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  • 3d symmetry search algorithm

    - by aaa
    this may be more appropriate for math overflow, but nevertheless: Given 3d structure (for example molecule), what is a good approach/algorithm to find symmetry (rotational/reflection/inversion/etc.)? I came up with brute force naive algorithm, but it seems there should be better approach. I am not so much interested in genetic algorithms as I would like best symmetry rather then almost the best symmetry link to website/paper would be great. thanks

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  • Commenting C code, header and source files

    - by pygabriel
    I'm looking for a "best practice" to document my C code. Like in any project I have some header files ".h" and the respective source file ".c" In the header file what kind of comment you put in? And in source files? The question arise up because since I commented well my header files, the c files looks like a mess. What's your best practices in keeping the code well commented?

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  • How do I convert tuple of tuples to list in one line (pythonic)?

    - by ThinkCode
    query = 'select mydata from mytable' cursor.execute(query) myoutput = cursor.fetchall() print myoutput (('aa',), ('bb',), ('cc',)) Why is it (cursor.fetchall) returning a tuple of tuples instead of a tuple since my query is asking for only one column of data? What is the best way of converting it to ['aa', 'bb', 'cc'] ? I can do something like this : mylist = [] myoutput = list(myoutput) for each in myoutput: mylist.append(each[0]) I am sure this isn't the best way of doing it. Please enlighten me!

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  • authentication on gui application written on perl

    - by oren
    Its not specific perl question I am building a perl gui/wxperl application that connect to DB . I want my application to be a password protected i.e first the user should enter the user and password and then use the appication . what is the best secure method to store the password could someone provide an idea what is the best method to how should i store the user and the password and how should i retrieve them for authentication ? if possible could someone provide some perl code how to do this ?

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  • iPhone SDK: How to generate a random time of day

    - by bigdave
    Hello all, I am having some problems trying to figure out the best way of generating a random time of day. For instance, if I want to choose a random time between the hours of 9am and 5pm, what would be the best way with the least amount of overhead on the device? I guess I need someone to point me in the right direction. Thanks!

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  • struts 2 - where should I set global application variables?

    - by Nicola Montecchio
    Hi I'm using struts 2 and I'd like to read some custom-defined parameters (global variables), preferably from web.xml or some custom ".properties" file (i.e. not hardcoded in the Java sources). This problem has been driving me mad for the past half hour as I can't google any reasonable solution. What is the best way to do this? I find it strange that it is so difficult ... all the best Nicola Montecchio

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  • Beginner to PHP web services

    - by Manjula
    What is the best way to implement web services in PHP? I have heard about libraries like NuSOAP and WSO2 web service platform, But don't know what is the best ( or a good and easy to learn) for using web service in PHP?

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  • What's a good library to do computational geometry (like CGAL) in a garbage-collected language?

    - by Squash Monster
    I need a library to handle computational geometry in a project, especially boolean operations, but just about every feature is useful. The best library I can find for this is CGAL, but this is the sort of project I would hesitate to make without garbage collection. What language/library pairs can you recommend? So far my best bet is importing CGAL into D. There is also a project for making Python bindings for CGAL, but it's very incomplete.

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  • How to store (and use) the current mouse position?

    - by Ben Packard
    What is the best way to store the current mouse position (system-wide) and then (later) put the mouse at that stored point? [NSEvent mouseLocation] gets me the position, and I can move the mouse with a CGEventMouseMoved, but they each use a different co-ordinates system (I believe y=0 is the top for NSEvent and the bottom for a CGEvent). I'm worried about the robustness of capturing the screen height and using it to convert between the two - or is this the best approach?

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  • Loading Hybrid Dimension Table with SCD1 and SCD2 attributes + SSIS

    - by Nev_Rahd
    Hello I am just in a process of starting a new task, wherein in i need to load Hybrid Dimension Table with SCD1 and SCD2. This need to be achieved as a SSIS Package. Can someone guide what would be the best way dealing this in SSIS, should i used SCD component or there is other way? What are the best practices for this. For SCD2 type, am using Merge statement. Thanks

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  • How to validate a xml schema

    - by Alexander Kjäll
    I'm writing a xml schema (a xsd) to describe the format our partners should send us data in. And I'm havening a hard time find a tool that can validate the xsd file that i have written. The best way I have found so far is to write an example input xml file and try to validate that with the xsd. But that doesn't feel like a best practice maneuver. How should I validate a xml schema?

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  • Where to store a DataSource resource in a Java web app?

    - by Slavko
    This is a rookie question. What's the best place to put @Resource private DataSource ds; in a web application? Do I put it in a servlet, context listener or maybe there's a better place for it? Also, do I create a new Connection object in my doGet()/doPost() or should I do it somewhere else? What's the best practice for stuff like this? Thank you!

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  • Efficiency of purely functional programming

    - by Sid
    Does anyone know what is the worst possible asymptotic slowdown that can happen when programming purely functionally as opposed to imperatively (i.e. allowing side-effects)? Clarification from comment by itowlson: is there any problem for which the best known non-destructive algorithm is asymptotically worse than the best known destructive algorithm, and if so by how much?

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  • Updating protected using update_all

    - by Jack
    Since you cannot use the normal 'update' and 'update_attribute' methods from ActiveRecord to update a protected attribute, is the following the best way to update an attribute for a single user? User.update_all("admin = true","id = 1") I'm guessing this doesn't lie in the 'best practice' category, so I'm just curious if there is a more appropriate way.

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  • What kind of intern experience should I get?

    - by Narcolapser
    So right now I have a good job as a software development intern for a company called Country Maid. I know that having 4 years of experience when I graduate from college (I'm currently a freshman) will look good on a resume. But I started to wonder, would 4 with one company be best, or 4 years split up between multiple companies be best? So my question is, when hiring a software developer straight out of college, what kind and how much experience to companies look for? ~N

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  • Assigning a vector of one type to a vector of another type

    - by deworde
    Hi, I have an "Event" class. Due to the way dates are handled, we need to wrap this class in a "UIEvent" class, which holds the Event, and the date of the Event in another format. What is the best way of allowing conversion from Event to UIEvent and back? I thought overloading the assignment or copy constructor of UIEvent to accept Events (and vice versa)might be best.

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  • How to convert a string into a Point in C#

    - by NateD
    I have a list of strings of the format "x,y". I would like to make them all into Points. The best Point constructor I can find takes two ints. What is the best way in C# to turn "14,42" into new Point(14,42);? I know the Regex for doing that is /(\d+),(\d+)/, but I'm having a hard time turning those two match groups into ints in C#. any help you could offer would be appreciated.

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  • Sources for news about network security

    - by chris.nullptr
    I am a software developer that wants to stay up-to-date on network security news. What are some of the best sources online for not only keeping tabs on newly discovered security vulnerabilities that may affect projects I'm working on, but also best-practices when developing network software. Please keep in mind that I am looking for sources that cater to the software developer not IT administration.

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  • where should damage logic go Game Engine or Character Class

    - by numerical25
    I am making a game and I am trying to decide what is the best practice for exchanging damage between two objects on the screen. Should the damage be passed directly between the two objects or should it be pass through a central game engine that decides the damage and different criteria's such as hit or miss or amount dealt. So overall what is the best practice.

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