like so ... The last element in the array becomes the 2nd element and is shifted through the array with each pass. Pass #1: 1, 2, 3, 4, 5, 6, 7, 8 Pass #2: 1, 8, 2, 3, 4, 5, 6, 7 Pass #3: 1, 7, 8, 2, 3, 4, 5, 6 Pass #4: 1, 6, 7, 8, 2, 3, 4, 5 Any assistance would be greatly appreciated.

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• Do I assign different or the same class id to 32-bit and 64-bit versions of the same IFilter?

  - by sharptooth

  I've implemented my own Microsoft Search IFilter. I need two versions of it - 32-bit and 64-bit for deploying them on corresponding systems. In case of IFilters for any file extension I can only register one IFilter class id. Which means I can only use one version on any system. So having two class ids seems useless - it only makes the automatic installer more complex. Do I reuse the same COM class id for both or do I use different class ids?

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• Batch file: Extracting substring from input parameter to use in IF statement

  - by Neomoon

  This is a very basic example of what I am trying to implement in a more complex batch file. I would like to extract a substring from an input parameter (%1) and branch based on if the substring was found or not. @echo off SETLOCAL enableextensions enabledelayedexpansion SET _testvariable=%1 SET _testvariable=%_testvariable:~4,3% ECHO %_testvariable% IF %_testvariable%=act CALL :SOME IF NOT %_testvariable%=act CALL :ACTION :SOME ECHO Substring found GOTO :END :ACTION ECHO Substring not found GOTO :END ENDLOCAL :END This is what my ouput looks like: C:\>test someaction act =act was unexpected at this time. If possible I would like to turn this in to a IF/ELSE statement and evaluate directly from %1. However I have not had success with either.

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• How to sort a Ruby Hash by number value?

  - by dustmoo

  Hi everyone, I have a counter hash that I am trying to sort by count. The problem I am running into is that the default Hash.sort function sorts numbers like strings rather than by number size. i.e. Given Hash: metrics = {"sitea.com" => 745, "siteb.com" => 9, "sitec.com" => 10 } Running this code: metrics.sort {|a1,a2| a2[1]<=>a1[1]} will return a sorted array: [ 'siteb.com', 9, 'sitea.com', 745, 'sitec.com', 10] Even though 745 is a larger number than 9, 9 will appear first in the list. When trying to show who has the top count, this is making my life difficult. :) Any ideas on how to sort a hash (or an array even) by number value size? I appreciate any help.

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• netbeans custom jax-ws stubs..

  - by Sam

  Hi, I am using netbeans 6.9. I have made a JAX-WS service that returns a complex type, I have also made a JAX-WS client to consume it. The JAX-WS system automaticly creates a class for the client, inferred from the WSDl spec. I want to make my own class for this using JAXB annotations, so that I can add some extra functions to it. How do I go about replacing the autogenerated file with my own one? Could I also use the same class in the service to control how it is transmitted? Thanks!

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• How to read an XML file with Java?

  - by Yatendra Goel

  I don't need to read complex XML files. I just want to read the following configuration file with a simplest XML reader <config> <db-host>localhost</db-host> <db-port>3306</db-port> <db-username>root</db-username> <db-password>root</db-password> <db-name>cash</db-name> </config> How to read the above XML file with a XML reader through Java?

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• MVVM - several workspaces in a workspace seems not to make sense...

  - by msfanboy

  So how do you display complex aggregated ViewModels whose Models have relations to each other? NO wpf disciple ever spoke about that, guess why its not possible... Do you think thats true? Don`t understand me? Look: A CustomerViewModel has many OrderViewModel and those many ProductViewModel. You have 3 Workspaces to enter the new data for all 3 ViewModels AND you have 3 listboxes/combobo/datagrid to multiselect Collections of type = customerVMs, orderVMs and productVM`s. That the UI makes sense to the user he should not need to turn off/on the workspace every new customer/order/product is added what is a bad user experience, how do you do this typical LOB application requirement?

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• Why isn't UTF-8 allowed as the "ANSI" code page?

  - by dan04

  The Windows _setmbcp function allows any valid code page... (except UTF-7 and UTF-8, which are not supported) OK, not supporting UTF-7 makes sense: Characters have non-unique representations and that introduces complexity and security risks. But why not UTF-8? As I understand it, the "ANSI" versions of the Windows API functions convert their arguments to UTF-16, call the equivalent "W" function, and convert any strings in the output to "ANSI". This is what I've been doing manually. So why can't Windows do it for me?

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• Javascript Hex String to Image

  - by Gunnar Hoffman

  Hello everyone. I'll cut right to the chase. Right now I am developing a web based application. It has a PHP REST based architecture that serves up XML documents. On many of these documents attributes are hex encoded picture strings. On the client side jQuery AJAX fetches an XML document with a picture in it. I need to display said picture in some <img> tags. However my knowledge on such methods is lacking so here I am asking for help. Goal: JavaScript String variable in hex or base64 HTML displayed image. Cross browser is required, or a hack for the ones that do not support it is fine. Thanks, Gunnar

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• Why .NET Boolean has TrueLiteral and TrueString?

  - by user309937

  Why in Boolean type there are two fields with the same value? internal const int True = 1; internal const int False = 0; internal const string TrueLiteral = "True"; internal const string FalseLiteral = "False"; and public static readonly string TrueString; public static readonly string FalseString; static Boolean() { TrueString = "True"; FalseString = "False"; } in reflector generated code, methods don't use those strings but: public string ToString(IFormatProvider provider) { if (!this) { return "False"; } return "True"; } would't it be better to use those const values?

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• doubt about radio button mysql php beginner

  - by Marcelo

  Hi, i'm an engineering student and i'm developing a simple software based on html,php and mysql. I learned this topics on w3schools, i know only the basics. I tired to search about this in this website but I thought the doubts about php,mysql, radio buttons but they were much more complex than I need, and that i could understand. Sorry for the english. (Q1)Ex: $email=$_REQUEST['email'] , in this case the input is text, if it where like a radio button for ex: sex: male or female, how would it be? (Q2) what would be the type of this field (for exemple sex in question 1) in the database: text, int, varchar ? thanks for the attention

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• Dollar ($) sign in password string treated as variable

  - by ncatnow

  Spent some time troubleshooting a problem whereby a PHP/MySQL web application was having problems connecting to the database. The database could be accessed from the shell and phpMyAdmin with the exact same credentials and it didn't make sense. Turns out the password had a $ sign in it: $_DB["password"] = "mypas$word"; The password being sent was "mypas" which is obviously wrong. What's the best way to handle this problem? I escaped the $ with a \ $_DB["password"] = "mypas\$word"; and it worked. I generally use $string = 'test' for strings which is probably how I avoided running into this before. Is this correct behavious? What if this password was stored in a database and PHP pulled it out - would this same problem occur? What am I missing here...

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• Solve equation from string to result in C

  - by Alexandre Cassagne

  Hi, I would like to know if anyone has info or experience on how to do something which sounds simple but doesn't look like it when trying to program it. The idea is : give a string containing an equation, such as : "2*x = 10" for example (this is simple, but it could get very complex, such as sqrt(54)*35=x^2; and so on....) and the program would return x = 5 and possibly give a log of how he got there. Is this doable ? If so, does anyone have a lead ? For info there is this site (http://www.numberempire.com/equationsolver.php) which does the same thing in PHP, but isn't open source. Thanks for any help !

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• How to use CCR, DSS, VPL (aka Microsoft Robotics Development Studio) outside robotics?

  - by basilmir

  How to use CCR, DSS, VPL (aka Microsoft Robotics Development Studio) outside robotics? I am looking for guidance in this field. I have tried all the examples and find the framework intriguing. Can anyone post other uses and examples, outside robotics? PS. I am looking for someone to explain some of the more complex stuff to me. I have questions regarding different implementations. If anyone is interested, i am willing to pay for a one to one talk (consulting) on the advanced topics. You can reach me via email, same name as here.

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• Version control for Adobe Flash projects

  - by Guss

  I'm working with a very complex Flash project which is part of a full range of services that we deploy for the use of our clients. For most of our software sources (Java, PHP, Javascript, HTML and a some supporting scripts in other languages) we use subversion for version control and management, so we do the same for our Flash projects, even though we gain little benefits from version controlling that (except being able revert to previous versions) as FLA files are stored as just binaries which we cannot get meaningful diffs from. We're putting as much code as we can into AS files which we can properly manage using subversion, but due to the requirements of our architecture and our deployment strategy (both we cannot change because of our clients needs), we still maintain a large collection of FLA files that we need to manage. I've looked at Adobe Version Cue and while I do not really understand what it does in terms of version control, will moving our Flash projects to hosting on Version Cue will give me better control then I currently get from Subversion? Also - if people can share their experience and suggestions regarding version control of Flash projects, it will be very helpful.

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• complicated sql query !!

  - by user507779

  LookupTable: userid, mobileid, startedate, enddate , owner 1 , 1 , 12-12-2000, 01-01-2001, asd 2 , 2 , 12-12-2000, 01-01-2001, dgs 3 , 3 , 02-01-2001, 01-01-2002, sdg 4 , 4 , 12-12-2000, 01-01-2001, sdg UserInfoTable: userid, firstname, lastname, address 1 , tom , do , test 2 , sam , smith , asds 3 , john , saw , asdasda 4 , peter , winston , near by Mobile: Mobileid, Name , number, imeinumber 1 , apple , 123 , 1111111 2 , nokia , 456 , 2222222 3 , vodafone , 789 , 3333333 CallLogs: id , Mobileid, callednumbers (string), date , totalduration 1 , 1 , 123,123,321 , 13-12-2000 , 30 2 , 1 , 123,123,321 , 14-12-2000 , 30 3 , 2 , 123,123,321 , 13-12-2000 , 30 4 , 2 , 123,123,321 , 14-12-2000 , 30 5 , 3 , 123,123,321 , 13-12-2000 , 30 6 , 3 , 123,123,321 , 14-12-2000 , 30 1 , 1 , 123,123,321 , 13-01-2002 , 30 2 , 1 , 123,123,321 , 14-01-2002 , 30 I want a query which will return me the following: firstname, lastname, mobile.name as mobilename, callednumbers (as concatinated strings from different rows in CallLogs table) and need it for year 2000 example: firstname, lastname, mobilename, callednumbers tom , do , apple , 123,123,321, 123,123,321 sam , smith , nokia , 123,123,321, 123,123,321 peter , winston , apple , 123,123,321, 123,123,321 any help will be highly appreciated...

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• URL valid characters. java to validate.

  - by Chez

  a string like: 'www.test.com' is good. a string like: 'www.888.com' is good. a string like: 'stackoverflow.com' is good. a string like: 'GOoGle.Com' is good. why ? because those are valid urls. it does not necessarely matter if they have been registered or not. now bad strings are: 'goog*d\x' 'manydots...com' why because you can't register those urls. if I have a string in java which is supposed to be a good url what's the best way to validate it ? thanks a lot

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• QtScript: Passing an array of objects to C++

  - by Plow

  Hi, I want to pass an array of objects from my QtScript to C++ but I have not been able to figure out how to achieve this. As soon as I create an array, the elements inside it are converted to strings before I can access them. This is what I have been trying so far: class myObject : public QObject, public QScriptable { Q_OBJECT public Q_SLOTS: void test(QVariantList list); }; void myObject::test(QVariantList list) { for (QVariantList::const_iterator it = list.begin(); it != list.end(); ++it) { QVariant element = *it; qDebug() << "List element type: " << element.typeName(); if (element.canConvert<QVariantMap>()) { // Not getting here } } } The following script myObject.test([{"foo": 1, "bar": 2}, {"baaz": 3, "baaaz": 4}]); prints List element type: "QString" List element type: "QString" I am using Qt 4.6...

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• Parameters with dots on the URI

  - by robertokl

  In my application, there is a resource, machine, and a nested resource from machine: ip. I want to be able to access the URI of an Ip typing the ip address. The URI should be something like this: /machines/m123/ips/192.168.0.1.xml Where "m123" is the name of the machine and "192.168.0.1" is one of the ips of that machine. The problem here is that rails miss understand the dots from the ip and the format. When I try to access this page, i get: No route matches "/machines/m123/ips/192.168.0.1.xml" And if I replace the dots for any other character it works, witch means that rails isn't handling the dots on the URI. Is there any way to enter a more complex regexp on the routes to make sure rails can treat it the way I want? I'm using rails 2.3.5 and ruby 1.8.7. Thank you.

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• Using table-of-contents in code?

  - by AareP

  Do you use table-of-contents for listing all the functions (and maybe variables) of a class in the beginning of big source code file? I know that alternative to that kind of listing would be to split up big files into smaller classes/files, so that their class declaration would be self-explanatory enough.. but some complex tasks require a lot of code. I'm not sure is it really worth it spending your time subdividing implementation into multiple of files? Or is it ok to create an index-listing additionally to the class/interface declaration?

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• Can Entity Framework be used for the purpose of entity/schema definition at application runtime?

  - by Kabeer

  Hello. Can 'Entity Framework' be used for the purpose of entity definition at application runtime? Ok, to make it simple, here is what I want to achieve: My application is a product. I should be able to define entities at runtime on the basis of inputs gathered from an 'authoring' user (in effect this means 'model first' approach). These entities are of course persistable. Further, after having defined the entities and their relationships, I should be able to make complex queries across them for many reasons, including reports. Is the above possible and how? So far what I have realized is that there is a dependency on Visual Studio.

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• What software analogies have helped you?

  - by Galwegian

  I have often enjoyed the use of analogies in understanding a software scenario or problem. For example, to understand the concept of public key encryption, the 'locked mailbox' analogy or similar is often used as an aid: An analogy for public-key encryption is that of a locked mailbox with a mail slot. The mail slot is exposed and accessible to the public; its location (the street address) is in essence the public key. Anyone knowing the street address can go to the door and drop a written message through the slot; however, only the person who possesses the key can open the mailbox and read the message. My question is: What analogies have you used or heard of in your career that have given you that "Eureka" moment with a complex concept? EDIT: If you have a good one, don't just state the name, please share with the group!

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• How to move from untyped DataSets to POCO\LINQ2SQL in legacy application

  - by artvolk

  Good day! I've a legacy application where data access layer consists of classes where queries are done using SqlConnection/SqlCommand and results are passed to upper layers wrapped in untyped DataSets/DataTable. Now I'm working on integrating this application into newer one where written in ASP.NET MVC 2 where LINQ2SQL is used for data access. I don't want to rewrite fancy logic of generating complex queries that are passed to SqlConnection/SqlCommand in LINQ2SQL (and don't have permission to do this), but I'd like to have result of these queries as strong-typed objects collection instead of untyped DataSets/DataTable. The basic idea is to wrap old data access code in a nice-looking from ASP.NET MVC "Model". What is the fast\easy way of doing this?

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