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  • Finding users near other user

    - by Bunny Rabbit
    what algorithms should I explore to implement a feature which lets a user find other user located near him , the latitude and the longitudes of all the user are known in advance and are fixed [not dynamic]. Also i believe that there should be a better way to store such data then simply storing the lat , long of the user against his user id in a database.What are the efficient ways to handle this ?

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  • Does this e-mail-regex exclude valid addresses?

    - by neo
    I tried to create a regular expression which catches all RFC-valid addresses but it's ok if some false-positives come through (though hopefully not so many). This is waht I came up so far: /^\b\S+@\S+\.[^\s@]{2,}\b$/ Is there any RFC-valid address which doesn't match against this expression or do you have any suggestions to improve it? I don't mind the false positives but I would be glad if you show me a few, too.

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  • Is there an API available to retrieve raw Wiktionary Data?

    - by Armentage
    I want to build a simple application that looks up words against Wiktionary to see if they exist. Is there a standard API supported by the Wiktionary software that would let me do this? Alternatively, is there any way I can pull down the dictionary data that backs a Wiktionary? There are many international variants who's data I would love to put a different front-end around.

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  • How can I measure the speed of code written in Java? (AI algorithms)

    - by Registered User
    Hi All, How can I measure the speed of code written in Java? I planning to develop software which will solve Sudoku using all presently available AI and ML algorithms and compare time against simple brute-force method. I need to measure time of each algorithm, I would like to ask for suggestions on what is the best way of doing that? Very important, program must be useful on any machine regardless to CPU power/memory. Thank you.

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  • Stored Procedure in postgresql, multiple queries w/ agreggates.

    - by fenix
    I'm trying to write a store procedure that can take some input parameters (obviously), run multiple queries against those, taking the output from those and doing calculations, and from those calculations and the original queries, outputting a formatted text string like: Number of Rows for max(Z) matching condition x and y of total rows matching x (x&y/x*100). To explain the max(Z) bit, this will be the username field, it won't matter which actual entry is picked, because the where clause will filter the results by user id, is there a saner way to do this?

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  • Contact page MVC workflow

    - by alex
    All my previous projects have had this workflow on Contact pages User submits form Controller gets $_POST details Controller validates details (and sets error messages if necessary) Controller sends email Controller redirects to thanks page Is this the standard workflow? I used to validate everything in controllers, and then did some more reading and they recommended against it. Therefore, should I send the $_POST details to a helper type object and let it do all the work (validation/sending)?

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  • How can I acquire an aggregated list of known proxy IP addresses?

    - by Howard3
    I'd like to use this to help maintain a good defence against people trying to skirt the rules of my system. I've found TOR endpoints, nothing that's readily available to be shot into a script (needs to be parsed) but they work. However I need a list which goes beyond TOR yet I cannot find anything conclusive just yet. Any suggestions would be greatly appreciated.

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  • diffstrings.py : how do you specify path arguments?

    - by rudifa
    I am trying to use diffstrings.py from Three20 on my iPhone project, and I can't find the proper format for the path arguments (as in "Usage: diffstrings.py [options] path1 path2 ..."). For example, when I run the script in my Xcode project directory like this ~/py/diffstrings.py -b it analyzes just the main.m and finds 0 strings to localize, then it diffs against existing fr.lproj and others, and finds that thes contain "obsolete strings". Can anyone post examples of successful comand line invocations of diffstrings.py, for options -b, -d and -m?

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  • Parsing complicated query parameters

    - by Will
    My Python server receives jobs that contain a list of the items to act against, rather like a search query term; an example input: (Customer:24 OR Customer:24 OR (Group:NW NOT Customer:26)) To complicate matters, customers can join and leave groups at any time, and the job should be updated live when this happens. How is best to parse, apply and store (in my RDBMS) this kind of list of constraints?

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  • If you use XML Serialization how do you validate data?

    - by chobo2
    Hi I am planning to try to use XML Serialization in C# but I am wondering if I get a .xml file how do I check if the xml file confirms to the right type? Like usually you would make a schema that you can validate against to make sure if it confirms to the right format. Can you hook a schema up to to XML Serialization or does it do this checking automatically? Thanks

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  • I want to create an expression for querystrings, this stuff is hard!

    - by jkirkerx
    I want to extract some keywords out of a query string for a search application in asp.net. I decoded the url string first, so it's plain text I have this to start with, but I want to add a keyword group I'd like to trim off the stuff for pure words, but not sure if that's possible I also have a long list of possible query string value fields that I want to check against ?q= @q= ?qs= &qs=

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  • regex. How can I match the value between '+' and ':' ?

    - by martin
    I have this string: sometext +[value]:- I would like to match the value(1-3 numerical characters) (with regex, javascript) sometext may contain a +sign if i'm unlucky so I don't wanna end up with matching some +text +value:- I sat up last night banging my head against this, so I would be really glad if someone could help me.

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  • Can you define values in a SQL statement that you can join/union, but are not stored in a table outs

    - by Mervyn
    I'm trying to create a query and need to join against something that I can define values in without creating a table. I'll attempt to describe what I'm trying to do: table1 is joined on field a with table2 (titles for FK in table 1) - Table1 has values outside of what exists in table2 - I want to add an additional 'table' to be unioned with table2 and then joined with table 1 Thanks

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  • What's the consequence when Core Data detects an optimistic locking failure when trying to save?

    - by dontWatchMyProfile
    I get it: When a managed object context saves, the snapshots of all edited objects are compared against the values in the persistent store to see if the PS has changed since the snapshot was made. If it did change, then there's a conflict and optimistic locking failed, according to Apple. But now, what's the consequence of this? What happens next? What are my options in this case?

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  • Optimizing grep (or using AWK) in a shell script

    - by Ode
    Hi - In my shell script, I am trying to search using terms found in a $sourcefile against the same $targetfile over and over. My $sourcefile is formatted as such: pattern1 pattern2 etc... The inefficient loop I have to search with is: for line in $(< $sourcefile);do fgrep $line $targetfile | fgrep "RID" >> $outputfile done I understand it would be possible to improve this by either loading the whole $targetfile into memory, or perhaps by using AWK? Thanks

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  • LINQ display row numbers

    - by timvaines
    I simply want to include a row number against the returned results of my query. I found the following post that describes what I am trying to achieve but gives me an exception http://vaultofthoughts.net/LINQRowNumberColumn.aspx "An expression tree may not contain an assignment operator" In MS SQL I would just use the ROWNUMBER() function, I'm simply looking for the equivalent in LINQ.

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  • Given a Date "03/13/2010", using that in a MYSQL Where Clause?

    - by nobosh
    I would like to pass a MYSQL query via Coldfusion the following date: 03/13/2010 So the query filters against it like so: SELECT * FROM myTable WHERE dateAdded before or on 03/13/2010 I'd also like to be able to take 2 dates as ranges, from: 01/11/2000, to: 03/13/2010 SELECT * FROMT myTable WHERE dateAdded is ON or Between 01/11/2000 through 03/13/2010 thanks

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