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  • Alternative for my preg_replace code

    - by Ben Sinclair
    Here is my code... basically it finds any page-NUMBER- within a variable and then replaces it with a page url from an array $content_text = preg_replace("/page-(\d+)-/sie", '$pageurl[$1]', $content_text); It works a treat until the NUMBER it finds isn't in the array and it returns an error... Is there another efficient way I could do this instead? I liked my code above because it was simple but I may have to use more complex code...

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  • MySQL Basic about relationship

    - by Roberto
    Hi all! My doubt is about how to treat the follow thing: I have a system where a user belong to a company, and this user have their clients. How is the right way to get a list of all company clients and the follow user name?? In the client table where i have a field with the one of this relations: A company_id and user_id field Just company_id field Just user_id field cause user table have the company_id??? Something else... Tkz Roberto

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  • How do you solve the 15-puzzle with A-Star or Dijkstra's Algorithm?

    - by Sean
    I've read in one of my AI books that popular algorithms (A-Star, Dijkstra) for path-finding in simulation or games is also used to solve the well-known "15-puzzle". Can anyone give me some pointers on how I would reduce the 15-puzzle to a graph of nodes and edges so that I could apply one of these algorithms? If I were to treat each node in the graph as a game state then wouldn't that tree become quite large? Or is that just the way to do it?

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  • joining null in MS SQL server, Oracle and informatica

    - by jest
    hi! I've two tables to join with a column(say emp_id)..if emp_id in both the tables have null values, how'll MS SQL server and Oracle treat??? Coz, i read that informatica will neglect the NULL rows when joining..if i handle the null, by substituting -1, a cross-join will happen which i don't want.. what can i do here? I cannot completely neglect the rows which has NULL. Thanks

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  • Where are VS/TFS 2010 DIFF options at?

    - by Jaxidian
    I'm newish to TFS and am working with VS and TFS 2010 RC releases. In every other DIFF tool I've used in the past I have had options for configuring how to treat whitespace differences, among other things. Where are these options when working with VS2010 and TFS2010? Thanks!

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  • Blittable Value Types

    - by Michael Covelli
    Here is a list of blittable types. It contains Int32 and Int64. But I don't see just plain "int" on the list. How does C# treat the plain "int" type? Does it just get replaced with Int32 or Int64 depending on the system? Or is there a subtle difference? Will using "int" ever cause a performance hit for marshalling?

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  • How do I register a server side click on an HTMLGenericControl?

    - by Brian Scott
    I'm looking for a reliable mechanism to generate a server side postback handler for an HTMLGenericControl such as an . I have some markup that I do not wish to change and would prefer to treat this in the same fashion as a standard .Net server control. Also, I know I can use a template based control to place some .Net controls within the markup as hidden and then trigger their click events from a client side click proxy. However, I'm really enquiring as to whether this can be done better.

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  • Immutable Dictionary overhead?

    - by Roger Alsing
    When using immutable dictionaries in F# , how much overhead is there when adding / removing entries? Will it treat entire buckets as immutable and clone those and only recreate the bucket whos item has changed? Even if that is the case, it seems like there is alot of copying that needs to be done in order to create the new dictionary(?)

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  • Canceling BackgroundWorker within the Thread

    - by Mike Wills
    I have a longer running multi-step process using BackgroundWorker and C#. I need to be sure that each step is completed successfully before moving on to the next step. I have seen many references to letting the BackgroundWorker catch errors and canceling from clicking on a Cancel button, but I want to check for an error myself and then gracefully end the process. Do I treat it just like someone clicked the cancel button, or is there another way?

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  • Alternate three and three rows in a table with jQuery

    - by Frode Lillerud
    I want to set the alternate background color for rows in a table - but the twist is that I don't want every other row to be colored, I want to treat them in blocks of three rows. So for a table with eight rows I want the first three to be white, then the next three to have a background color, and the last two are back to white again. How can I do this using jQuery?

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  • Is passing NULL param exactly the same as passing no param

    - by park
    I'm working with a function whose signature looks like this afunc(string $p1, mixed $p2, array $p3 [, int $p4 = SOM_CONST [, string $p5 ]] ) In some cases I don't have data for the last parameter $p5 to pass, but for the sake of consistency I still want to pass something like NULL. So my question, does PHP treat passing a NULL exactly the same as not passing anything? somefunc($p1, $p2, $p3, $p4 = SOM_CONST); somefunc($p1, $p2, $p3, $p4 = SOM_CONST, NULL);

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  • How to read empty string in c

    - by russell
    I have a problem with reading empty string in c.I want to read string from the following - 1.ass 2.ball 3.(empty) 4.cat but when i use gets() it does not treat (empty) as string[3].it read 'cat' as string[3].So how can i solve this problem.Which thing should i use?? plz someone help.

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  • supress warning for generated c# code

    - by soren.enemaerke
    I have turned on "Treat warnings as errors" for my VS project which mean that I get errors for missing documentation (nice reminder for this particular project). However, part of the code is generated by a custom tool which does not insert xml documentation so I'm looking for away to ignore the missing xml documentation for the generated code only, not for the entire project. I have no influence on the actual file generated and cannot really insert anything in the file (as it is regenerated frequently by the tool) so I looking for something existing outside the generated file (the classes that are generated are partial, if that helps)

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  • Exporting classes containing std:: objects (vector, map, etc) from a dll

    - by RnR
    I'm trying to export classes from a DLL that contain objects such as std::vectors and std::stings - the whole class is declared as dll export through: class DLL_EXPORT FontManager { The problem is that for members of the complex types I get this warning: warning C4251: 'FontManager::m__fonts' : class 'std::map<_Kty,_Ty' needs to have dll-interface to be used by clients of class 'FontManager' with [ _Kty=std::string, _Ty=tFontInfoRef ] I'm able to remove some of the warnings by putting the following forward class declaration before them even though I'm not changing the type of the member variables themselves: template class DLL_EXPORT std::allocator<tCharGlyphProviderRef>; template class DLL_EXPORT std::vector<tCharGlyphProviderRef,std::allocator<tCharGlyphProviderRef> >; std::vector<tCharGlyphProviderRef> m_glyphProviders; Looks like the forward declaration "injects" the DLL_EXPORT for when the member is compiled but is it safe? Does it realy change anything when the client compiles this header and uses the std container on his side? Will it make all future uses of such a container DLL_EXPORT (and possibly not inline?)? And does it really solve the problem that the warning tries to warn about? Is this warning anything I should be worried about or would it be best to disable it in the scope of these constructs? The clients and the dll will always be built using the same set of libraries and compilers and those are header only classes... I'm using Visual Studio 2003 with the standard STD library. ---- Update ---- I'd like to target you more though as I see the answers are general and here we're talking about std containers and types (such as std::string) - maybe the question really is: Can we disable the warning for standard containers and types available to both the client and the dll through the same library headers and treat them just as we'd treat an int or any other built-in type? (It does seem to work correctly on my side.) If so would should be the conditions under which we can do this? Or should maybe using such containers be prohibited or at least ultra care taken to make sure no assignment operators, copy constructors etc will get inlined into the dll client? In general I'd like to know if you feel designing a dll interface having such objects (and for example using them to return stuff to the client as return value types) is a good idea or not and why - I'd like to have a "high level" interface to this functionality... maybe the best solution is what Neil Butterworth suggested - creating a static library?

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