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  • Why is my keyboard messed up in Eclipse?

    - by Xi
    Hi there: I am trying to type in a pair of angle brackets in Eclipse, like "<". However it shows up as a single quotation and a dot, like "'.". I tried a couple of times and found out that the angle bracket is actually located at back-slash's position. Why is this happening? How can I change it back? Thanks in advance. Xi

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  • Practical examples of using symbols in Scala?

    - by Jesper
    Scala has symbols - names that start with a single quote ' and which are a kind of string constants. I know symbols from Ruby (where they start with a colon). In Ruby they are used for some meta-programming tasks, like generating getters and setters for member variables (for example attr_reader :name to generate a getter for name). I haven't seen a lot of use of symbols in Scala code yet. What are practical uses for symbols in Scala?

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  • hexdump confusion

    - by zedoo
    I am playing with the unix hexdump utility. My input file is UTF-8 encoded, containing a single character ñ, which is C3 B1 in hexadecimal UTF-8. hexdump test.txt 0000000 b1c3 0000002 Huh? This shows B1 C3 - the inverse of what I expected! Can someone explain? For getting the expected output I do: hexdump -C test.txt 00000000 c3 b1 |..| 00000002 I was thinking I understand encoding systems..

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  • Creating a handle to a class' property

    - by shadeMe
    Would it be possible to create a handle ( or a tracking handle ) to a class' property ? For instance, System::Windows::Forms::CheckBox^ Box = gcnew System::Windows::Forms::CheckBox() I'd like to create a handle to its Checked property and use it to access and modify the same.

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  • Crate datasource for mysql to different machine in glassfish

    - by Dickson
    I'm using glassfish(v2.11) as my application server and I have another machine for mysql database server. Currently I want to separate the app server and db server, so I create a jdbc datasource to point to mysql server, but it doesn't works as expect, by the way, when I create datasource to point to local machine (glassfish app server and mysql db server in single machine), and It works well. Is there any configuration I need to care of when pointing datasource to different machine which I use to host my database (MySQL 5.1)?

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  • SQL Server: How to iterate over function arguments

    - by atricapilla
    I'm trying to learn SQL and for demonstration purposes I would like to create a loop which iterates over function arguments. E.g. I would like to iterate over SERVERPROPERTY function arguments (propertynames). I can do single select like this: SELECT SERVERPROPERTY('ProductVersion') AS ProductVersion, SERVERPROPERTY('ProductLevel') AS ProductLevel, SERVERPROPERTY('Edition') AS Edition, SERVERPROPERTY('EngineEdition') AS EngineEdition; GO but how to iterate over all these propertynames? Thanks in advance.

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  • Question on First Order Logic formula

    - by none
    Hi, Can someone validate the following. I am supposed to 'write a formula asserting that for every number there's a unique next number...true for integers for instance' L(x,y) means x is smaller than y the intended Domain is the Integer numbers Can I give ∀x ∀y [ x<y ⇒ ( ∃z : z<x ∨ y<z ) ] Thanks

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  • Oracle DB on solaris utilizing swap memory when free RAM available

    - by Ara
    Hi, We have a weird instance where we noticed our oracle database server swap utilization was 100% and surprised to see that the system had free memory available during that period. To my knowledge, swap memory utilization starts once system runs out of free RAM (please correct me if i'm wrong). Not sure what could have caused this unusual activity. Had anyone else experienced such behaviour? Regs,

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  • drop down box php

    - by DAFFODIL
    I have stored 6 records in mysql db,when i use this code each of the 6 records getting displayed in seprate drop down box,i want them to be displayed in a single drop down box.Where am i going wrong? Any help ii be appreciated. Thnx in advance. http://dpaste.com/hold/180077/

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  • Why are my rails tests so slow?

    - by ryeguy
    Is it normal for my test suite to take 5 seconds just to launch? Even when running an empty suite it still takes this long. Is it because it's firing up a new instance of rails on each run? If so, is there anyway to keep it persistent? I'm using Test::Unit with Shoulda.

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  • Make Desktop Application Web Interfaceable

    - by brian28
    Is there a way to make a desktop application easily interfaceable via Web ? Meaning, can you have a way to interface with a single desktop application as if you were remote desktop'd into the machine but not? I am looking at doing this in ASP.NET or Silverlight.

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  • Is opening too many datacontexts bad?

    - by ryudice
    I've been checking my application with linq 2 sql profiler, and I noticed that it opens a lot of datacontexts, most of them are opened by the linq datasource I used, since my repositories use only the instance stored in Request.Items, is it bad to open too many datacontext? and how can I make my linqdatasource to use the datacontext that I store in Request.Items for the duration of the request? thanks for any help!

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  • Zend_Db_Table - Update don't work

    - by poru
    The code seems not working. // $counter is an instance of Zend_Db_Table_Abstract $counter->update(array('hits' => 'hits+1'), '"id" = 1'); I took a look into the DB profiler and find the following query: UPDATE `downloads` SET `hits` = ? WHERE ("id" = 1)

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  • Postgresql performance on EC2/EBS

    - by matija
    What gives best performance for running PostgreSQL on EC2? EBS in RAID? PGData on /mnt? Do you have any preferences or experiences? Main "plus" for running pgsql on EBS is switching from one to another instances. Can this be the reason to be slower that /mnt partition? PS. im running postgresql 8.4 with datas/size about 50G, amazon ec2 xlarge(64) instance.

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  • How to tar multiple files in perl

    - by kpraveenreddy
    How can I tar multiple directories and also append files with some pattern like '.txt' and exclude some directories and exclude some patterns like '.exe' all into a single tar file. The main point is the number of directories are unknown(dynamic), so I need to loop through..I guess?

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  • How can I integrate Java with .Net?

    - by Luke
    I have one SDK that is available in Java and another SDK that is available for .Net and would like to write a single application that interfaces with both of them. I imagine I will need to use a cross platform communication framework that can support named pipes (or other in memory communication), what is the best choice? After some more research I found Hessian -- does anyone know anything about the maturity of this project?

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  • More then one emacs terminal

    - by Mad Wombat
    I am getting more and more used to doing everything from inside emacs, but it seems that eshell, shell and term will only run one instance each. Is there a way to run multiple terminals (preferably term) inside emacs?

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  • How to keep alive an HttpModule (a.k.a register it as a singleton)

    - by Micah
    I pretty sure I've seen this somewhere but I can't seem to find it anywhere. I have an HttpModule that can be used across multiple requests. In other words instead of creating a new instance of the Module on every request it only ever needs to create it once. Does this ring a bell to anyone? If so, what's the method for configuring to work this way?

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  • How do you efficiently generate a list of K non-repeating integers between 0 and an upper bound N

    - by tucuxi
    The question gives all necessary data: what is an efficient algorithm to generate a sequence of K non-repeating integers within a given interval. The trivial algorithm (generating random numbers and, before adding them to the sequence, looking them up to see if they were already there) is very expensive if K is large and near enough to N. The algorithm provided here seems more complicated than necessary, and requires some implementation. I've just found another algorithm that seems to do the job fine, as long as you know all the relevant parameters, in a single pass.

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  • How does a GUI Framework work?

    - by AlexW.H.B.
    I have been all over the web looking for an answer to this, and my question is this: How does a GUI framework work? for instance how does Qt work, is there any books or wibsites on the topic of writing a GUI framework from scratch? and also does the framework have to call methods from the operating systems GUI framework? -- Thank you to any one who takes the time to try to answer this question, and forgive me if i misspelled anything.

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  • Using open source SNES emulator code to turn a rom file into a self-contained executable game

    - by Baron von Monkeydorf
    Would it be possible to take the source code from a SNES emulator (or any other game system emulator for that matter) and a game ROM for the system, and somehow create a single self-contained executable that lets you play that particular ROM without needing either the individual rom or the emulator itself to play? Would it be difficult, assuming you've already got the rom and the emulator source code to work with?

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