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  • Parallel computation of the median of a large array

    - by recipriversexclusion
    I got asked this question once and still haven't been able to figure it out: You have an array of N integers, where N is large, say, a billion. You want to calculate the median value of this array. Assume you have m+1 machines (m workers, one master) to distribute the job to. How would you go about doing this? Since the median is a nonlinear operator, you can't just find the median in each machine and then take the median of those values.

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  • how to distinct one column when using inner join

    - by kusha
    i am using two table postjob and job location want to distinct jobtitle The query is: select postjob.jobtitle, postjob.industry, postjob.companyname, postjob.jobdescription, postjob.postid, postjob.PostingDate, Job_Location.Location, Job_Location.PostigID from postjob inner join Job_Location on postjob.postid = Job_Location.PostigID Where postjob.industry=' Marketing, Advertising' output of this query http://www.justlocaldial.com/Industry_search.aspx?ind=Marketing,%20Advertising

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  • Console output spits out Chinese(?) characters

    - by a_person
    This is a real shot in the dark, however maybe someone had a similar issue. Some console apps are being invoked by either SQL Server 2008, or Autosys (job schedule) under Windows Server 2008; output results of execution are being saved into .txt files. Every so often, with no definite pattern as far as I can tell saved output is displayed as a series of what I presume are Chinese characters. Have anyone encountered phenomenon above?

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  • Mandatory method documentation

    - by Sjoerd
    On my previous job, providing all methods with javadoc was mandatory, which resulted in things like this: /** * Sets the Frobber. * * @param frobber The frobber */ public setFrobber(Frobber frobber) { ... } As you can see, the documentation adds little to the code, but takes up space and work. Should documenting all methods be mandatory or optional? Is there a rule for which methods to document? What are pros and cons of requiring every method to be documented?

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  • Best practices for handling binary data in Ruby?

    - by StackedCrooked
    What are the best practices for reading and writing binary data in Ruby? In the code sample below I needed to send a binary file using over HTTP (as POST data): f = File.new("resp.der", "r") # binary file begin while true out.syswrite(f.sysread(1)) # out is an output stream (type IO) end rescue EOFError => err puts "Sent response." end While this code seems to do a good job, it probably isn't very idiomatic. How can I improve it?

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  • How did you choose a technology to specialize in

    - by Tomh
    I know it is kind of subjective, but as I've seen questions around like "How did you land your first job" etc. I thought it might be suitable. With so many technologies coming out these days and employers asking for specialists in those (no one is looking for generalists), I'm wondering how people here managed to pick one technology (or area) and focus on that. If this question is not suitable here, then where can I ask?

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  • What is a good free ODBC viewer?

    - by wshato
    At my job I have to work with three different databases. One is a SQL Server 2008, for which I use SQL Server Management Studio, and another is MySQL, for which I use the MySQL tools. The third however is a Cache database that I can only access through a ODBC connection. Currently I use the SLIK software ODBC View tool to access it, but it is severely lacking when compared with the other two tools. Can anyone recommend a good tool for this type of work?

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  • where should I do the calculating stuff,PHP or Mysql?

    - by SpawnCxy
    I've been doing a lot of calculating stuff nowadays.Usually I prefer to do this job in PHP rather than Mysql though I know PHP is not good at this cuz I thought mysql may be worse.But I found some performance problem :some pages were loaded so slowly that 30 seconds' timelimit is not enough for them!So I wonder which is the better practice to do the calculations,and any princles for that?Suggestions would be appreciated.

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  • Date based publishing ASP.NET MVC

    - by kayluhb
    I am building a custom CMS in ASP.NET MVC and one of the requirements is that the content has a start and end date that dictates whether or not the page appears on the site. What is the best approach to this? Should I run some sort of chron job to mark the status of the page according to its publish dates? Does anyone have any resources or advice on the matter?

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  • How to create combobox with bitmaps

    - by Morpheus
    Hi ! I wanted to create a custom combo box like this (as in MS Word), Are there any Win32 API calls to get this job done, (like ChooseColor() or ChooseFont()? If there aren't any, can anyone please tell me how to do this? Thanks you. Regards,

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  • Quitting application in Android

    - by Danail
    I want to quit application in Android. Just put a "quit" button, which kills my app. I know I shouldn't do this. I know that this is not the philosophy of the OS. If you know how it can be done, pls share. In the app, I have many opened activities, so "finish()" will not do the job. Thank you for your information in advance. Danail

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  • Is it better to create methods with a long list of parameters or wrap the parameters into an object?

    - by GigaPr
    Hi, Is it better(what is the best practice) to create methods with a long list of parameters or wrap the parameters into an object? I mean lets say i have a Client data type with a long list of properties and i want to update all the properties at once. is it better to do something like public int Update(int id, string name, string surname, string streetAddress, string streetAddress2, string postcode, string town, string city, string nationality, string age, string gender,string job){ } or wrap all the properties in a object and do something like public int Update(Client client){} thanks

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  • Calculating average (AVG) and grouping by week on large data set takes too long

    - by caioiglesias
    I'm getting average prices by week on 7 million rows, it's taking around 30 seconds to get the job done. This is the simple query: SELECT AVG(price) as price, yearWEEK(FROM_UNIXTIME(timelog)) as week from pricehistory where timelog > $range and product_id = $id GROUP BY week The only week that actually gets data changed and is worth averaging every time is always the last one, so this calculation for the whole period is a waste of resources. I just wanted to know if mysql has a tool to help out on this.

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  • Creating our own APIs

    - by Markii
    We need a bunch of APIs for our service and are looking at the job as being quite tedious for starting from scratch because we need strict user restrictions such as max queries and usage statistics. Are there any pre-made services or scripts for this already?

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  • Migrating from C# to C++

    - by Anupam Mehra
    My new job needs me to migrate from C# to C++. I am comfortable with C# and have an exposure to C++ at college (basics). What would be the best way to go forward. Please suggest some materials or books to go forward.

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  • PHP Priority Queue Implementation

    - by Zahymaka
    I just finished coding a complex job assignment application where a lot of the work was done using priority queues. When I deployed, however, I discovered the web server ran PHP 5.2. Has there been an implementation for PHP<5.3 that can server as a drop-in replacement for SPLPriorityQueue?

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  • Why is there no middleware in Erlang?

    - by Zubair
    I asked a question earlier about ESBs written in Erlang or Java, and there didn't seem to be anything in Erlang, and only products in Java. http://stackoverflow.com/questions/2453641/what-would-be-the-best-language-in-which-to-write-an-esb/2453683#2453683 I guess I find it difficult to understand why a language like Erlang has no such middleware products, especially seeing as it should be ideally suited to the job.

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  • How to determine whether a linked list contains a loop?

    - by ET
    During a preparation for a job interview, I encountered the following question: How can you determine whether a linked list (of any type) contains a loop, using additional space complexity of O(1)? You cannot assume that the loop starts at the first node (and of course, the loop doesn't have to contain all nodes). I couldn't find the answer, though I have the feeling it's quite simple...

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