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Search found 21 results on 1 pages for 'pierreten'.

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  • Interpolation of time series data in R

    - by Pierreten
    I'm not sure what i'm missing here, but i'm basically trying to compute interpolated values for a time series; when I directly plot the series, constraining the interpolation points with "interpolation.date.vector", the plot is correct: plot(date.vector,fact.vector,ylab='Quantity') lines(spline(date.vector,fact.vector,xout=interpolation.date.vector)) When I compute the interpolation, store it in an intermediate variable, and then plot the results; I get a radically incorrect result: intepolated.values <- spline(date.vector,fact.vector,xout=interpolation.date.vector) plot(intepolated.values$x,intepolated.values$y) lines(testinterp$x,testinterp$y) Doesn't the lines() function have to execute the spline() function to retrieve the interpolated points in the same way i'm doing it?

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  • TDD and management

    - by Pierreten
    My manager is starting to get pretty pissed off that I'm devoting time to designing tests (he sees testing as something you do after the software is written.). His do I convince him otherwise?

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  • How do Relational Databases Work Under the Hood?

    - by Pierreten
    I've always been interested in how you can throw some SQL at at database, and it nearly instantaneously returns your results in an orderly manner without thinking about it as anything other than a black box. What is really going on? I'm pretty sure it has something to do with how values are laid out regularly in memory, similar to an array; but aside from that, I don't know much else. How is SQL parsed in a manner to facilitate all of this?

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  • Multiuser XML document "database" for asp.net app

    - by Pierreten
    I was thinking about a way to allow multiple users to get CRUD access to an XML document in an asp.net app. The operations would obviously have to be made under the assumption of a multithreaded environment. For perf reasons, would it make sense to cache the document, and use a mutex on that cached version? When would changes be flushed to the physical XML document? Any and all recommendations are appreciated (also "use a database" isn't an option at this point unfortunately)

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  • What are the benefits of prototypal inheritance over classical?

    - by Pierreten
    So I finally stopped dragging my feet all these years and decided to learn JavaScript "properly". One of the most head-scratching elements of the languages design is it's implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the life of me can't figure out what benefits are to be had from object instances using other instances for inheritance.

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  • Corporate developers: Do you feel your code is adding value to the company?

    - by Pierreten
    I'm going through a phase where I'm not being productive at all. I find it hard to justify to myself getting paid six figures to sit in front of my computer and act busy. Management is completely disengaged, and the users as well. What do you do in this type of situation? I've taken to learning some deeper aspects of .Net and software construction in general, but don't like the feeling that I'm stiffing my employer.

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  • ASP.net canvas server control

    - by Pierreten
    I was wondering if anyone has come up with an ASP.net server tag for the HTML5 canvas? I was thinking of something where I could declaritively define paths, curves; etc in the aspx markup, and the control would deliver the js to do this (perhaps with support for browser detection, and delivery of an emulation script for IE browsers.) Maybe a good idea for a Codeplex project for me to start up?

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  • how to deal with political differences that lead to dysfunctional development environment

    - by Pierreten
    We have a few liberal programmers on our team who don't use source control, don't manage time effectively and always want to use our budget on useless tools/components that are expensive and things we can build ourselves. They are also loud and disrespectful. Our group of conservatives always have to clean up after them and show them the correct way of doing things. How do we address this discrepancy? Please advise.

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  • Why Do Programmers Get So Invested in their Favorite Technologies?

    - by Pierreten
    I've noticed this culture surrounding Ruby where developers truly believe that they are somehow more gifted than developers of other languages, regardless of experience and talent (even when that isn't the case, I've met some extremely junior Ruby developers come up with some pretty basic constructs, and pass them off as some sort of revolutionary idea). The derision of strongly typed languages seems to be a common theme as well; regardless of its merits. Is there something particular to the Ruby syntax in general that is to account for this? Is there a sociological component to it?

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  • Doubleton Pattern Implementation

    - by Pierreten
    I'm leveraging the Doubleton Pattern from this link http://www.codeproject.com/KB/architecture/designpattern_doubleton.aspx in my own code. I think it makes things a lot easier since the Singleton only provides one instance, but I get two with this pattern. I was wondering if it would make sense to have it implement an interface so I can inject it into my domain layer.

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  • Why Are Ruby Programmers So Full of Themselves? [closed]

    - by Pierreten
    I've noticed this culture surrounding Ruby where developers truly believe that they are somehow more gifted than developers of other languages, regardless of experience and talent (even when that isn't the case, I've met some extremely junior Ruby developers come up with some pretty basic constructs, and pass them off as some sort of revolutionary idea). The derision of strongly typed languages seems to be a common theme as well; regardless of its merits. Is there something particular to the Ruby syntax in general that is to account for this? Is there a socialogical component to it?

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  • C# Dictionary<> and mutable keys

    - by Pierreten
    I was told that one of the many reasons strings were made immutable in the C# spec was to avoid the issue of HashTables having keys changed when references to the string keys altered their content. The Dictionary< type allows reference types to be used as a key. How does the dictionary avoid the issue of altered keys that lead to "misplaced" values? Is there a memberwise clone made of an object when used as a key?

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  • Will "Programming in the Cloud" Ever Take off?

    - by Pierreten
    Just got a chance to try out a cloud programming environment that let's you develop .net apps within the browser (http://coderun.com/ide/) I found it pretty interesting, since I was able to develop a mockup ASP.net site on an IPad. With javascript engines in browsers becoming faster and faster, cheap server infrastructure to compile on; will the cloud become the IDE platform of the future?

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  • Javascript Function Definitions

    - by Pierreten
    I was wondering why the Vector variable defined within this self executing javascript function doesn't require a var before it? Is this just some other type of syntax for creating a named function? Does this make it so we can't pass Vector as an argument to other functions? (function() { Vector = function(x, y) { this.x = x; this.y = y; return this; }; //...snip })()

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