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• Why is i++++++++i valid in python?

  - by SysAdmin

  I "accidentally" came across this weird but valid syntax i=3 print i+++i #outputs 6 print i+++++i #outputs 6 print i+-+i #outputs 0 print i+--+i #outputs 6 (for every even no: of minus symbol, it outputs 6 else 0, why?) Does this do anything useful? Update (Don't take it the wrong way..I love python): One of Python's principle says There should be one-- and preferably only one --obvious way to do it. It seems there are infinite ways to do i+1

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• Multi-Dimensional Array and ArrayIndexOutOfBoundsException

  - by notset

  Hello, I have a strange problem which I can't fix: A field: private boolean[][][] gaps; Constructor (1st line): gaps = new boolean[NOBARRICADES][WIDTH][HEIGHT]; Constructor (2nd line): for (int i = 0; i < NOBARRICADES; i++) { JAVA throws an error for the 2nd line, saying: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException Does it have anything to do with JAVA syntax (the mistake is in these lines of code) or I should look for the problem somewhere else?

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• Where does code within Script tags go in the resulting AS class?

  - by Hanno Fietz

  I was wondering what happens to the code contained in an <mx:Script> tag. If I define a function tehre, it just becomes a member function of the generated class. But I noticed that it seems OK for the compiler if I just write some (static) method calls there (specifically, I call Font.registerFont()). I feel kind of guilty for doing this, because I have no idea what's really happening and when the code gets executed.

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• Context of Main function in C or C++

  - by Sirish Kumar

  Does the main function we define in C or C++ run in a process or thread. If it runs in a thread, which process is responsible for spawning it

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• Auto-needed classes?

  - by fsdfa

  Suppose I have a class A and a class B. The .h of A, needs the .h of B, and the .h of B needs the .h of A. (need = #include). All .h have the guards: #ifndef _classX_ #define _classX_ ... ... #endif But if I compile the .cpp of A, then when it includes the .h of B, the B class cannot include the .h of A class because the A class has already use the guard. How can i solve this?

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• MySQL: List rows who have one but not another many-to-many relationship

  - by Svish

  Not quite sure how to ask or define this, but can't figure it out. I have three tables like this: persons person_id, first_name, last_name hobbies hobby_id, name persons_hobbies person_id, hobby_id I need to make two lists. Persons that have both hobby A and B, and persons that have hobby A but not B. How can I write these two queries? Can't figure out how to do this with joining and all...

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• C: Convert A ? B : C into if (A) B else C

  - by tur1ng

  I was looking for a tool that can convert C code expressions for the form: a = (A) ? B : C; into the 'default' syntax with if/else statements: if (A) a = B else a = C Does someone know a tool that's capable to do such a transformation? I work with GCC 4.4.2 and create a preprocessed file with -E but do not want such structures in it.

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• Where's "integrated windows authentication" IIS5 checkbox equivalent in IIS in Win7?

  - by Tony_Henrich

  In IIS 5 & 6 there's a tab called "Directory Security" where one can define the authentication access and check the "Integrated windows authentication" checkbox. I can't find the same options in IIS Manager in Windows 7.

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• How to draw a map on a webpage that have links inside some area defined by the map?

  - by Fitoria

  I need to put a map in a webpage and I need that when the users clicks on certain area inside city limits on the map the user is redirected. Wich is the best way without using Flash? Define Hover polingons on a image. SVG on the browser. Some sort of Javascript, jQuery magical plugin out there? Google Maps? And example could be this but It's flash.

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• Is it possible to use 'variables' for css / html element ?

  - by stighy

  Hi, i would like to make 'skinnable' a web site written in asp.net... I explain: for example, i have a 'div' element, and i would like to define a background-color using a variable, not a fixed value. How can i do ? Css ? Or other tecniques ? Thanks

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• Autohotkey to map F5 to Shift+Home and then F5 - eventually executing a single line query in sql server?

  - by puretechy

  Reading the syntax from autohotkey, I am trying to achieve this. But the first step of selecting the entire line is not working:- F5:: send {Shift Home} return I have tried few others too, but its not working. This is not sending Shift+Home combination on pressing F5 key. Please tell me what's wrong with this? Also if possible, what to do next?, as if I will write send {F5} I believe, it will recursively fire this script again and again..

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• jquery file type selector

  - by Adi

  Hi, What is the correct jQuery syntax to only select certain file types? e.g. $("#fragment-1 a[SELECT ONLY ANCHOR TAGS WITH FILE TYPE OF MP3]").hide(); Thanks.

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• How can you identify all events before and after a today in IRB?

  - by Trip

  I for the life of me can't figure out the correct syntax to show the count of events before and after today. Here's my awful and disgusting attempt: Events.find(:all).select {|e| e.date Time.now}.size The trouble is the or < operators don't work with Time.. :D

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• Has anyone found the need to declare the return parameter of a copy assignment operator const?

  - by Keith

  The copy assignment operator has the usual signature: my_class & operator = (my_class const & rhs); Does the following signature have any practical use? my_class const & operator = (my_class const & rhs); You can only define one or the other, but not both.

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• Created query is not supported by my DB

  - by stacker

  I created an application using seam-gen. The created operation to search the DB ends with and exception (syntax error). The query has a where clause like this: lower(barcode0_.barcode_ean) like lower((?||'%')) limit ? Does hibnerate or seam create the where clause which my DB can't understand? Or is there a workaround for SQL statement related issues in seam?

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• How do I generate a RouteLink to a route in a different area?

  - by Max Schmeling

  I have two different areas, and I have a route in one of those areas that is specific to that area, but I need to generate a link to that route using Html.RouteLink from another area (it's how you get over into the new area) but it won't work... It doesn't seem possible to use RouteLink to routes in a different area. What is the best way around this? Should I just define a new route in the other area and name it differently?

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• The table '#sql-5f8_9c' is full

  - by gansodesoya

  hello, im trying to delete a foreign key with the following syntax (5.0.45-community-nt): alter table [table] drop foreign key [fk_name] but I'm getting the folling error: The table '#sql-5f8_9c' is full – 99543 ms any ideas? thanks!

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• how does sizeof work with array in C++

  - by skydoor

  Hi, I was told the array name is a pointer char a[] = "a" but when sizeof(a) = 2 why not it is a size of pointer here? however when I define it like this char* a ="a"; we get sizeof(a) =4; Well, I think I need more information about how does sizeof work with the array names.... Can anyone elaborate that?

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• Store html into MYSql database

  - by jouzef19

  hello I'm try to store String (that contain html ) to mysql database by using Longtext data type. but its always says "You have an error in your SQL syntax". (note : i tried to store normal text , and its work)

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• Which is easiest solution for hover images

  - by Mirage

  I am looking for some easy jquery solution for hover images. Like if i define a class. them jquery should get the current image like abc.png then chnage that to abc_on.png and then put that to on hover image How can i do that. i don't want to add function for every button. Just one function and it do all. My Images all usually imagename.png or imagename_on.png

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• Whys is this event declared with an anonymous delegate?

  - by John_Sheares

  I have seen people define their events like this: public event EventHandler MyEvent = delegate{}; Can somebody explain how this is different from defining it without it? Is it to avoid checking for null when raising the event?

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• how to reuse a CASE in the WHERE ?

  - by Thibault Witzig

  Hello I'm trying to do a request that looks like this SELECT field1, field2, field3 = CASE WHEN field2 = 'something' THEN 'something' WHEN field1 IS NOT NULL and field2 IS NULL THEN 'somethingElse' ELSE NULL END FROM SomeTable WHERE field3 IS NOT NULL This results in a syntax error. I have to rewrite the CASE in the WHERE instead of just refering to it. Is there a better way to achieve this ? And out of curiosity, why is "WHERE field3 IS NOT NULL" refused while for example "ORDER BY field3" would pass ?

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• spliting the string

  - by prince23

  hi, i have an string like this string strdate =@"5/2/2006"; which is in a form of month/day/year i need to display it in a form of like this 02-05-2006 how do i format the data like this if the value is like this 12/28/2005 it should be displayed like this 28-12-2010 i know we should be splitting the data based on that we should do it. i am not getting the syntax how to do it . any help would be great

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• when to use const char *

  - by djones2010

  If i have a function api that expects a 14 digit input and returns a 6 digit output. I basically define the input as a const char *. would that be the correct and safe thing to do? also why would I not want to just do char * which I could but it seems more prudent to use const char * in that case especially since its an api that i am providing. so for different input values I generate 6 digit codes.

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• no autocompletion for symfony getTable() function?

  - by fayer

  if i use Doctrine_Core::getTable('User')- i will have no auto completion. isnt it better to just use User:: for autocompletion? and of course i have to define the methods static what is the benefit with using getTable except that i can use a non static method?

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