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  • PHP code to convert a MySQL query to CSV

    - by Reilly
    What is the most efficient way to convert a MySQL query to CSV in PHP please? It would be best to avoid temp files as this reduces portability (dir paths and setting file-system permissions required). The CSV should also include one top line of field names. Cheers.

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  • Duplicating an array of strings.

    - by Jon
    arr = ["red","green","yellow"] arr2 = arr.clone arr2[0].replace("blue") puts arr.inspect puts arr2.inspect produces: ["blue", "green", "yellow"] ["blue", "green", "yellow"] Is there anyway to do a deep copy of an array of strings, other than using Marshal as i understand that is a hack. I could do: arr2 = [] arr.each do |e| arr2 << e.clone end but it doesn't seem very elegant, or efficient. Thanks

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  • Allow repeater to be arranged using drag-drop

    - by o-logn
    Hey all, I have a repeater that's bound to a SQL Data Source (using ASP.NET). Are there any JQuery plugins/efficient way of converting my repeater into something that can be sorted via drag and drop? i.e. users can rearrange the order of the data, which updates the database? Thanks

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  • How to iterate all query paths within an image header namespace in WIC?

    - by muruge
    Hello All, I am using Windows Imaging Component to read/write image metadata in my WPF application. I would like to know if there is an efficient way to know if any paths exist within a namespace. For instance I would like to know if any paths within IPTC namespace exist and if not I want to delete the namespace from the image header. Any pointers would be greatly appreciated. Thanks, Murugesh.

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  • MySQL: Which is faster — INSTR or LIKE?

    - by Grekker
    If your goal is to test if a string exists in a MySQL column (of type 'varchar', 'text', 'blob', etc) which of the following is faster / more efficient / better to use, and why? Or, is there some other method that tops either of these? INSTR( columnname, 'mystring' ) > 0 vs columnname LIKE '%mystring%'

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  • Rails - good tool to create a scheduled background process which will regularly retrieve messages fr

    - by adam
    Background Job gets mentioned a lot but all the tutorials I've seen seem to indicate that its for queuing jobs which are created by some external event such as a user clicking "Send mail". But what about when you have code that needs to scheduled to run every 30 seconds to listen for new messages from twitter? Normally rake is recommended for set in stone schedules but it inst so efficient for frequent jobs as it has to to load the entire rails app each time. Can anyone recommend anything for this situation?

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  • mySQL - One large query vs Ajax indivdual queries

    - by Mark
    Hi guys, I guess no one will have a definative answer to this but considered predictions would be appriciated. I am in the process of developing a mySQL database for a web application and my question is: Is it more efficient to make a single query that returns a single row using AJAX or To request 100 - 700 rows when the user will likely only ever use the results of two or three? Really I am asking what is heavier for the server 2-3 requests with one result or 1 request with 100 - 700 results? Thanks, Mark

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  • Best Method for "Back Button"

    - by CitadelCSCadet
    I'm working on a web application using JSP/Servlets, etc. And I have a lot of form progression. I am aware of some ways to use the "Back" functionality, but I am not sure if its efficient enough. What are the best ways to implement this? Does it Involve using the session object? or just the request? or neither?

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  • Control statements in Haskell?

    - by Nathan
    I am just beginning Haskell, but from all the online tutorials I've found I can't seem to find if there is one accepted way to do a conditional control statement. I have seen if-else, guards, and pattern matching, but they all seem to accomplish the same thing. Is there one generally accepted/faster/more efficient way than the rest?

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  • Substitute for Iterator that is Serialization

    - by Mahmoud
    I'm working on a GWT project, and I have a bunch of Java classes that use Java Object Iterators on the server side. As I was reading through the internet...Iterators seem to not be serializable preventing me from sending them over to the client side from the server side. My question is is there an efficient way to serialize the iterator or use a substitute that might be serializable ? Many thanks!

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  • cons operator (::) in F#

    - by Max
    The :: operator in F# always prepends elements to the list. Is there an operator that appends to the list? I'm guessing that using @ operator [1; 2; 3] @ [4] would be less efficient, than appending one element.

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  • What exactly is Arel in Rails 3.0?

    - by Will
    I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries. But... why is this better? will objects/queries be "easier" to create? will it lead to more efficient SQL queries? will it be compatible with all major DB's? - I assume it will. will it be easier/harder to use with stored procedures?

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  • PHP: Count-IF for Arrays

    - by st4ck0v3rfl0w
    Hi All, What would be the most efficient way of counting the number of times a value appears inside an array? Example Array ('apple','apple','banana','banana','kiwi') Ultimately I want a function to spit out the percentages for charting purposes (e.g. apple = 40%, banana = 40%, kiwi = 20%)

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  • Storing data in HTML, javascript book, articles recommendations.

    - by michael
    I'm looking for articles or books that discuss schemes and techniques adopted by pro javascript developers to store and organize data with html tags. In other words, how to emulate xml data storage with html as semantically as possible. Some various solutions that I've seen mentioned in passing are custom DTD, custom attributes with xhtml, early adoption of html5 and its data- attribute. Now, I'm looking for some tangible material that goes in depth with these concepts.

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  • POSIX: allocate 64KB on 64KB boundary.

    - by Eloff
    I would really like to actually only allocate 64KB of memory, not 128KB and then do the alignment manually - far too wasteful. VirtualAlloc on windows gives precisely this behavior. Supposedly there's code in SquirrelFish for doing this on just about every platform, but I haven't managed to locate it. Is there a space efficient way to allocate 64KB on a 64KB boundary in POSIX? Failing that, in Linux?

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