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  • Regex to get value of URL parameter?

    - by stef
    In a url like the one below, I'd like to get the value of ProdId. The URL format will always be consistent, as will the parameter name, but the length of the value may change. It will always be numeric. http://www.site.com/page.php?ProdId=2683322&xpage=2 Using PHP what's the fastest way to get it (I'll be processing 10,000's so speed is an issue) ?

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  • Mysql regexp performance question

    - by Tim
    Rumour has it that this; SELECT * FROM lineage_string where lineage like '%179%' and lineage regexp '(^|/)179(/|$)' Would be faster than this; SELECT * FROM lineage_string where lineage regexp '(^|/)179(/|$)' Can anyone confirm ? Or know a decent way to test the speed of such queries. Thanks

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  • Searching temporal data

    - by user321299
    I developing an application (in C#) where objects are active under a period of time, they have from and to properties of DateTime-type. Now I want to speed up my search routine for queries like: Are there other active objects in this timeperiod/at this time. Is there any existing temporal index I can use or can I use QuadTree/other tree-structures to search in an efficient way.

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  • Cache Web Application files locally (for responsiveness)

    - by jiewmeng
    is there a way i can cache all required application files on the local computer for speed without any disruption (at least those that can be run locally)? i want it to be able to start even without connection right from the start, isit possible? is Google Gears what i shld use? i heard theres a HTML5 feature/module for it?

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  • differences between "d.clear()" and "d={}"

    - by Tshepang
    On my machine, the execution speed between "d.clear()" and "d={}" is over 100ns so am curious why one would use one over the other. import timeit def timing(): d = dict() if __name__=='__main__': t = timeit.Timer('timing()', 'from __main__ import timing') print t.repeat()

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  • Good JavaScript engine for animating via Sprite Sheets (not in canvas)

    - by N. Taylor Mullen
    I've looked around a bit for a great JavaScript Sprite Sheet animator lib/engine but couldn't find any good ones so I thought I'd ask around =). What I'm looking for in the engine is: Animate an image in a non-canvas setting (ex: div via css or img tags) Control frame rate/animation speed Flags to loop or to animate once etc. Are there any engines like this out there? If not I can always make my own but then again, I don't want to re-invent the wheel =].

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  • innerHTML and event delegation

    - by Mark Gerrard
    Hello, I have a containing div that has multiple divs within which is updated every 25ms using innerHTML (for performance reasons). I have tried using event delegation to capture events but nothing I seem to do captures the click event. I think this may be due to the speed that the contents are getting updated. Any ideas would be very welcome. Thanks Mark

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  • What are good or interesting Assembler-like languages, but at a higher level?

    - by CodexArcanum
    I've been looking at L.in.oleum and am intrigued by it's mix of higher-level constructs (loops, dynamic variables) with low-level assembler power (registers). Are there other languages like Lino out there, which blend the speed of assembler with productivity enhancing features? EDIT: I realized this kind of sounds like an ad. I'm genuinely interested in other assembler-like languages, Lino is just the only one I happen to know of.

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  • Using Java Script to pass data

    - by Doodle
    How can I pass data from client to server? I have a very simple text editor created on a site and every few minutes or so I would like to send the information that has been typed in back to the server as a text file. I am trying to create an effect similar to the live type of googleWave. Speed and efficiency isn't all that important at the moment. A quick and dirty way would be suffice.

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  • xDebug : Output traces in php script?

    - by Industrial
    Hi! I have tried to use xDebug on my local Ubuntu environment to speed up development and it's a great asset. However, I would like to see the output of the Trace function directly in the browser, at the end of the script. How can this be done?

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  • How to set StartingSlide without using pager cycle plugin

    - by Geetha
    Hi All, I want to set the starting slide manually for the cycle plugin without using pager. It is not working for me. Code: $('#divTrac').cycle({ fx: 'scrollHorz', speed: 1500, next: '#leftt', prev: '#rightt', startingSlide: 2, timeout: 0, continuous: false, pause: 1, sync: 1, nowrap: 1, slideExpr: '#myTrack' });

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  • Matrix multiplication in java

    - by Chapax
    Hi, I wanted to do matrix multiplication in Java, and the speed needs to be very good. I was thinking of calling R through java to achieve this. I had a couple of Qs though: Is calling R using Java a good idea? If yes, are there any code samples that can be shared? What are the other ways that can be considered to do matrix multiplication in Java? Many thanks. --Chapax

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  • MySQL: selecting all but one field?

    - by gsquare567
    instead of SELECT * FROM mytable, i would like to select all fields EXCEPT one (namely, the 'serialized' field, which stores a serialized object). this is because i think that losing that field will speed up my query by a lot. however, i have so many fields and am quite the lazy guy. is there a way to say... `SELECT ALL_ROWS_EXCEPT(serialized) FROM mytable` ? thanks!

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  • Linq to SQL: how get row security between write access??

    - by Francisco
    I would like to allow two threads to write in a table at the same time (I know the problem of updating the same row, but this would be a story apart). I need that in behalf of speed up the operations in my aplication (one thread could write in row X while another could do the same in row X+n instead of waiting the first to finalize). So, can I block rows instead of tables with Linq to SQL? Thanks.

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  • UIPickerView didSelectRow delay

    - by Rob Bonner
    Hello all, I have a UIPickerView implemented in one of my pages that depends on the didSelectRow delegate method. An odd behavior I have noticed is when the user moves a wheel and leaves it between selections, then the wheel will move very slowly to the closest selection. The didSelectRow event will not fire until this is complete, sometimes 3 seconds later. Is there a way to speed this up, or detect when the wheel is being moved, so I can freeze my interface during this time?

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  • Java: Calculate distance between a large number of locations and performance

    - by Ally
    I'm creating an application that will tell a user how far away a large number of points are from their current position. Each point has a longitude and latitude. I've read over this article http://www.movable-type.co.uk/scripts/latlong.html and seen this post http://stackoverflow.com/questions/837872/calculate-distance-in-meters-when-you-know-longitude-and-latitude-in-java There are a number of calculations (50-200) that need carried about. If speed is more important than the accuracy of these calculations, which one is best?

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  • C vs. C++ for performance in memory allocation

    - by Andrei
    Hi, I am planning to participate in development of a code written in C language for Monte Carlo analysis of complex problems. This codes allocates huge data arrays in memory to speed up its performance, therefore the author of the code has chosen C instead of C++ claiming that one can make faster and more reliable (concerning memory leaks) code with C. Do you agree with that? What would be your choice, if you need to store 4-16 Gb of data arrays in memory during calculation?

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