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• Spring HibernateTemplate: how it deals with transactions?

  - by EugeneP

  Could you explain, what happens behind the scene? Transaction management when using this template in Spring is absolutely unclear. What if I invoke 10 DAO methods that all use the same Hibernatetemplate and I invoke them one after another? Every method runs within its own transaction? It's not effective is not it?

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• Converting Numeric String into Perl's Processable Number

  - by neversaint

  I have a file that contain list of numbers that looks like this: 10^-92 2 10^-14 10^-105 3 10^-20 To explain a bit further 10^-92 is essentially 1E-92 and 2 10^-14 is 2E^-14. Is there a compact way to convert the number in above file into Perl number? At the end I want to sort these number numerically.

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• Chained Hash Tables vs. Open-Addressed Hash Tables

  - by nomemory

  Can somebody explain the main differences between (advantages / disadvantages) the two implementations? For a library, what implementation is recommended?

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• using htmlpurifier for input or output escaping/filtering

  - by user214545

  I am processing a user input from the public with a javascript WYSIWYG editor and I'm planning on using htmlpurifier to cleanse the text. I thought it would be enough to use htmlpurifier on the input, stored the cleaned input in the database,and then output it without further escaping/filtering. But I've heard other opinions that you should always escape the output. Can someone explain why I should need to cleans the output if I'm already cleaning the input?

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• what architecture to use with asp.net mvc vd web forms

  - by kacalapy

  please explain how to get high capacity architectures with both the default asp.net web forms and mvc models with regard to being able to serve millions of page views. i want to know how to set up each model from DB clustering, to caching, logical/ physical tiers, load balancing iis servers, scaling out or up, session state management and so on... is one more scalable than the other? thanks all.

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• Editable table view cell

  - by Koning Baard XIV

  I am creating an application. I have to implement a bookmark feature, and adding one should be similar to this: I want editable UITableViewCells for text input. I was wondering if there is an easier way then embedding a UITextField into a UITableViewCell. And if not, can someone explain how I can use the UITextField inside it? Thanks

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• ps -ef + fourfield from ps -ef output

  - by yael

  I need explain about the four field (4 or 0 ) of ps -ef command , what the meaning of this number THX yael root 27116 27112 4 15:25 pts/0 00:00:00 grep -qsRw -m1 monitohhhhhhhr /var root 29017 27113 0 15:25 pts/0 00:00:00 grep qsRw -m1

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• Difference between the List and Enumeration

  - by harigm

  I have a written a method to get all the records and return in the List Type, but I got out of memory error. So I changed return type from List to Enumeration, in the method, instead of ArrayList, uses Vector and return vector.elements at the end of the method. It works without any error. but I did not understand why. Could someone explain Why this Enumeration worked?

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• why does perl complain "Use of implicit split to @_ is deprecated"

  - by Haiyuan Zhang

  the code triger the complain is as below : #!/usr/bin/perl use strict; use warnings; my $s = "aaa bbb"; my $num_of_item = split(/\s+/, $) ; print $num_of_item; when I run the code, perl complains that "Use of implicit split to @_ is deprecated" . I really have no "context" for the problem, so expect you help to explain what's wrong with the code.

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• What is a database file system?

  - by Ravi

  I have a very little idea about what database file system is. Can somebody out here explain to me what actually a database file system is, and what its applications are? How is it different from a conventional file system? How I can build it?

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• Javascript - .toJSON

  - by BhejaFry

  Hi folks, i am newbie to JSON & hence i am not sure what $.toJSON(params) means? Please explain what this does? TIA

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• Lambda Expressions

  - by Asad Khan

  Can somebody explain me lambda expressions & what they can be used for. I have googled for it & have a rough idea. most of the examples give c# code. How about lambda expressions in plain old C...?

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• How to Render Partial View into an Object

  - by DaveDev

  Hi all, I have the following code: public ActionResult SomeAction() { return new JsonpResult { Data = new { Widget = "some partial html for the widget" } }; } I'd like to modify it so that I could have public ActionResult SomeAction() { // will render HTML that I can pass to the JSONP result to return. var partial = RenderPartial(viewModel); return new JsonpResult { Data = new { Widget = partial } }; } is this possible? Could somebody explain how?

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• class, dict, self, init, args ?

  - by kame

  class attrdict(dict): def __init__(self, *args, **kwargs): dict.__init__(self, *args, **kwargs) self.__dict__ = self a = attrdict(x=1, y=2) print a.x, a.y b = attrdict() b.x, b.y = 1, 2 print b.x, b.y Could somebody explain the first four lines in words? I read about classes and methods. But here it seems very confusing.

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• polynomial multiplication using fastfourier transform

  - by mawia

  i am going through the above topic from CLRS(CORMEN) (page 834) and I got stuck at this point. Can anybody please explain how the following expression, A(x)=A^{[0]}(x^2) +xA^{[1]}(x^2) follows from, n-1 ` S a_j x^j j=0 Where, A^{[0]} = a_0 + a_2x + a_4a^x ... a_{n-2}x^{\frac{n}{2-1}} A^{[1]} = a_1 + a_3x + a_5a^x ... a_{n-1}x^{\frac{n}{2-1}} WITH REGARDS THANKS

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• Difference between message-oriented protocols and stream-oriented protocols

  - by bala1486

  I am trying to understand the difference between these two computer networking terminologies. I searched over the internet but coudn't get a good idea. Could anybody please explain me or give a link to a page that explains this? Thank you...

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• Google search results: How to find the minimum window that contains all the search keywords?

  - by Algorist

  Hi, I was wondering what the complexity of the algorithm is that is used to find the smallest snippet that contains all the search key words. Please explain the complexity, if non-trivial. Thanks Bala

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• Comparsion between Pixel Bender(in Flash) and Pixel Shaders(in Silverlight)

  - by Andy Li

  Can someone explain the different between Pixel Bender in Flash and Pixel Shader(HLSL) in Silverlight in terms of programming flexibility and run-time performance?

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• What about the using construct in c#

  - by Joshua

  I see this: using (StreamWriter sw = new StreamWriter("file.txt")) { // d0 w0rk s0n } Everything I try to find info on is does not explain what this doing, and instead gives me stuff about namespaces.

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• Is priority queue a non-linear data structure?

  - by Maxood

  If yes then why priority queue is a non-linear data structure? Does non-linear data sturctures are bad in performance as compared to linear ones? If yes then why? Please explain in detail.

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• A question about logic and Curry-Howard correspondence.

  - by Bubba88

  Hi. Could you please explain me what is the basic connection between the fundamentals of logical programming and the phenomenum of syntatic similarity between type systems and conventional logic?

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• In inno setup how to set the unins000.exe with product name, product version and copyrights properti

  - by Sriganesh S

  I have created an installer using inno setup. Everything works fine but after installation unins000.exe will be generated, this exe doesn't have product name, product version and copyrights properties set. Can any one explain me how to build the installer so that unins000.exe will contain these fields.

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• Rhini Mocks - Difference between GenerateStub<T> & GenerateMock<T>

  - by chugh97

  Can any of the Rhino experts explain me by giving a suitable example of the differnce between the above methods on the MockRepository class (Rhino Mocks framework).Where should one use Stub over Mock method or otherwise?

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• Javascript parse/evaluation order?

  - by Breck Fresen

  This is probably a nub question, but I don't understand why this works: <script type="text/javascript"> alert(foo); function foo() { } </script> This alerts "function foo() { }", but I expected the alert to be evaluated before the function foo was defined. Can someone explain what I don't understand about parse/evaluation order or point me to a resource that does? Thanks in advance, -- Breck

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• Wikipedia embedded in WinForms App Tutorial

  - by RHaguiuda

  Can anyone post a tutorial here on how to show a Wikipedia article in a .NET WinForms application (C# or VB)? If the article can be placed in a string it suffices, there`s no need to put it on any control. I found some information on Wikipedia's API. After reading it, I added the reference to web service but can`t find a way to make this work. And if it's possible, explain how images are downloaded from wiki (link or image itself).

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