Search Results

Search found 2782 results on 112 pages for 'purely functional'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 13/112 | < Previous Page | 9 10 11 12 13 14 15 16 17 18 19 20  | Next Page >

  • Server 2003 Functional Domain DFS Replication Problem (Files being moved to conflicted folder for no reason)

    - by Az
    We have 2 Windows 2003 servers configured with a DFS namespace and we are running into problems with the redirected profiles we have setup. Basically, one server is the FSMO master for all roles, and we have another DC that is the DFS namespace primary server. We have profile redirection setup using the \dfsnamespace\userprofile formula. The FSMO master DC locks up occasionally (don't ask :), and when it does, and we bring it back up... All of the user profiles hosted on the DFS namespace get overwritten when a user logs in. The current profile gets moved to the conflicting and deleted items folder. This strikes me as really odd considering the whole point of using DFS was to provide some redundancy in case one server went down. Can anyone help? Thanks in advance! -Nate

    Read the article

  • Issues Deploying Functional WAR to Elastic Beanstalk with Tomcat7

    - by BFar
    I am currently deploying OpenTripPlanner (http://github.com/OpenPlans/OpenTripPlanner.git) to Elastic Beanstalk. I'm able to successfully build and deploy opentripplanner with my own customized settings on an ec2. I have set it up so that the appropriate WAR file can be placed in the Tomcat/Webapps folder, and when Tomcat is started up, it will auto-deploy, and even download open trip planner's graph.obj from an S3. All of that works just fine, except when I try to deploy to Elastic Beanstalk. When I upload to Elastic Beanstalk, the log shows that my WAR file is successfully unpacked & successfully downloads the graph.obj from my S3. The only difference is that then nothing happens and I can't load the site in my browser. The health is RED, and I can't figure out what is going on. I've tried looking into ports and dns issues, but I can't determine what's wrong. Anyone have any ideas? Why would a WAR that works on tomcat7 outside of Beanstalk fail to be accessible?

    Read the article

  • Laptop Synaptics Touchpad No Longer Functional After Windows 7 Upgrade

    - by Chance
    I have a Toshiba laptop, with an integral Synaptics (PS/2 port) touch pad, that I bought pre-installed with 32-bit Windows Vista. After doing a clean install of 32-bit Windows 7, I can no longer get the touch pad to respond. The function (FN) keys on the laptop still operate correctly, but they no longer display on screen when used. I have no way of knowing if the function key to enable / disable the touch pad is working correctly, although the function keys for dim / brighten display, as well as others, work fine. I have removed the device from the device manager and allowed it to reinstall with no success. I have removed the previous drivers and updated them with the current 32-bit Win7 compatible versions from Synaptics website, with no success. The Synaptics icon displays in the taskbar, and the touch pad is available in the Device Manager, both of which say the device is installed and working correctly. I have checked to make sure that the touch pad is enabled in the Synaptics menu, and have tried toggling enabled / disabled with no success. If anyone has any suggestions, or knows where I can find a solution, I would be very appreciative.

    Read the article

  • Where to put git "remote" repo on purely local git setup?

    - by Mittenchops
    I overwrote and lost some important scripts and would like to setup version control to protect my stuff. I've used git before, and am familiar with commands, but don't understand where I would put my "remote" repository on an install set up on my own machine---the place I push/pull to. I don't intend to share or access remotely, I just want a little source control for my files. I followed the instructions here for setting up my staging area: http://stackoverflow.com/questions/4249974/personal-git-repository But where do I put git "remote" repo on purely local git setup? How does the workflow work then? On the command in the above: git remote add origin ssh://myserver.com:/var/repos/my_repo.git Where should I put/name something like this? If I have multiple different projects, would they go in different places? I'm running 11.10.

    Read the article

  • Are super methods in JavaScript limited to functional inheritance, as per Crockford's book?

    - by kindohm
    In Douglas Crockford's "JavaScript: The Good Parts", he walks through three types of inheritance: classical, prototypal, and functional. In the part on functional inheritance he writes: "The functional pattern also gives us a way to deal with super methods." He then goes on to implement a method named "superior" on all Objects. However, in the way he uses the superior method, it just looks like he is copying the method on the super object for later use: // crockford's code: var coolcat = function(spec) { var that = cat(spec), super_get_name = that.superior('get_name'); that.get_name = function (n) { return 'like ' + super_get_name() + ' baby'; }; return that; }; The original get_name method is copied to super_get_name. I don't get what's so special about functional inheritance that makes this possible. Can't you do this with classical or prototypal inheritance? What's the difference between the code above and the code below: var CoolCat = function(name) { this.name = name; } CoolCat.prototype = new Cat(); CoolCat.prototype.super_get_name = CoolCat.prototype.get_name; CoolCat.prototype.get_name = function (n) { return 'like ' + this.super_get_name() + ' baby'; }; Doesn't this second example provide access to "super methods" too?

    Read the article

  • How to implement a list fold in Java

    - by Peter Kofler
    I have a List and want to reduce it to a single value (functional programing term "fold", Ruby term "inject"), like Arrays.asList("a", "b", "c") ... fold ... "a,b,c" As I am infected with functional programing ideas (Scala), I am looking for an easier/shorter way to code it than sb = new StringBuilder for ... { append ... } sb.toString

    Read the article

  • Purely technical reasons for PHP as a first choice?

    - by JoelFan
    I know this may come off as a flame-y / troll-y, but I hope you will take my word for it that it's not my intention. I am just trying to understand the PHP phenomenon. After looking at the many technical issues with the language design of PHP, I am hard pressed to find any redeeming technical advantages where PHP surpasses all other languages. Before coming to the conclusion that there would simply be no reason to choose PHP as a development language on purely technical grounds, I would like to ask, if all non-technical factors were equal (such as what language the developers already know, what languages the hosting provider offers, language of existing code, cost, license, corporate fiat, etc.), would there be any type of new software system that would indicate making PHP a first choice for development? If so, what technical advantage does PHP have over all other languages that would cause you to choose it? EDIT: I am not interested in comparing PHP "out of the box" with other languages "out of the box". If PHP has a certain feature "out of the box" that another language has only after installing some readily available add-on, that is not considered an advantage for PHP for the purposes of this question.

    Read the article

  • How to refactor an OO program into a functional one?

    - by Asik
    I'm having difficulty finding resources on how to write programs in a functional style. The most advanced topic I could find discussed online was using structural typing to cut down on class hierarchies; most just deal with how to use map/fold/reduce/etc to replace imperative loops. What I would really like to find is an in-depth discussion of an OOP implementation of a non-trivial program, its limitations, and how to refactor it in a functional style. Not just an algorithm or a data structure, but something with several different roles and aspects - a video game perhaps. By the way I did read Real-World Functional Programming by Tomas Petricek, but I'm left wanting more.

    Read the article

  • Languages with a clear distinction between subroutines that are purely functional, mutating, state-changing, etc?

    - by CPX
    Lately I've become more and more frustrated that in most modern programming languages I've worked with (C/C++, C#, F#, Ruby, Python, JS and more) there is very little, if any, language support for determining what a subroutine will actually do. Consider the following simple pseudo-code: var x = DoSomethingWith(y); How do I determine what the call to DoSomethingWith(y) will actually do? Will it mutate y, or will it return a copy of y? Does it depend on global or local state, or is it only dependent on y? Will it change the global or local state? How does closure affect the outcome of the call? In all languages I've encountered, almost none of these questions can be answered by merely looking at the signature of the subroutine, and there is almost never any compile-time or run-time support either. Usually, the only way is to put your trust in the author of the API, and hope that the documentation and/or naming conventions reveal what the subroutine will actually do. My question is this: Does there exist any languages today that make symbolic distinctions between these types of scenarios, and places compile-time constraints on what code you can actually write? (There is of course some support for this in most modern languages, such as different levels of scope and closure, the separation between static and instance code, lambda functions, et cetera. But too often these seem to come into conflict with each other. For instance, a lambda function will usually either be purely functional, and simply return a value based on input parameters, or mutate the input parameters in some way. But it is usually possible to access static variables from a lambda function, which in turn can give you access to instance variables, and then it all breaks apart.)

    Read the article

  • Haskell Cons Operator (:)

    - by Carson Myers
    I am really new to Haskell (Actually I saw "Real World Haskell" from O'Reilly and thought "hmm, I think I'll learn functional programming" yesterday) and I am wondering: I can use the construct operator to add an item to the beginning of a list: 1 : [2,3] [1,2,3] I tried making an example data type I found in the book and then playing with it: --in a file data BillingInfo = CreditCard Int String String | CashOnDelivery | Invoice Int deriving (Show) --in ghci $ let order_list = [Invoice 2345] $ order_list [Invoice 2345] $ let order_list = CashOnDelivery : order_list $ order_list [CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, CashOnDelivery, ...- etc... it just repeats forever, is this because it uses lazy evaluation? -- EDIT -- okay, so it is being pounded into my head that let order_list = CashOnDelivery:order_list doesn't add CashOnDelivery to the original order_list and then set the result to order_list, but instead is recursive and creates an infinite list, forever adding CashOnDelivery to the beginning of itself. Of course now I remember that Haskell is a functional language and I can't change the value of the original order_list, so what should I do for a simple "tack this on to the end (or beginning, whatever) of this list?" Make a function which takes a list and BillingInfo as arguments, and then return a list? -- EDIT 2 -- well, based on all the answers I'm getting and the lack of being able to pass an object by reference and mutate variables (such as I'm used to)... I think that I have just asked this question prematurely and that I really need to delve further into the functional paradigm before I can expect to really understand the answers to my questions... I guess what i was looking for was how to write a function or something, taking a list and an item, and returning a list under the same name so the function could be called more than once, without changing the name every time (as if it was actually a program which would add actual orders to an order list, and the user wouldn't have to think of a new name for the list each time, but rather append an item to the same list).

    Read the article

  • Program to find canonical cover or minimum number of functional dependencies

    - by Sev
    I would like to know if there is a program or algorithm to find canonical cover or minimum number of functional dependencies? For example: If you have: R = (A,B,C) <-- these are tables: A,B,C And dependencies: A ? BC B ? C A ? B AB ? C The canonical cover (or minimum number of dependencies) is: A ? B B ? C Is there a program that can accomplish this? If not, any code/pseudocode to help me write one would be appreciated. Prefer in Python or Java.

    Read the article

  • Functional Specifications vs. Requirements Document

    - by KP
    Guys, Currently in my comp., there are some changes going on regarding project documentation. There is a LOT of time and effort spent on discussing functional specs vs. requirements doc. However, I don't think anyone here understands the reason why you would use one over the other. Therefore, I don't understand the difference myself. Can someone shed some light on this matter plz? If you have links to articles, blog posts, etc. that would be helpful too. Thanks

    Read the article

  • Using FlexMock in a rails functional test.

    - by dagda1
    Hi, I have the following index action: class ExpensesController < ApplicationController def index() @expenses = Expense.all end end I want to mock the call to all in a functional test. I am using flexmock and have written the following test: require 'test_helper' require 'flexmock' require 'flexmock/test_unit' class ExpensesControllerTest < ActionController::TestCase test "should render index" do flexmock(Expense).should_receive(:all).and_return([]) get :index assert_response :success assert_template :index assert_equal [], assigns(:presentations) end end The problem is the the last assertion fais with the following error message: <[] expected but was nil I am confused what I am doing wrong. Should this not work? Cheers Paul

    Read the article

  • Need a push in the right direction, to write my first functional test in Rails

    - by Jason
    I've read quiet a bit of documentation over the last few days about testing in Rails, I'm sitting down to write my first real test and not 100% sure how to tie what I have learned together to achieve the following functional test (testing a controller) I need to send a GET request to a URL and pass 3 parameters (simple web-service), if the functionality works the keyword true is simply returned, otherwise the keyword false is returned - its in only value returned & not contained in any <div>, <span> or other tags. The test should assert that if "true" is returned the test is successful. This is probably very simple so apologies for such a non-challenging question. If anyone could point me in the write direction on how I can get started, particularly how I can test the response, I'd be very grateful!

    Read the article

  • Minimal files to run a fully-functional PostgreSQL in Windows

    - by fxam
    I would like to bundle PostgreSQL into my application. I downloaded the PostgreSQL 9 beta zip without the installer. After extraction, there are 8 directories. I found out that at least the following directories are required to run PostgreSQL properly, at least under my experiments. bin lib share The question is, are the above three directories really sufficient to run a fullly functional PostgreSQL? Do I need the 'include' and 'symbols' directories? Also, can I remove 'share\locale' if I don't use these locales?

    Read the article

  • Why are my functional tests failing?

    - by Mongus Pong
    I have generated some scaffolding for my rails app. I am running the generated tests and they are failing. for example test "should create area" do assert_difference('Area.count') do post :create, :area => { :name => 'area1' } end assert_redirected_to area_path(assigns(:area)) end This test is failing saying that : 1) Failure: test_should_create_area(AreasControllerTest) [/test/functional/areas_controller_test.rb:16]: "Area.count" didn't change by 1. <3 expected but was <2. There is only one field in the model : name. I am populating this so it cant be because I am failing to populate the only field. I can run the site and create an area with the name 'area1'. So reality is succeeding, but the test is failing. I cant ask why its failing, because Im sure theres not enough information here for anyone here to know why. Im just stuck at knowing what avenues to go down to work out why the test is failing. Even putting puts into the code dont print out... What steps can I take to track this down?

    Read the article

  • Javascript functional inheritance with prototypes

    - by cdmckay
    In Douglas Crockford's JavaScript: The Good Parts he recommends that we use functional inheritance. Here's an example: var mammal = function(spec, my) { var that = {}; my = my || {}; // Protected my.clearThroat = function() { return "Ahem"; }; that.getName = function() { return spec.name; }; that.says = function() { return my.clearThroat() + ' ' + spec.saying || ''; }; return that; } var cat = function(spec, my) { var that = {}; my = my || {}; spec.saying = spec.saying || 'meow'; that = mammal(spec, my); that.purr = function() { return my.clearThroat() + " purr"; }; that.getName = function() { return that.says() + ' ' + spec.name + ' ' + that.says(); }; return that; }; var kitty = cat({name: "Fluffy"}); The main issue I have with this is that every time I make a mammal or cat the JavaScript interpreter has to re-compile all the functions in it. That is, you don't get to share the code between instances. My question is: how do I make this code more efficient? For example, if I was making thousands of cat objects, what is the best way to modify this pattern to take advantage of the prototype object?

    Read the article

  • Automated UAT/functional tests on Swing applications without source code

    - by jas
    Our team is now working on a big Swing application. Our job basically focuses on writing extensions to the existing framework. A typical job would be adding a new panel/ or adding a new tab with some extra functionalities that suit our need. It seems FEST can help a lot in terms of unit-test our code. I am going to try it out this week. But the question here is if there is a way to do automated functional testing on the whole application. In another word, we do not only need to test our code but also the framework. After all, UAT is the most important part. I am currently considering decompiling the jar files we got into source code then we can identify the components and then use FEST. So, before I get started to give this approach a shot, I think I just ask for ideas and inspirations here. There must be people who have done similar things before. Would be nice if I could learn from the veterans who fought against this before . Thanks,

    Read the article

  • Finding the shortest path between two points on a grid, using Haskell.

    - by esperantist
    This is a problem that I can easily enough solve in a non-functional manner. But solving it in Haskell is giving me big problems. Me being inexperienced when it comes to functional programming is surely a reason. The problem: I have a 2D field divided into rectangles of equal size. A simple grid. Some rectangles are empty space (and can be passed through) while others are impassable. Given a starting rectangle A and a destination rectangle B, how would I calculate the shortest path between the two? Movement is possible only vertically and horizontally, in steps a single rectangle large. How would I go about accomplishing this in Haskell? Code snippets certainly welcome, but also certainly not neccessary. And links to further resources also very welcome! Thanks!

    Read the article

  • Challenge: Neater way of currying or partially applying C#4's string.Join

    - by Damian Powell
    Background I recently read that .NET 4's System.String class has a new overload of the Join method. This new overload takes a separator, and an IEnumerable<T> which allows arbitrary collections to be joined into a single string without the need to convert to an intermediate string array. Cool! That means I can now do this: var evenNums = Enumerable.Range(1, 100) .Where(i => i%2 == 0); var list = string.Join(",",evenNums); ...instead of this: var evenNums = Enumerable.Range(1, 100) .Where(i => i%2 == 0) .Select(i => i.ToString()) .ToArray(); var list = string.Join(",", evenNums); ...thus saving on a conversion of every item to a string, and then the allocation of an array. The Problem However, being a fan of the functional style of programming in general, and method chaining in C# in particular, I would prefer to be able to write something like this: var list = Enumerable.Range(1, 100) .Where(i => i%2 == 0) .string.Join(","); This is not legal C# though. The closest I've managed to get is this: var list = Enumerable.Range(1, 100) .Where(i => i%2 == 0) .ApplyTo( Functional.Curry<string, IEnumerable<object>, string> (string.Join)(",") ); ...using the following extension methods: public static class Functional { public static TRslt ApplyTo<TArg, TRslt>(this TArg arg, Func<TArg, TRslt> func) { return func(arg); } public static Func<T1, Func<T2, TResult>> Curry<T1, T2, TResult>(this Func<T1, T2, TResult> func) { Func<Func<T1, T2, TResult>, Func<T1, Func<T2, TResult>>> curried = f => x => y => f(x, y); return curried(func); } } This is quite verbose, requires explicit definition of the parameters and return type of the string.Join overload I want to use, and relies upon C#4's variance features because we are defining one of the arguments as IEnumerable rather than IEnumerable. The Challenge Can you find a neater way of achieving this using the method-chaining style of programming?

    Read the article

  • Is OO design's strength in semantics or encapsulation?

    - by Phil H
    Object-oriented design (OOD) combines data and its methods. This, as far as I can see, achieves two great things: it provides encapsulation (so I don't care what data there is, only how I get values I want) and semantics (it relates the data together with names, and its methods consistently use the data as originally intended). So where does OOD's strength lie? In constrast, functional programming attributes the richness to the verbs rather than the nouns, and so both encapsulation and semantics are provided by the methods rather than the data structures. I work with a system that is on the functional end of the spectrum, and continually long for the semantics and encapsulation of OO. But I can see that OO's encapsulation can be a barrier to flexible extension of an object. So at the moment, I can see the semantics as a greater strength. Or is encapsulation the key to all worthwhile code?

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 9 10 11 12 13 14 15 16 17 18 19 20  | Next Page >