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• DPAPI + Entropy

  - by TWith2Sugars

  We have a WPF app that allows our users to download encrypted content and we want to provide the ability to decrypt this content off-line. The idea is to download the keys and store them using the DPAPI but I'm having trouble with the entropy parameter. Is there any way to generate an entropy to consistently use for the DPAPI functions with out hardcoding/storing them? Thanks Tony

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• How do char arrays work in C?

  - by eSKay

  #include<stdio.h> int main() { char a[5]="hello"; puts(a); //prints hello } Why does the code compile correctly? We need six places to store "hello", correct?

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• Instantiate a JavaScript Object Using a String to Define the Class Name

  - by Kirk

  Here's what I'm trying to do -- this is pseudo code and doesn't work. Does anyone know how to accomplish this for reals: // Define the class MyClass = Class.extend({}); // Store the class name in a string var classNameString = 'MyClass'; // Instantiate the object using the class name string var myObject = new classNameString();

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• Problem using date when querying the appengine datastore

  - by manu1001

  I'm running this query: SELECT FROM com.Data WHERE entryDate DATE('2010-3-16') I get this error: org.datanucleus.store.appengine.query.DatastoreQuery$UnsupportedDatastoreFeatureException: Problem with query DATE('2010-3-16'): Unsupported method while parsing expression: InvokeExpression{[null].DATE(Literal{2010-3-16})} The same query works when I use it on the admin console. But it does not work for code (java), either locally or when deployed. Any ideas?

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• objective c iphone : can we view console log on device

  - by amarsh-anand

  is there a way to view the console output as we are running an iphone App on the device? If not directly, is there an app on the App store which lets you view the log after the App has finished running?

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• Pound symbol not displaying on web page

  - by Gublooo

  Hello I have a mysql database table to store country name and currency symbol - the CHARSET has correctly set to UTF8. This is example data inserted into the table insert into country ( country_name, currency_name, currency_code, currency_symbol) values ('UK','Pounds','GBP','£'); When I look in the database - the pound symbol appears fine - but when I retrieve it from the database and display it on the website - a weird square symbol shows up with a question mark inside instead of the pound symbol. You can look at it here - http://www.didyouswipe.com/profile/view-profile/user_id/181 Please advice Thanks

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• how to make Sliding window model for data stream mining?

  - by zeedotcom

  we have a situation that a stream (data from sensor or click stream data at server) is coming with sliding window algorithm we have to store the last (say) 500 samples of data in memory. These samples are then used to create histograms, aggregations & capture information about anomalies in the input data stream. please tell me how to make such sliding window.

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• Openning Blob Data stored in Sqlite as a File with Tcl/Tk

  - by dmullins

  Hello: I am using the following tcl code to store a file from my deskstop into a Sqlite database as blob data ($fileText is a path to a text file): sqlite3 db Docs.db set fileID [open $fileText RDONLY] fconfigure $fileID -translation binary set content [read $fileID] close $fileID db eval {insert into Document (Doc) VALUES ($content)} db close I have found many resources on how to open the blob data to read and write to it, but I cannot find any resources on openning the blob data as a file. For example, if $fileText was a pdf, how would I open it, from Sqlite, as a pdf? Thanks, DFM

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• Concat E4X expressions in ActionScript 3

  - by loto

  Is there any way to concatenate E4X expressions? If I store "half" a path in a variable, can I concatenate the way I do with Strings?

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• Replacing ORM schema without dropping the entire data

  - by Udi

  Hey, I'm using OpenJPA as a JPA provider. Is there a way in which I can recreate the database tables (When an entity changes) without dropping the entire data? When an entity changes, I drop and create every table in the store, and obviously lose the data within. Is there a tool or product to keep the data somehow? Thanks, Udi

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• Serialize or json in PHP?

  - by kavoir.com

  So I need to encode an array in PHP and store it in plain text in MySQL database, my question is should I use serialize() or json_encode()? What are the advantages and disadvantages of each of them? I think either of them would do in this situation. But which one would you prefer and why? If it is for something other than an array?

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• Encyption in DATA access block

  - by Sathish

  I am using enterprise library DATA access block in my application and now i want to Encrypt the connection string and store it in the Config file and consume it in my application after decrypting the same. How can i do this

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• Does the iphone sdk support playing an mp4 from rtmp stream?

  - by Jim Geurts

  Does the iphone sdk support playing mp4 files from RTMP streams? I am looking to store the files in CloudFront (in a bucket marked to stream) and would like to have an iphone app be able to play them. Is this possible, or am I better off storing the files as mp3 on CloudFront and not enabling streaming via RTMP?

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• logic for a php function

  - by danish hashmi

  i need to make a php code for checking hotel room avaibility where user from the present day can book rooms upto 90 days or less and there are total 30 rooms available in the hotel,so if once i store the data for a user like his booking from one date till another next time if i want to check the avaibility how should i do it in php,what would be the logic. obviously i simple query like this isn't correct for eg $this->db->select('*') ->from('default_bookings') ->where('booking_from <',$input['fromdate']) ->where('booking_till >',$input['tilldate']);

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• Get Auto Increment value with MySQL query

  - by James Simpson

  I currently have a database with over 6 million rows and growing. I currently do SELECT COUNT(id) FROM table; in order to display the number to my users, but the database is getting large and I have no need to store all of those rows except to be able to show the number. Is there a way to select the auto_increment value to display so that I can clear out most of the rows in the database? Using LAST_INSERT_ID() doesn't seem to work.

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• ASP.NET Where can I write to without modifying permissions?

  - by LeeW

  Where can I write to without modifying site permissions? I need to store a value on the server that will remain when all sessions have closed and can be re-read when a new session is started. I need to make sure that no site permissions need to be changed so the location can be written to by anonymous users and any authenticated user. Does such a place exist? Thanks Lee

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• What is the general approach to implement the serial number and activation protection for Java Appli

  - by ziang

  I want to create a Java Desktop Application and want to employ some mechanism to protect my software from illegal copy. What is the general best approach to implement the serial number and activation protection for Java Application? If the user can activate the software correctly, where to store the activation info? Thanks.

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• How to auto generate id.

  - by user267047

  hello Dear i just need to auto generate id like abc101,abc102,abc103,....abc10n and it should be store in DB table. and also it should be show in any textbox at runtime . Please give a proper solution.... Special Thanks in advance :) Regards. Pradeep Kodley

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• LINQ Guid toString()

  - by Sevki

  Hi this seems like it should work, from something in collectionofsomestuff select new SelectListItem(){Text = Name, Value = SomeGuid.ToString(), Selected = false}; When I try to do this it doesn't work give me error LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression. Is there a workaround?

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• how to view the job in text in sql server 2005

  - by kumar

  hi, how to view the job in text in sql server 2005? Ex: for store procedure we use sp_helptext .is there any keyword for job in sql server 2005 regards kumar

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• gcc memory alignment pragma

  - by aaa

  hello. Does gcc have memory alignment pragma, akin #pragma vector aligned in Intel compiler? I would like to tell compiler to optimize particular loop using aligned loads/store instructions. Thanks

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• MYSQL update query php

  - by bell

  I am trying to use an update query to change values held in a database, the new values I am trying to store are held in php variables. I'm not sure what it is I'm doing wrong. mysql_query("UPDATE user SET status='full' WHERE user_id = '$user_id'")or die(mysql_error()); thanks in advance

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• array size for extendible hashing

  - by Phenom

  If I want to use extendible hashing to store a maximum of 100 records, then what is the minimum array size that I need? I am guessing that an array of 100 would be sufficient, but I could be wrong. I also suspect that I can use a smaller array.

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• ASP.NET user database without web.config connection strings

  - by vikp

  Hi, I'm wondering whether it's possible to use built in ASP.NET application services (aspnet_user, aspnet_role etc table) without specifying a connection string in a web.config. At the moment I store connection strings externally, but I keep finding hard-coded connection strings all over the web.config xml, various providers etc. It's driving me crazy. Thank you

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• how to use conditional select query ? in sqlserver

  - by Arunachalam

  how to use conditional select query ? in sqlserver i have a column in which i store date type variable .now i should retrieve one value from that column and find the difference with the curent_timestamp and if the difference is less than 10 mins i should a return 1 and if more than 10 mins i should return 0.is it possible ? 05-12-2010 13.58.30 - 05-12-2010 13.56.30 here the difference is 2 so it should return 1 .

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