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• Multiple requests to server question

  - by embedded

  I have a DB with user accounts information. I've scheduled a CRON job which updates the DB with every new user data it fetches from their accounts. I was thinking that this may cause a problem since all requests are coming from the same IP address and the server may block requests from that IP address. Is this the case? If so, how do I avoid being banned? should I be using a proxy? Thanks

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• Mistake in the Asc() VB function?

  - by Alexander

  Hello! Could you please tell why the Asc() function returns incorrect result? Dim TestChar = Chr(128) Dim CharInt = Asc(TestChar) ' this is a mistake on Windows 7 x64. Asc(TestChar) returns 136 instead of 128 I executed this code on another computer and the result was 128. Thanks.

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• Making one value "special"

  - by SplashHit

  What is the "computer science" term for the practice of assigning a special meaning to one of a type's values. For example a numeric variable called "amount_to_transfer" where the special value "0" means "entire account balance" or a date value "spouse_date_of_birth" where "1/1/1800" means "unmarried". I happen to feel that this is quite a bad "smell", but I'd like to have a name for it, and if possible, some blog post or article about why it's bad and how to fix it.

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• Scrollbar moves back after WM_VSCROLL

  - by user146780

  I have a window with its own H and V scrolling. I'm handling the event like this: case WM_VSCROLL: SetScrollPos(hWnd, SB_VERT, (int)HIWORD(wParam), TRUE); break; all I want is for the position of the scroll bar to stay once I release my mouse but what it's doing is just going back to the top after. What am I doing wrong? Thanks

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• pop3 multiline problem

  - by stupid_idiot

  hi everyone, i'm making a client for pop3 and somehow i can't figure out how to handle multiline responses. There is no difference in the first response from server whether it is single or multiline, it always ends with CRLF (considering the usual case) so how do I do I know if I should call recv() once more?

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• How to take snapshot in linux - programmatically C++

  - by bhanuvrat

  I am currently involved in a project which requires me to repeatedly take snapshots of the screen. I am using qt's grabScreen function to do the same. The screen freezes for half a second every time the program takes a snapshot causing the computer to seem to be very slow :( Can anybody suggest me a better method of doing this ?

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• how do i use @var on a function variable?

  - by fayer

  i've got a variable $user that is of data type User (a class). i've got it in a class method so i can't just type: /** * @var User */ $user = Factory::getInstance('User'); because that will work only with class properties, not method variables like in this case. how could i tell netbeans that that variable is of data type User in a method? Thanks!

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• Against the use of "if" statments. Is there always a "clean" alternative?

  - by Zubair

  I have recently seen alot of activity saying that "if" statements should be banned. However in some of the alternatives people are just doing an "if" statement but discussed as a "case" statement, or as an overloaded function in pattern matching languages. Is it really such a clean solution to replace a well understood concept with a more obscure one?

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• What is the rationale for difference between -> and . in c++ ?

  - by Good Person

  I know the difference between the member operator (.) and the member by pointer operator (-). Why did the c++ designers create a different operator for this access? Why can't the compiler figure it out on its own? If you always used a . does any case exist where it is ambiguous whether you mean a member or a member by pointer?

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• When do declarative controls get initialized in parent user controls?

  - by Tony_Henrich

  If I have a user control which has server control label, the label is not initialized if the user control is inherited by another user control. When does the label get initialized? In the case of when its host user control is used as a base user control.

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• How do i use the top keyword in an insert statement?

  - by acidzombie24

  I was using it as LIMIT when i got the exception Incorrect syntax near the keyword 'TOP'. Maybe i can omit it in this case without problem? but if i couldnt where do i put top? INSERT INTO [user_data] (...) SELECT ... @14 WHERE not exists (SELECT * FROM [user_data] WHERE [email] = @15 OR [name] = @16 OR [unconfirmed_email] = @17 TOP 1);

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• Use a specific database depending on condition

  - by nimo

  Can I somehow use a specific database given a specific condition? To clarify I will give a naive example: CASE WHEN @dbnum = 1 THEN USE Db1 ELSE USE DefaultDb END

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• How to send ctrl+z

  - by I__

  How do I convert ctrl+z to a string? I am sending this as an AT COMMAND to an attached device to this computer. Basically, I just to put some chars in a string and ctrl+z in that string as well

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• `export PS1='value'` does not propagate to (Korn) subshells for root?

  - by user319845

  Please consider the following /root/.profile: export PS1=value1 export x=value2 How come the login shell shows the expected prompt (and $x as value2), while the subshells keep showing $x as value2 but $PS1 as '#'? Just in case, I'm trying this under OpenBSD. [Yeah, I know... What on earth am I doing with OpenBSD if I don't know this? Just toying... in an isolated, most definitely non-production VM =).]

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• MySQLi - Should every statement be prepared?

  - by Kerry

  I know its supposed to improve performance and clean strings, but lets say there are no variables? Might just be a SELECT COUNT( `column` ) AS count FROM `table` Should that be prepared? Is there any case that a SELECT statement should not be prepared?

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• Should I focus on java or on C#

  - by Daniel

  My friend started his computer engineering studies this semester, and wants to know if he should focus on Java or C#? While I am more on the Java side of life, I don't know what to answer him unbiased, so If you can give some unbiased statements on this, this would be great.

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• How do I identify or know which control is being referenced in a method?

  - by just_another_coder

  In my specific case, how do I identify or know which UITextField is being referenced in shouldChangeCharactersInRange method? I know the parameter (UITextField*)textField contains the object being referenced, but how do I compare to identify which one it is?

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• How to find whether an element exists in std::map?

  - by Vincenzo

  My use case: map<string, Car> cars; bool exists(const string& name) { // somehow I should find whether my MAP has a car // with the name provided return false; } Could you please suggest the best and the most elegant way to do it in C++? Thanks.

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• sql query help join (i think)

  - by milan

  I am having trouble figuring our how I can get results only when products.published, product_types.published, and product_cats.published = 1 but my query isn't working. Please help: SELECT `products`.`title`, `products`.`menu_id`, `products`.`short_description`, `products`.`datasheet_icon`, `products`.`datasheet`, `products`.`ordering`, `products`.`product_type_id`, CASE WHEN CHAR_LENGTH(`products`.`alias`) THEN CONCAT_WS(':', `products`.`id`, `products`.`alias`) ELSE `products`.`id` END AS slug FROM `products`, `product_cats`, `product_types` WHERE `products`.published=1 AND `product_cats`.published=1 AND `product_types`.published=1 AND `products`.`product_cat_id`='42' AND `product_types`.`id` IN (1,40,48,49,50) GROUP BY `products`.`id` ORDER BY `product_types`.`ordering`, `products`.`ordering`

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• Combine file transfer dialogs

  - by SamuelDavis

  I am considering upgrading my work computer to use windows 8 as the new file transferring feature seems very useful. Unfortunately after installing windows 8 on my home pc to test it out, the files are being transferred in separate dialogs as opposed to this image provided by microsoft. As I am transferring files constantly a single transfer dialog would make things much less confusing. Does anyone know what settings to change to make file transfers appear in the same window?

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• regex part of url

  - by kyle

  So I'm trying to get the id from a url for youtube.. here is the url http://gdata.youtube.com/feeds/api/videos/kffacxfA7G4/related?v=2 then there's also - in the url too. it wouldn't let me post another url but it's the same as above but with the id ucvkO0x-mL4 how can I grab between videos/ and /related (the id) with regex? I tried to use txt2re.com which is what I always use, but it's not working for this case.. thanks!

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• What is the rationale for difference between -> and . in c/c++ ?

  - by Good Person

  I know the difference between the member operator (.) and the member by pointer operator (-). Why did the C designers create a different operator for this access? Why can't the compiler figure it out on its own? If you always used a . does any case exist where it is ambiguous whether you mean a member or a member by pointer?

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• Inserting Cells Into A Table ?

  - by lentlesoup

  How do i go about inserting a cell into a table? For example, i retrieve data from a database using MySql and PHP, how do i then go about inserting a cell into an already scripted table? In my case, how would i insert a cell into a row 150 pixels from the start of the row? example: ___________________________________________ | <--150px--> |cell| |

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• Why Pointers in C++?

  - by viswanathan

  Why do we actually need pointers in C++. Why can we just live with Arrays? Or is it really powerful in the case of data structures like linked lists and binary trees.

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• DirectorySearch.PageSize = 2 doesn't work

  - by Bero

  using (DirectorySearcher srch = new DirectorySearcher(String.Format("(memberOf= {0})",p_Target.DistinguishedName))) { srch.PageSize = 2; SearchResultCollection results = results = srch.FindAll(); int count = results.Count; } count = 3 (THREE) and not 2. Why is that? I don't want to have all results in just one page. I know that PageSize = 2 is silly small but I set that value in this case just for testing purpose (in reality it will be more).

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