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Search found 91 results on 4 pages for 'zubair'.

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• How can I implement a list over an eventually consistent database?

  - by Zubair

  I want to implement lists and queues over Cassandra, Riak, or any other eventually consistent store. Is this possible and how could I do it?

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• Which is more suitable on Windows, git or mercurial?

  - by Zubair

  I actually use a combination of OS X, Linux and Windows, but Windows is the most important.

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• Resultset To List

  - by Gnaniyar Zubair

  I want to convert my Resultset to List in my JSP page. and want to display all the values. This is my query: SELECT userId, userName FROM user; I have executed that using preparedstatement and got the Resultset. But how to convert it as a List and want to display the result like this: userID userName ------------------ 1001 user-X 1006 user-Y 1007 user-Z

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• Is there an efficient way to query a document database?

  - by Zubair

  Since document databases store records in tree like structures the fields will never be at set positions. Does this make querying a document database inefficient, or would indexes just be used as with a normal relational database?

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• Can't import clojure records

  - by Zubair

  I have created a record like this: (defrecord User [user-id email]) :but when I try to access it from another name-space I get the error: (User. "name" "email") java.lang.IllegalArgumentException: Unable to resolve classname: User It works when I do: (oe.model.modelcore.User. "name" "email") : I know I will need to import the Java class, but is there any way for clojure to do this automatically when I do: (use 'oe.model.modelcore :reload)

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• Network bandwidth bottleneck for sorting of mapreduce intermediate keys?

  - by Zubair

  I have been learning the mapreduce algorithm and how it can potentially scale to millions of machines, but I don't understand how the sorting of the intermediate keys after the map phase can scale, as there will be: 1,000,000 x 1,000,000 : potential machines communicating small key / value pairs of the intermediate results with each other? Isn't this a bottleneck?

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• How can I start a web browser and open a certain web page from Erlang on Windows in IE?

  - by Zubair

  I have an erlang program which runs a server on a local machine and I would like it to start a local web browser and point to itself on startup. How can I do this in a portable way across Windows XP. Vista, and Windows 7?

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• What is the most efficient way to perform a range query over a cluster of nodes?

  - by Zubair

  What is the most efficient way to perform a range query over a cluster of nodes where I want the result sets merged?

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• Returning an error code in Erlang

  - by Zubair

  I'm writing some Erlang code and I'm very unsure whether I should let everything fail fast. One problem I find with fail fast is that for the developer/user the exception generated is pretty meaningless. Any idea what I should return which would not give esoteric and hard to read stack traces?

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• Is there a version of Emacs thats runs exactly the same on OSX, Windows and Linux?

  - by Zubair

  I'm using Emacs on different environments and unsure of which version to use so that they all behave the same as I hear there are differences between XEamcs, Emacs, and some other versions. Which should I use?

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• Is Pseudo typing in Erlang the way to get types?

  - by Zubair

  For example, to denote a String I could use: {string,"hjggjhhggJ"} and a list would be: {list, [1,2,3]} : I guess I have found that I am running into situations where I need types, for example to distinguish between strings and lists and I am not sure how to proceed. I do however want to use whatever technique I choose everywhere in my Erlang application for consistency, and not just for strings and lists. Any advice?

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• Against the use of "if" statments. Is there always a "clean" alternative?

  - by Zubair

  I have recently seen alot of activity saying that "if" statements should be banned. However in some of the alternatives people are just doing an "if" statement but discussed as a "case" statement, or as an overloaded function in pattern matching languages. Is it really such a clean solution to replace a well understood concept with a more obscure one?

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• Can can I call a function in the same Erlang Parameterised module?

  - by Zubair

  I have a paramterised module in Erlang in which I wish to call a function A from within function B of the same parameterised module. How can I do this?

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• Determining if an item is a string or a list in Erlang

  - by Zubair

  I am writing a program that can have either a list or a string as an argument. How can I tell the difference between a string and a list programmatically in Erlang. Something like: print(List) -> list; print(String) -> string.

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• how to read the contents of a file In Erlang ?

  - by Zubair

  I know you can do something like this: readlines(FileName) -> {ok, Device} = file:open(FileName, [read]), get_all_lines(Device, []). get_all_lines(Device, Accum) -> case io:get_line(Device, "") of eof -> file:close(Device), Accum; Line -> get_all_lines(Device, Accum ++ [Line]) end. : Is there a one liner BIF that can do this too?

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• Are the final results of a map-reduce operation indexed?

  - by Zubair

  I'm trying to find out how I can iterate over the final results of a map reduce operation, so I guess there must be some sort of index into the map reduce results?

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