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• writing 'bits' to c++ file streams

  - by Sorush Rabiee

  How can i write 'one bit' into a file stream or file structure each time? is it possible to write to a queue and then flush it ? is it possible with c# or java? this was needed when i try to implement an instance of Huffman codding. i can't write bits into files. so write them to a bitset and then (when compression was completed) write 8-bit piece of it each time (exclude last one).

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• PHP MYSQL SIMPLE SEARCH ISSUE

  - by Kunal

  Hi I have a table with the following structure: id int(11), name varchar(250) I have lots of records in the table but when I am trying to find a particluar record which has the following value on the name field: Lorem ipsum d\'olor sit amet The query is simply returning a blank recordset. I am not being able to figure out this weird behaviour, when my query is as simple as follows: SELECT * FROM slot_games WHERE name='Lorem ipsum d\'olor sit amet' Would appreciate your help please! Thanks in advance.

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• Webservice for Watching a Table in SQL server and populating it.

  - by GayaMani

  Can we write a web service to watch a table in sql server. whenever the corresponding table is populated with new records, the new records should appended to the another table which has the same structure of the old one. Is this is possible using webservices if not how to perform this.

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• Copy not null and not empty fields from one object to another object of the same type(Objects are same type) in java

  - by Chinni

  I am using hibernate, struts, extjs in my project. I have a Customer object with these fields: custId, custName, address, phone and in my project from UI side I get an object customer with custName. So I need to update the above object(custName is unique). I have only one object with the same customer name. So I will get that object using customer name (object from DB). Now I have to save the object with the updated customer name. If I save as follows I have Customer Object from UI, is cust Customer cust1 = getCustomerByName(cust.getCustName()); cust.setCustId(cust1.getCustId()); save(cust); If I do this I lose the customer address and phone number. So, how can I copy one object not null or not empty field values to another object of same type. Can any one please help. I just stuck here. It's stopping me to save. Thanks in advance!

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• "Ambiguous column name" error on one particular server

  - by jazbit

  This simple query throws the "Ambiguous column name TaskID" error on one db-server only. This is ridiculous. We tested this with the same database structure on different servers and different versions of ms sql (2005/2008), and it's only THIS particular client's server that throws the error. I'm actually frustrated. SELECT Tasks.TaskID FROM Tasks INNER JOIN TaskHelpers ON TaskHelpers.TaskID = Tasks.TaskID order by TaskID Yes, I know I can put "Tasks.TaskID" into the order by clause, but for some reasons I can't.

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• CListView Control has limited length for column text

  - by Sunscreen

  When I set the column text for CListView more than 271 characters, the rest of my buffer is not present. I set it through LV_COLUMN structure. Is this a known issue for MFC 4.21?

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• confusing java data structures

  - by London

  Maybe the title is not appropriate but I couldn't think of any other at this moment. My question is what is the difference between LinkedList and ArrayList or HashMap and THashMap . Is there a tree structure already for Java(ex:AVL,Black-white) or balanced or not balanced(linked list). If this kind of question is not appropriate for SO please let me know I will delete it. thank you

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• EF programmaticlly insert many to many

  - by ziks

  Hi I have table with this structure ID PK and two columns with FK for example ActivityID and ContactID. I try programmaticlly insert some value in this two FK columns. How can I do this, any help is appriciated.Tnx

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• What Are Collections Implemented As In VB6?

  - by Tom Tresansky

  So a collection in VB6 keeps track of a key for each object, and you can look up the object by its key. Does that mean collections are implemented as some sort of hashtable under the hood? I realize you can have multiple items with the same key in a collection, hence the SOME SORT. Anybody know what type data structure a VB6 collection is supposed to represent?

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• Creating 3rd party library in Android. Need suggestions!!

  - by Lalith

  Hello all, I am planning to create a 3rd party library for android application developers. Also the main concern is I do not want the users to make many changes to their code base. The following are the main things I want to clarify before diving into the project. 1) I want to attach my own event handlers dynamically to the application. As per above limitations I mentioned, I cannot make users put the relevant code in their handlers as I need to support existing applications as well. I found out that we cannot attach more than one event handler per one listener. For example Button.setOnclickListener(somelistener) .. will set one listener. In traditional desktop applications we can add more than one handlers but here if I do one more Button.setOnclickListener(someOtherListener) this one overwrites the previous listener. Is there any way I can attach my own listener along with application's existing listeners dynamically? Also is it really not supported on android yet? 2) Is there any 3rd party alternative that exists already that monitors user's interactions in androidi? 3) If this is not supported now are there any future plans to support this feature? Please let me know about this as I did not get much feedback on Stackoverflow. Any suggestions and workarounds would really help me continue with this project. Regards, Lalith

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• Estimating the size of a tree

  - by Full Decent

  I'd like to estimate the number of leaves in a large tree structure for which I can't visit every node exhaustively. Is this algorithm appropriate? Does it have a name? Also, please pedant if I am using any terms improperly. sum_trials = 0 num_trials = 0 WHILE time_is_not_up bits = 0 ptr = tree.root WHILE count(ptr.children) > 0 bits += log2(count(ptr.children)) ptr = ptr.children[rand()%count(ptr.children)] sum_trials += bits num_trials++ estimated_tree_size = 2^(sum_trials/num_trials)

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• How to learn a new programming language? And how to choose the appropriate language?

  - by Sebi

  Unfortunately my last question was closed, so I reformulated the question: I know this question was here a lot of times and can't be answered at all, but im not looking for a single name, but rather for an advice in my situation. I learned programming with Java and now I'm developing in Java for more or less 5 years (at the university) and I thinks my programming skills their are really ok/average. I have also small experience in C/C++ and C#. Now I have some spare time and I'd like to learn a new language or deepen the knowledge of Java/C/C++. But how to choose the right language to learn? I'd like to learn a language which will be usefull in the future concerning working in a software development business? I know there is no single answer, but I'm sure you could mention some languages that are more usefull than others. And what's the best way to learn such a language efficiently (bearing in mind that one has already learned some other languages)? Just doing tutorials? Or trying to implement a project? Trying to move a Java project to the new language?

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• IPhone .sqlite file place

  - by Infinity

  Hello guys! How can I change the place of the .sqlite file in my directory structure. Now it is in the Documents, but I want it to be in the Library/Preferences. Can you help me please?

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• display php foreach values in div

  - by San82moon

  Hi, I have foreach ($a as $key = $value) { echo $value; } which displays result one below other, like 1234 5678 2010-05-20 5678 1590 2010-05-19 but i want it in a table like structure like 1234 5678 2010-05-20 5678 1590 2010-05-19 how can i do that?

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• T-SQL Query to Get SUM(COUNT())

  - by Ted

  Hi, I am planning to get a report for a table with following table structure: ID RequestDate ----------------------------- 1 2010/01/01 2 2010/02/14 3 2010/03/20 4 2010/01/07 5 2009/03/31 I want the results as: I D_Count RequestDate Sum ----------------------------------------- 2 2010/01 2 1 2010/02 3 2 2010/03 5 Pls help.

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• Keeping the data in memory or sql database

  - by user14322

  I'm trying to learn SQL to store the data rather than reading the file and populating the whole data structure in memory. would it be like reading the data from disk instead of direct memory?

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• At which n does binary search become faster than linear search on a modern CPU?

  - by joeforker

  Due to the wonders of branch prediction, a binary search can be slower than a linear search through an array of integers. On a typical desktop processor, how big does that array have to get before it would be better to use a binary search? Assume the structure will be used for many lookups.

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• Get coordinates of beads covering the surface of a protein

  - by Hefeweizen

  Given a protein structure from the PDB, I would like to generate NS spheres of radius Rs which cover totally the protein surface. Given RS there, NS is the maximum number of spheres so they do not overlap. I would need the coordinates of the center of each sphere. Does anybody know if this has been implemented in some method / program? Or how to do it with scripting. Thanks

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• How to pass the parameter to the function

  - by avaro

  Hi, I have stored procedure that takes input parameter of table type. procedure test( name samptable type); My table has the structure like table: samptable( name chracter varying; address text[]; ) So how shoul i pass the values to the function to fill the table.

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• svn checkout issue....

  - by Ramesh

  Is there a way to create a working copy with all child folders but with out files in it. My repo is very big, I only need the empty directory structure to be created.

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• Moving rails javascript to public while keeping ruby code?

  - by tesmar

  Hi guys, I have a project to move some JS code outside of rails into the public direcotry, but some of it has ruby code embedded, and depends on the values of the variables from the controllers to set some of its code. How can I move it out of the view and still maintain the same structure, or do I need to just rewrite the JS from scratch?

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• purpose of php consutructor

  - by Bharanikumar

  Hi , Am working in the classes and object class structure , but not extream level , Just class and function , then in one place instantiation . that's it , not much big functions like __construct etc , Please tell me very simply , 1.what is th purpose of constructor ad destructor , But i know theoretical explanation school level , But i am expecting something like in real time , which situation we have to use, and is there any example for that please tell me, Regards

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• In Python, is there an easy way to edit xml in place ?

  - by sms169

  Suppose I want to edit a node in xml and edit one of its attributes. I want to be able to do a simple file diff to just see one row changed. Dumping the xml using prettyprint changes the whole xml structure.

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• Prevent cached objects to end up in the database with Entity Framework

  - by Dirk Boer

  We have an ASP.NET project with Entity Framework and SQL Azure. A big part of our data only needs to be updated a few times a day, other data is very volatile. The data that barely changes we cache in memory at startup, detach from the context and than use it mainly for reading, drastically lowering the amount of database requests we have to do. The volatile data is requested everytime by a DbContext per Http request. When we do an update to the cached data, we send a message to all instances to catch a fresh version of all the data from the SQL server. So far, so good. Until we introduced a bug that linked one of these 'cached' objects to the 'volatile' data, and did a SaveChanges. Well, that was quite a mess. The whole data tree was added again and again by every update, corrupting the whole database with a whole lot of duplicated data. As a complete hack I added a completely arbitrary column with a UniqueConstraint and some gibberish data on one of the root tables; hopefully failing the SaveChanges() next time we introduce such a bug because it will violate the Unique Constraint. But it is of course hacky, and I'm still pretty scared ;P Are there any better ways to prevent whole tree's of cached objects ending up in the database? More information Project is ASP.NET MVC I cache this data, because it is mainly read only, and this saves a tons of extra database calls per http request

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• Purpose of PHP constructors

  - by Bharanikumar

  Hi, I am working with classes and object class structure, but not at a complex level – just classes and functions, then, in one place, instantiation. As to __construct and __destruct, please tell me very simply: what is the purpose of constructors and destructors? I know the school level theoretical explanation, but i am expecting something like in real world, as in which situations we have to use them. Provide also an example, please. Regards

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